Alternatives to Kotlin

Compare Kotlin alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to Kotlin in 2024. Compare features, ratings, user reviews, pricing, and more from Kotlin competitors and alternatives in order to make an informed decision for your business.

  • 1
    Carbon Language
    Carbon Language: An experimental successor to C++. Performance matching C++ using LLVM, with low-level access to bits and addresses. Interoperate with your existing C++ code, from inheritance to templates. Fast and scalable builds that work with your existing C++ build systems. Solid language foundations that are easy to learn, especially if you have used C++. Easy, tool-based upgrades between Carbon versions. Safer fundamentals, and an incremental path towards a memory-safe subset. Carbon is fundamentally a successor language approach, rather than an attempt to incrementally evolve C++. It is designed around interoperability with C++ as well as large-scale adoption and migration for existing C++ codebases and developers.
    Starting Price: Free
  • 2
    Dart

    Dart

    Dart Language

    Mature and complete async-await for user interfaces containing event-driven code, paired with isolate-based concurrency. A programming language optimized for building user interfaces with features such as sound null safety, the spread operator for expanding collections, and collection if for customizing UI for each platform. Write code using a flexible type system with rich static analysis and powerful, configurable tooling. Target the web with complete, mature, fast compilers for JavaScript. Run backend code supporting your app, written using a single programming language. This collection is not exhaustive—it’s just a brief introduction to the language for people who like to learn by example. You might also want to check out the language and library tours, or the Dart cheatsheet codelab.
  • 3
    Java

    Java

    Oracle

    The Java™ Programming Language is a general-purpose, concurrent, strongly typed, class-based object-oriented language. It is normally compiled to the bytecode instruction set and binary format defined in the Java Virtual Machine Specification. In the Java programming language, all source code is first written in plain text files ending with the .java extension. Those source files are then compiled into .class files by the javac compiler. A .class file does not contain code that is native to your processor; it instead contains bytecodes — the machine language of the Java Virtual Machine1 (Java VM). The java launcher tool then runs your application with an instance of the Java Virtual Machine.
    Starting Price: Free
  • 4
    Jetpack Compose
    Jetpack Compose is Android’s recommended modern toolkit for building native UI. It simplifies and accelerates UI development on Android. Quickly bring your app to life with less code, powerful tools, and intuitive Kotlin APIs.
    Starting Price: Free
  • 5
    Delphi

    Delphi

    Embarcadero

    Delphi is the ultimate IDE for creating cross-platform, natively compiled apps. Are you ready to design the best UIs of your life? Our award winning VCL framework for Windows and FireMonkey (FMX) visual framework for cross-platform UIs provide you with the foundation for intuitive, beautiful user interfaces that wow on every platform: Windows, macOS, iOS, and Android. Design your master UI layout once, then easily customize platform- and device-specific views without duplication of design effort. Drag-and-drop visual and non-visual components from the palette using our visual designer. Visually connect user interface elements to data sources using the LiveBindings Designer. Real-time design validation using Live On-Device Preview to broadcast the active form to multiple devices simultaneously. Add responsive design with resolution-aware components for desktop, tablets, and smartphones. Real, platform-specific native controls for an improved user experience.
  • 6
    Vala

    Vala

    The GNOME Project

    Vala is a programming language using modern high level abstractions without imposing additional runtime requirements and without using a different ABI compared to applications and libraries written in C. Vala uses the GObject type system and has additional code generation routines that make targeting the GNOME stack simple. Vala has many other uses where native binaries are required. More. There is GNOME Discourse for developer and general discussions. You can also join the Vala Matrix channel for asking questions and talking with the developers. Vala is a cross platform development tool with third party distributions providing binaries for Windows, macOS, Linux, BSDs and other platforms.
    Starting Price: Free
  • 7
    HTML

    HTML

    HTML

    HTML, short for HyperText Markup Language, is the markup language that is used by every website on the internet. HTML is code that websites use to build and structure every part of their website and web pages. HTML5 is a markup language used for structuring and presenting content on the World Wide Web. It is the fifth and final major HTML version that is a World Wide Web Consortium (W3C) recommendation. The current specification is known as the HTML Living Standard. It is maintained by the Web Hypertext Application Technology Working Group (WHATWG), a consortium of the major browser vendors (Apple, Google, Mozilla, and Microsoft). HTML5 includes detailed processing models to encourage more interoperable implementations; it extends, improves, and rationalizes the markup available for documents and introduces markup and application programming interfaces (APIs) for complex web applications. For the same reasons, HTML5 is also a candidate for cross-platform mobile applications.
  • 8
    F#

