Best Free Application Development Software - Page 11
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Compare the Top Free Application Development Software as of September 2026 - Page 11
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1
Mithril.js
Mithril.js
Mithril.js is a modern client-side JavaScript framework for building Single Page Applications. It's small (< 10kb gzip), fast and provides routing and XHR utilities out of the box. Mithril.js is used by companies like Vimeo and Nike, and open source platforms like Lichess. If you are an experienced developer and want to know how Mithril.js compares to other frameworks, see the framework comparison page. An easy way to try out Mithril.js is to include it from a CDN and follow this tutorial. It'll cover the majority of the API surface (including routing and XHR) but it'll only take 10 minutes. You can now update the label of the button by clicking the button. Since we used m.mount, you don't need to manually call m.render to apply the changes in the count variable to the HTML; Mithril.js does it for you.Starting Price: Free -
2
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 -
3
cryptography
cryptography
cryptography includes both high-level recipes and low-level interfaces to common cryptographic algorithms such as symmetric ciphers, message digests, and key derivation functions. Encrypt with cryptography’s high-level symmetric encryption recipe. cryptography is broadly divided into two levels. One with safe cryptographic recipes that require little to no configuration choices. These are safe and easy to use and don’t require developers to make many decisions. The other level is low-level cryptographic primitives. These are often dangerous and can be used incorrectly. They require making decisions and having an in-depth knowledge of the cryptographic concepts at work. Because of the potential danger in working at this level, this is referred to as the “hazardous materials” or “hazmat” layer. These live in the cryptography.hazmat package, and their documentation will always contain an admonition at the top.Starting Price: Free -
4
.NET MAUI
Microsoft
.NET Multi-platform App UI (.NET MAUI) is a framework for building modern, multi-platform, natively compiled iOS, Android, macOS, and Windows apps using C# and XAML in a single codebase. .NET MAUI uses the latest, modern technologies for building native apps on Android, iOS, macOS, and Windows abstracting them into one common framework built on .NET 6. Native apps look and feel like the operating system on which they belong by default and layouts are fully adapted to each device automatically with no additional code. Platform APIs are available directly from C# to access over 60 platform features from a single cross-platform API including access to things like isolated storage, sensors, geolocation, camera, and a whole lot more with no compromises.Starting Price: Free -
5
K.Explorer
Morphis Tech
A state-of-the-art AI that builds better software, cheaper and faster. K.Explorer is an AI powered Code Assistant trained on many millions of private corporate lines of code, for specific domains, and on billions of public and open-source lines of code for general purposes. Its code auto-completion features suggest code completions and entire function bodies as you type or as you search the engine for help. To make development faster and more agile it even supports Natural Language for programmers to get guidance while telling a text story about the code they want to write.Starting Price: Free -
6
ToolJet
ToolJet
ToolJet is an AI-powered platform for building full-stack internal apps, enterprise workflows, AI agents, and operational tools in minutes. Users can describe what they need in natural language and generate dashboards, admin panels, CRUD apps, support tools, and other internal applications. The platform includes an AI app builder, workflow automation agents, a built-in PostgreSQL database, visual builders, code support, and more than 80 integrations. Teams can connect databases, APIs, SaaS tools, cloud storage, AI models, and enterprise systems to build apps that automate real business processes. ToolJet supports self-hosting, cloud deployment, managed on-premise delivery, custom plugins, SSO, RBAC, audit logs, encryption, MFA, and compliance requirements such as SOC 2, GDPR, and ISO 27001. Built for enterprise development teams, ToolJet helps organizations ship secure internal apps faster while keeping control over infrastructure, data, and customization.Starting Price: $79/builder/month -
7
XiMpLe
XiMpLe
A simple editor for XML and JSON files based on a grid table view with some unique functionalities. User doesn't need to care about xml or json rules. It's possible to compare and merge xml files in a grid view. There is a support for validating xml with XSD schema(s). It can be used also for splitting big xml files and joining them back together or as a simple text editor for large files. Commercial users are able to create and run scripts. It's very easy to copy/paste data from/to spreadsheet editor. Adjacent text editor supports big files and very long lines. No installation is required, one file (1.4 MB). Free for a non-commercial use. It should run on Win 7, 8, 10 and 11 (using .NET Framework 4.5).Starting Price: 30 euro/year/user -
8
BLACKBOX AI
BLACKBOX AI
BLACKBOX AI is an advanced AI-powered platform designed to accelerate coding, app development, and deep research tasks. It features an AI Coding Agent that supports real-time voice interaction, GPU acceleration, and remote parallel task execution. Users can convert Figma designs into functional code and transform images into web applications with minimal coding effort. The platform enables screen sharing within IDEs like VSCode and offers mobile access to coding agents. BLACKBOX AI also supports integration with GitHub repositories for streamlined remote workflows. Its capabilities extend to website design, app building with PDF context, and image generation and editing.Starting Price: Free -
9
Budibase
Budibase
At Budibase, we offer the best development experience with an obsessive focus on application design. Budibase enables everybody to design like professionals. Create apps that work perfectly across mobile, tablet, and desktop. And update the theme of your app with 2 clicks. Build powerful, custom forms for any scenario including multi-step forms, public forms, surveys, and more. Change your user interface based on app conditions. Ensure certain groups of people can only access certain screens. With our open source platform, application data never has to leave your infrastructure. Deploy via Kubernetes, Docker, Digital Ocean. Or choose the Budibase Cloud and let Budibase manage everything for you. Host with Budibase and let us manage everything for you - easiest and quickest way.Starting Price: $30 per month -
10
UNOY
UNOY
Unoy is a no-code platform that enables businesses and experts to digitize, automate, and scale their knowledge through the creation of Knowledge Apps (KAPPS). KAPPS streamline rules, regulations, and decisions, and allow organizations to deploy AI-powered virtual assistants to assist knowledge workers with repetitive tasks, freeing them to focus on more complex work. Unoys modular system makes it incredibly easy to build knowledge apps with no code due to its user-friendly interface and pre-built components. With Unoys, you can seamlessly create complex knowledge apps by simply dragging and dropping modules