    F#

    F#

    F# gives you simplicity and succinctness like Python with correctness, robustness and performance beyond C# or Java. F# is open source, cross-platform and free to use with professional tooling. F# is a JavaScript and .NET language for web, cloud, data-science, apps and more. Cloud computing relies on leveraging multiple integrated services. Using multiple services required a unique set of technologies and capabilities, and F# excels in this domain. With the recent rise of cloud solutions, it is becoming increasingly easy to deploy multiple services “in the cloud”, expanding what is possible both by storing large amounts of data and running heavy computations distributed across clusters of machines.
    Starting Price: Free
  • 9
    Synergy DBL

    Synergy DBL

    Synergex

    Synergy DBL is a proven, ANSI-standard business language with class libraries, a high-performance database, and .NET interoperability at the heart of the Synergy/DE product suite. Flexible and reliable, it gives you the power to create scalable, portable enterprise applications and supports both object-oriented and structured programming techniques. Synergy DBL comes in two forms: traditional Synergy DBL and Synergy DBL for .NET. Traditional Synergy DBL supports numerous open technologies (including XML, HTTPS, SSL, and ActiveX) that allow you to interface with third-party applications and data. The multi-pass Synergy DBL compiler supports strong prototyping and other strict error-detection features. Synergy DBL for .NET enables you to create Synergy libraries and applications that run natively in the .NET framework, then extend your applications by taking advantage of .NET Framework libraries and third-party controls and interoperating with applications written in other languages.
    Starting Price: Free
  • 10
    Scala

    Scala

    Scala

    Scala combines object-oriented and functional programming in one concise, high-level language. Scala's static types help avoid bugs in complex applications, and its JVM and JavaScript runtimes let you build high-performance systems with easy access to huge ecosystems of libraries. The Scala compiler is smart about static types. Most of the time, you need not tell it the types of your variables. Instead, its powerful type inference will figure them out for you. In Scala, case classes are used to represent structural data types. They implicitly equip the class with meaningful toString, equals and hashCode methods, as well as the ability to be deconstructed with pattern matching. In Scala, functions are values, and can be defined as anonymous functions with a concise syntax.
    Starting Price: Free
  • 11
    Julia

    Julia

    Julia

    Julia was designed from the beginning for high performance. Julia programs compile to efficient native code for multiple platforms via LLVM. Julia uses multiple dispatch as a paradigm, making it easy to express many object-oriented and functional programming patterns. The talk on the Unreasonable Effectiveness of Multiple Dispatch explains why it works so well. Julia is dynamically typed, feels like a scripting language, and has good support for interactive use. Julia provides asynchronous I/O, metaprogramming, debugging, logging, profiling, a package manager, and more. One can build entire Applications and Microservices in Julia. Julia is an open source project with over 1,000 contributors. It is made available under the MIT license.
    Starting Price: Free
  • 12
    Codename One

    Codename One

    Codename One

    Codename One is an open-source cross-platform mobile app development framework to build native iOS, Android, Desktop & Web apps with a single Java or Kotlin codebase. It compiles Java or Kotlin into native code for iOS, Android, UWP (Universal Windows Platform), and even JavaScript (with seamless PWA and Thread support). It's a complete mobile platform featuring virtual machines, simulator, design tools (visual theme/builder/css), IDE integrations, ports to multiple OS's and much more. It provides full access to the underlying native OS code (e.g. Objective-C, C#, Dalvik/ART) through a portable abstraction which enables 100% code reuse.
  • 13
    Fortran

    Fortran

    Fortran

    Fortran has been designed from the ground up for computationally intensive applications in science and engineering. Mature and battle-tested compilers and libraries allow you to write code that runs close to the metal, fast. Fortran is statically and strongly typed, which allows the compiler to catch many programming errors early on for you. This also allows the compiler to generate efficient binary code. Fortran is a relatively small language that is surprisingly easy to learn and use. Expressing most mathematical and arithmetic operations over large arrays is as simple as writing them as equations on a whiteboard. Fortran is a natively parallel programming language with intuitive array-like syntax to communicate data between CPUs. You can run almost the same code on a single CPU, on a shared-memory multicore system, or on a distributed-memory HPC or cloud-based system.
    Starting Price: Free
  • 14
    Ring

    Ring

    Ring

    The Ring is a practical general-purpose multi-paradigm language. The supported programming paradigms are imperative, procedural, object-oriented, declarative using nested structures, functional, meta programming and natural programming. The language is portable (Windows, Linux, macOS, Android, WebAssembly, etc.) and can be used to create Console, GUI, Web, Games and Mobile applications. The language is designed to be simple, small and flexible. The language is simple, trying to be natural, encourage organization and comes with transparent and visual implementation. It comes with compact syntax and a group of features that enable the programmer to create natural interfaces and declarative domain-specific languages in a fraction of time. It is very small, flexible and comes with smart garbage collector that puts the memory under the programmer control. It supports many programming paradigms, comes with useful and practical libraries.
    Starting Price: Free
  • 15
    PowerShell

    PowerShell

    Microsoft

    PowerShell is a cross-platform task automation and configuration management framework, consisting of a command-line shell and scripting language. Unlike most shells, which accept and return text, PowerShell is built on top of the .NET Common Language Runtime (CLR), and accepts and returns .NET objects. This fundamental change brings entirely new tools and methods for automation. Unlike traditional command-line interfaces, PowerShell cmdlets are designed to deal with objects. An object is structured information that is more than just the string of characters appearing on the screen. Command output always carries extra information that you can use if you need it. If you've used text-processing tools to process data in the past, you'll find that they behave differently when used in PowerShell. In most cases, you don't need text-processing tools to extract specific information. You directly access portions of the data using standard PowerShell object syntax.
  • 16
    WebAssembly

    WebAssembly

    WebAssembly

    WebAssembly (abbreviated Wasm) is a binary instruction format for a stack-based virtual machine. Wasm is designed as a portable compilation target for programming languages, enabling deployment on the web for client and server applications. The Wasm stack machine is designed to be encoded in a size- and load-time-efficient binary format. WebAssembly aims to execute at native speed by taking advantage of common hardware capabilities available on a wide range of platforms. WebAssembly describes a memory-safe, sandboxed execution environment that may even be implemented inside existing JavaScript virtual machines. When embedded in the web, WebAssembly will enforce the same-origin and permissions security policies of the browser. WebAssembly is designed to be pretty-printed in a textual format for debugging, testing, experimenting, optimizing, learning, teaching, and writing programs by hand. The textual format will be used when viewing the source of Wasm modules on the web.
    Starting Price: Free
  • 17
    Pascal

    Pascal

    Pascal

    Pascal is a procedural and imperative programming language. Pascal is a simple and efficient programming language designed for developers that want to build applications in structured ways. Free Pascal is a mature, versatile, open source Pascal compiler. It can target many processor architectures: Intel x86 (16 and 32 bit), AMD64/x86-64, PowerPC, PowerPC64, SPARC, SPARC64, ARM, AArch64, MIPS, Motorola 68k, AVR, and the JVM. Supported operating systems include Windows (16/32/64 bit, CE, and native NT), Linux, Mac OS X/iOS/iPhoneSimulator/Darwin, FreeBSD and other BSD flavors, DOS (16 bit, or 32 bit DPMI), OS/2, AIX, Android, Haiku, Nintendo GBA/DS/Wii, AmigaOS, MorphOS, AROS, Atari TOS, and various embedded platforms. Additionally, support for RISC-V (32/64), Xtensa, and Z80 architectures, and for the LLVM compiler infrastructure is available in the development version. Additionally, the Free Pascal team maintains a transpiler for pascal to Javascript called pas2js.
  • 18
    CoffeeScript

    CoffeeScript

    CoffeeScript

    Underneath that awkward Java-esque patina, JavaScript has always had a gorgeous heart. CoffeeScript is an attempt to expose the good parts of JavaScript in a simple way. The golden rule of CoffeeScript is: “It’s just JavaScript.” The code compiles one-to-one into the equivalent JS, and there is no interpretation at runtime. You can use any existing JavaScript library seamlessly from CoffeeScript (and vice-versa). The compiled output is readable, pretty printed, and tends to run as fast or faster than the equivalent handwritten JavaScript. Most modern JavaScript features that CoffeeScript supports can run natively in Node 7.6+, meaning that Node can run CoffeeScript’s output without any further processing required. This list may be incomplete, and excludes versions of Node that support newer features behind flags; please refer to node.green for full details. You can run the tests in your browser to see what your browser supports.
    Starting Price: Free
  • 19
    OCaml

    OCaml

    OCaml

    OCaml is a general-purpose, industrial-strength programming language with an emphasis on expressiveness and safety. OCaml’s powerful type system means more bugs are caught at compile time, and large, complex codebases are easier to maintain. This makes it a good language for running critical code. At the same time, sophisticated inference makes the type system unobtrusive, creating a smooth developer experience. One is a bytecode compiler which generates small, portable executables and is very fast. The other is a native code compiler that produces more efficient machine code; its performance matches the highest standards of modern compilers. OCaml has great support for the most popular editors. VS Code is recommended for beginners, and for power users there is deep integration with Vim and Emacs. OCaml has a rich and dynamic community and best-in-class tooling.
    Starting Price: Free
  • 20
    Cython

    Cython

    Cython

    Cython is an optimizing static compiler for both the Python programming language and the extended Cython programming language (based on Pyrex). It makes writing C extensions for Python as easy as Python itself. Cython gives you the combined power of Python and C to let you write Python code that calls back and forth from and to C or C++ code natively at any point. Easily tune readable Python code into plain C performance by adding static type declarations, also in Python syntax. Use combined source code level debugging to find bugs in your Python, Cython, and C code. Interact efficiently with large data sets, e.g. using multi-dimensional NumPy arrays. Quickly build your applications within the large, mature, and widely used CPython ecosystem. The Cython language is a superset of the Python language that additionally supports calling C functions and declaring C types on variables and class attributes.
    Starting Price: Free
  • 21
    Go

    Go

    Golang

    With a strong ecosystem of tools and APIs on major cloud providers, it is easier than ever to build services with Go. With popular open source packages and a robust standard library, use Go to create fast and elegant CLIs. With enhanced memory performance and support for several IDEs, Go powers fast and scalable web applications. With fast build times, lean syntax, an automatic formatter and doc generator, Go is built to support both DevOps and SRE. Everything there is to know about Go. Get started on a new project or brush up for your existing Go code. An interactive introduction to Go in three sections. Each section concludes with a few exercises so you can practice what you've learned. The Playground allows anyone with a web browser to write Go code that we immediately compile, link, and run on our servers.
    Starting Price: Free
  • 22
    Python

    Python

    Python

    The core of extensible programming is defining functions. Python allows mandatory and optional arguments, keyword arguments, and even arbitrary argument lists. Whether you're new to programming or an experienced developer, it's easy to learn and use Python. Python can be easy to pick up whether you're a first-time programmer or you're experienced with other languages. The following pages are a useful first step to get on your way to writing programs with Python! The community hosts conferences and meetups to collaborate on code, and much more. Python's documentation will help you along the way, and the mailing lists will keep you in touch. The Python Package Index (PyPI) hosts thousands of third-party modules for Python. Both Python's standard library and the community-contributed modules allow for endless possibilities.
  • 23
    QML
    QML is a declarative language that allows user interfaces to be described in terms of their visual components and how they interact and relate with one another. It is a highly readable language that was designed to enable components to be interconnected in a dynamic manner, and it allows components to be easily reused and customized within a user interface. Using the QtQuick module, designers and developers can easily build fluid animated user interfaces in QML, and have the option of connecting these user interfaces to any back-end C++ libraries. QML is a user interface specification and programming language. It allows developers and designers alike to create highly performant, fluidly animated and visually appealing applications. QML offers a highly readable, declarative, JSON-like syntax with support for imperative JavaScript expressions combined with dynamic property bindings.
    Starting Price: Free
  • 24
    Apache Groovy

    Apache Groovy

    The Apache Software Foundation

    Apache Groovy is a powerful, optionally typed and dynamic language, with static-typing and static compilation capabilities, for the Java platform aimed at improving developer productivity thanks to a concise, familiar and easy to learn syntax. It integrates smoothly with any Java program, and immediately delivers to your application powerful features, including scripting capabilities, Domain-Specific Language authoring, runtime and compile-time meta-programming and functional programming. Concise, readable and expressive syntax, easy to learn for Java developers. Closures, builders, runtime & compile-time meta-programming, functional programming, type inference, and static compilation. Flexible & malleable syntax, advanced integration & customization mechanisms, to integrate readable business rules in your applications. Great for writing concise and maintainable tests, and for all your build and automation tasks.
    Starting Price: Free
  • 25
    ActionScript

    ActionScript

    ActionScript

    The ActionScript® scripting language lets you add complex interactivity, playback control, and data display to your application. You can add ActionScript in the authoring environment by using the Actions panel, Script window, or an external editor. ActionScript follows its own rules of syntax, and reserved keywords, and lets you use variables to store and retrieve information. ActionScript includes a large library of built‑in classes that let you create objects to perform many useful tasks. You do not have to understand every ActionScript element to begin scripting. If you have a clear goal, you can start building scripts with simple actions. ActionScript and JavaScript are both rooted in the ECMA-262 standard, the international standard for the ECMAScript scripting language. For this reason, developers who are familiar with JavaScript can find ActionScript immediately familiar. Animate includes more than one version of ActionScript to meet the needs of different kinds of developers.
  • 26
    IronPython

    IronPython

    IronPython

    IronPython is an open-source implementation of the Python programming language which is tightly integrated with .NET. IronPython can use .NET and Python libraries, and other .NET languages can use Python code just as easily. Experience a more interactive .NET and Python development experience with Python Tools for Visual Studio. IronPython is an excellent addition to .NET, providing Python developers with the power of the .NET. Existing .NET developers can also use IronPython as a fast and expressive scripting language for embedding, testing, or writing a new application from scratch. The CLR is a great platform for creating programming languages, and the DLR makes it all the better for dynamic languages. Also, the .NET (base class library, presentation foundation, etc.) gives developers an amazing amount of functionality and power. IronPython uses Python syntax and standard libraries and so your Python code will need to be updated accordingly.
    Starting Price: Free
  • 27
    C++/CLI

    C++/CLI

    Microsoft

    In Visual Studio 2022, the default target framework for .NET Core projects is 6.0. For .NET Frameworks projects, the default is 4.7.2. The .NET Framework version selector is on the configure your new project page of the create a new project dialog. C++/CLI itself isn't installed by default when you install a Visual Studio C++ workload. To install the component after Visual Studio is installed, open the Visual Studio Installer by selecting the Windows Start menu and searching for visual studio installer. Choose the modify button next to your installed version of Visual Studio. Select the Individual components tab. Scroll down to the compilers, build tools, and runtimes section, and select C++/CLI support for v143 build tools (Latest). Select modify to download the necessary files and update Visual Studio. By using C++/CLI you can create C++ programs that use .NET classes as well as native C++ types. C++/CLI is intended for use in console applications.
    Starting Price: Free
  • 28
    RemObjects Mercury

    RemObjects Mercury

    RemObjects Mercury

    Mercury is an implementation of the BASIC programming language that is fully code-compatible with Microsoft Visual Basic.NET™, but takes it to the next level, and to new horizons. With Mercury, you will be able to build your existing VB.NET projects and leverage your Visual Basic™ language experience to write code for any modern target platform. You can mix Mercury code with any of the other five Elements languages in the same project if you like! The Mercury language will be deeply integrated into our development environments. Develop your projects in our smart yet lightweight IDEs, Water on Windows or Fire on Mac, with project templates, code completion, integrated debugging for all platforms, and many other advanced development features. Of course, Mercury will also integrate into Visual Studio™ 2017, 2019 and 2022. With Elements, all languages are created equal. Even within the same project, you can mix Mercury, C#, Swift, Java, Oxygene and Go.
    Starting Price: $49 per month
  • 29
    Small Basic

    Small Basic

    Small Basic

    Small Basic is the only programming language created especially to help students transition from block-based coding to text-based coding. By teaching the fundamental elements of syntax-based languages in an approachable manner, Small Basic gives students the skills and confidence to tackle more complex programming languages such as Java and C#. You can also build applications for Kinect, Lego Mindstorm, Raspberry Pi, Arduino, Oculus Rift, and more using Small Basic. Small Basic combines a friendly environment with a very simple language and a rich and engaging set of libraries to make your programs and games pop! In a matter of a few lines of code, you will be well on your way to creating your very own game! Share your programs with your friends and let them import your published programs and run them on their computers. Using the Silverlight player, you can even post your games on your own blogs and websites and play them in the browser.
    Starting Price: Free
  • 30
    GAUSS

    GAUSS

    Aptech Systems

    An easy-to-use data analysis and visualization environment based on the powerful, fast and efficient GAUSS Matrix Programming Language. Prototype to production: Embed custom GAUSS analytics directly in enterprise or web-applications. Customizable programs that extend the GAUSS platform in the fields of econometrics, finance, risk analysis, statistics and more. You can code ideas and techniques straight from the latest journals in GAUSS as quickly as you can with a pen and paper. The GAUSS matrix language is the most natural way to bring cutting edge math, statistics and machine learning to life. GAUSS is the product of more than three decades of innovation and refinement of efficient, native code. This combined with our optimizing compiler and modern threading capabilities, allows you to get your answers before the competition.
  • 31
    Zig

    Zig

    Zig Software Foundation

    Zig is a general-purpose programming language and toolchain for maintaining robust, optimal and reusable software. Focus on debugging your application rather than debugging your programming language knowledge. A fresh approach to metaprogramming based on compile-time code execution and lazy evaluation. No hidden control flow. No hidden memory allocations. No preprocessor, no macros. Call any function at compile-time. Manipulate types as values without runtime overhead. Comptime emulates the target architecture. Use Zig as a zero-dependency, drop-in C/C++ compiler that supports cross-compilation out-of-the-box. Leverage zig build to create a consistent development environment across all platforms. Add a Zig compilation unit to C/C++ projects; cross-language LTO is enabled by default.
    Starting Price: Free
  • 32
    DexGuard

    DexGuard

    Guardsquare

    Protecting Android applications and SDKs against reverse engineering and hacking. Android applications and SDKs are easy to decompile using readily available tools. This opens the way for various forms of abuse, including intellectual property theft, credential harvesting, tampering and cloning. DexGuard protects native Android and cross-platform apps and SDKs against reverse engineering and hacking. It hardens apps' code and enables them to defend themselves at runtime. DexGuard is a command-line tool that processes, optimizes and protects Android applications and libraries. It enables you to fully protect your application or SDK without requiring you to share or alter the source code. DexGuard offers built-in support for both native Android (Java, Kotlin) and cross-platform applications (Cordova, Ionic, React Native, Unity). DexGuard’s functionality can be extended with the NDK add-on to process and protect native libraries.
  • 33
    Prolog

    Prolog

    Prolog

    Prolog is a logic programming language associated with artificial intelligence and computational linguistics. Prolog has its roots in first-order logic, a formal logic, and unlike many other programming languages, Prolog is intended primarily as a declarative programming language, the program logic is expressed in terms of relations, represented as facts and rules. A computation is initiated by running a query over these relations. Prolog was one of the first logic programming languages and remains the most popular such language today, with several free and commercial implementations available. The language has been used for theorem proving, expert systems, term rewriting, type systems, and automated planning, as well as its original intended field of use, natural language processing. Modern Prolog environments support the creation of graphical user interfaces, as well as administrative and networked applications.
  • 34
    Elm

    Elm

    Elm

    Elm uses type inference to detect corner cases and give friendly hints. NoRedInk switched to Elm about four years ago, and 300k+ lines later, they still have not had to scramble to fix a confusing runtime exception in production. The compiler guides you safely through your changes, ensuring confidence even through the most widereaching refactorings in unfamiliar codebases. Including your own, six months later. All Elm programs are written in the same pattern, eliminating doubt and lengthy discussions when deciding how to build new projects and making it easy to navigate old or foreign codebases. Elm has its own virtual DOM implementation, designed for simplicity and speed. All values are immutable in Elm, and the benchmarks show that this helps us generate particularly fast JavaScript code.
    Starting Price: Free
  • 35
    TypeScript

    TypeScript

    TypeScript

    TypeScript adds additional syntax to JavaScript to support a tighter integration with your editor. Catch errors early in your editor. TypeScript code converts to JavaScript, which runs anywhere JavaScript runs: In a browser, on Node.js or Deno and in your apps. TypeScript understands JavaScript and uses type inference to give you great tooling without additional code. TypeScript was used by 78% of the 2020 State of JS respondents, with 93% saying they would use it again. The most common kinds of errors that programmers write can be described as type errors: a certain kind of value was used where a different kind of value was expected. This could be due to simple typos, a failure to understand the API surface of a library, incorrect assumptions about runtime behavior, or other errors.
    Starting Price: Free
  • 36
    Rust

    Rust

    Rust

    Rust is blazingly fast and memory-efficient: with no runtime or garbage collector, it can power performance-critical services, run on embedded devices, and easily integrate with other languages. Rust’s rich type system and ownership model guarantee memory-safety and thread-safety — enabling you to eliminate many classes of bugs at compile-time. Rust has great documentation, a friendly compiler with useful error messages, and top-notch tooling — an integrated package manager and build tool, smart multi-editor support with auto-completion and type inspections, an auto-formatter, and more. Whip up a CLI tool quickly with Rust’s robust ecosystem. Rust helps you maintain your app with confidence and distribute it with ease. Use Rust to supercharge your JavaScript, one module at a time. Publish to npm, bundle with webpack, and you’re off to the races.
    Starting Price: Free
  • 37
    LabVIEW
    LabVIEW offers a graphical programming approach that helps you visualize every aspect of your application, including hardware configuration, measurement data, and debugging. This visualization makes it simple to integrate measurement hardware from any vendor, represent complex logic on the diagram, develop data analysis algorithms, and design custom engineering user interfaces. With LabVIEW and NI DAQ hardware, you can build a custom measurement solution to visualize and analyze real-world signals to make data-driven decisions. Using LabVIEW and NI or third-party hardware, you can automate the validation of your product to meet challenging time-to-market and performance requirements. Working with LabVIEW, you can create flexible test applications that control multiple instruments and design user interfaces to optimize your manufacturing test throughput and operational cost. You can build industrial equipment and smart machines faster with LabVIEW.
    Starting Price: $453 per year
  • 38
    ZenScript

    ZenScript

    CraftTweaker

    ZenScript originated from MineTweaker where a simple programming language is needed to allow users without programming knowledge to be able to execute simple commands by following the tutorials for it. Originally MineTweaker had a simple one-line-at-a-time parsed scripting system, but it quickly became clear that it wasn't flexible enough, so a simple parsed language was created. This parsed language worked quite well but was very inefficient as each value was wrapped into its own object. ZenScript allows mixed typed and typeless behavior. You don't need to define types anywhere, the compile will infer them where possible and exhibit typeless behavior when the type is effectively unknown. In nearly all the cases, the type is perfectly known and execution runs at native Java speed. Since there are types, they can be documented and enforced.
    Starting Price: Free
  • 39
    Nim

    Nim

    Nim

    Nim is a statically typed compiled systems programming language. It combines successful concepts from mature languages like Python, Ada and Modula. Nim generates native dependency-free executables, not dependent on a virtual machine, which are small and allow easy redistribution. Nim's memory management is deterministic and customizable with destructors and move semantics, inspired by C++ and Rust. It is well-suited for embedded, hard-realtime systems. Modern concepts like zero-overhead iterators and compile-time evaluation of user-defined functions, in combination with the preference of value-based datatypes allocated on the stack, lead to extremely performant code. Support for various backends: it compiles to C, C++ or JavaScript so that Nim can be used for all backend and frontend needs.
    Starting Price: Free
  • 40
    Clojure

    Clojure

    Clojure

    Clojure is a robust, practical, and fast programming language with a set of useful features that together form a simple, coherent, and powerful tool. Clojure is a dynamic, general-purpose programming language, combining the approachability and interactive development of a scripting language with an efficient and robust infrastructure for multithreaded programming. Clojure is a compiled language, yet remains completely dynamic, every feature supported by Clojure is supported at runtime. Clojure provides easy access to the Java frameworks, with optional type hints and type inference, to ensure that calls to Java can avoid reflection. Clojure is a dialect of Lisp, and shares with Lisp the code-as-data philosophy and a powerful macro system. Clojure is predominantly a functional programming language and features a rich set of immutable, persistent data structures. When a mutable state is needed, Clojure offers a software transactional memory system and reactive Agent system.
    Starting Price: Free
  • 41
    Less

    Less

    Less

    Less (which stands for Leaner Style Sheets) is a backwards-compatible language extension for CSS. This is the official documentation for Less, the language and Less.js, the JavaScript tool that converts your Less styles to CSS styles. Because Less looks just like CSS, learning it is a breeze. Less only makes a few convenient additions to the CSS language, which is one of the reasons it can be learned so quickly. Mixins are a way of including ("mixing in") a bunch of properties from one rule-set into another rule-set. Less gives you the ability to use nesting instead of, or in combination with cascading.
    Starting Price: Free
  • 42
    MoonScript

    MoonScript

    MoonScript

    MoonScript is a dynamic scripting language that compiles into Lua. It gives you the power of one of the fastest scripting languages combined with a rich set of features. MoonScript can either be compiled into Lua and run at a later time, or it can be dynamically compiled and run using the moonloader. Because it compiles right into Lua code, it is completely compatible with alternative Lua implementations like LuaJIT, and it is also compatible with all existing Lua code and libraries. The command line tools also let you run MoonScript directly from the command line, like any first-class scripting language. MoonScript provides a clean syntax using significant whitespace that avoids all the keyword noise typically seen in a Lua script. It also adds table comprehensions, implicit return on functions, classes, inheritance, scope management statements import & export, and a convenient object creation statement called with.
  • 43
    C#

    C#

    Microsoft

    C# (also known as C Sharp, pronounced "See Sharp") is a modern, object-oriented, and type-safe programming language. C# enables developers to build many types of secure and robust applications that run in .NET. C# has its roots in the C family of languages and will be immediately familiar to C, C++, Java, and JavaScript programmers. This tour provides an overview of the major components of the language in C# 8 and earlier. C# is an object-oriented, component-oriented programming language. C# provides language constructs to directly support these concepts, making C# a natural language in which to create and use software components. Since its origin, C# has added features to support new workloads and emerging software design practices. At its core, C# is an object-oriented language. You define types and their behavior.
    Starting Price: Free
  • 44
    Erlang

    Erlang

    Erlang

    Erlang is a programming language used to build massively scalable soft real-time systems with requirements on high availability. Some of its uses are in telecoms, banking, e-commerce, computer telephony and instant messaging. Erlang's runtime system has built-in support for concurrency, distribution and fault tolerance. OTP is set of Erlang libraries and design principles providing middle-ware to develop these systems. It includes its own distributed database, applications to interface towards other languages, debugging and release handling tools.
    Starting Price: Free
  • 45
    LÖVE

    LÖVE

    LÖVE

    As you probably know by now, LÖVE is a framework for making 2D games in the Lua programming language. LÖVE is totally free, and can be used in anything from friendly open-source hobby projects, to evil, closed-source commercial ones. To make a minimal game, create a folder anywhere, and open up your favorite text editor. Sublime Text is a pretty good one for all operating systems, and it has Lua support built in. Create a new file in the folder you just created, and name it main.lua. Put the following code in the file, and save it.
  • 46
    C++

    C++

    C++

    C++ is a simple and clear language in its expressions. It is true that a piece of code written with C++ may be seen by a stranger of programming a bit more cryptic than some other languages due to the intensive use of special characters ({}[]*&!|...), but once one knows the meaning of such characters it can be even more schematic and clear than other languages that rely more on English words. Also, the simplification of the input/output interface of C++ in comparison to C and the incorporation of the standard template library in the language, makes the communication and manipulation of data in a program written in C++ as simple as in other languages, without losing the power it offers. It is a programming model that treats programming from a perspective where each component is considered an object, with its own properties and methods, replacing or complementing structured programming paradigm, where the focus was on procedures and parameters.
    Starting Price: Free
  • 47
    D

    D

    D Language Foundation

    D is a general-purpose programming language with static typing, systems-level access, and C-like syntax. With the D Programming Language, write fast, read fast, and run fast. D is made possible through the hard work and dedication of many volunteers, with the coordination and outreach of the D Language Foundation, a 501(c)(3) non-profit organization. You can help further the development of the D language and help grow our community by supporting the Foundation. Discuss D on the forums, join the IRC channel, read our official Blog, or follow us on Twitter. Browse the wiki, where among other things you can find the high-level vision of the D Language Foundation. Refer to the language specification and the documentation of Phobos, D's standard library. The DMD manual tells you how to use the compiler. Read various articles to deepen your understanding.
    Starting Price: Free
  • 48
    Deno

    Deno

    Deno

    Deno is a simple, modern and secure runtime for JavaScript, TypeScript, and WebAssembly that uses V8 and is built in Rust. Deno comes with a manual which contains more in depth explanations about the more complex functions of the runtime, an introduction to the concepts that Deno is built on, details about the internals of Deno, how to embed Deno in your own application and how to extend Deno using Rust plugins. Next to the Deno runtime, Deno also provides a list of audited standard modules that are reviewed by the Deno maintainers and are guaranteed to work with a specific Deno version. These live in the denoland/deno_std repository.
    Starting Price: Free
  • 49
    Wolfram Language

    Wolfram Language

    Wolfram Language

    We comply with providing the computational paradigm. The Wolfram Language provides access to computing power at a significantly higher level than ever before, leveraging built-in computational intelligence based on a wide variety of algorithms and real-world knowledge, carefully integrated over three decades. The Wolfram Language is scalable for programs both small and large, with out-of-the-box deployment both on-premises and in the cloud. In addition, the Wolfram Language builds on clear principles and an elegant unified symbolic framework to create what is now emerging as the world's most productive programming language, and the first true computational communication language for humans and AI.
    Starting Price: Free
  • 50
    SystemC

    SystemC

    SystemC

    Your online reference for everything related to SystemC, the language for system-level design, high-level synthesis, modeling and verification. SystemC™ addresses the need for a system design and verification language that spans hardware and software. It is a language built in standard C++ by extending the language with the use of class libraries. The language is particularly suited to model system's partitioning, to evaluate and verify the assignment of blocks to either hardware or software implementations, and to architect and measure the interactions between and among functional blocks. Leading companies in the intellectual property (IP), electronic design automation (EDA), semiconductor, electronic systems, and embedded software industries currently use SystemC for architectural exploration, to deliver high-performance hardware blocks at various levels of abstraction and to develop virtual platforms for hardware/software co-design.
    Starting Price: Free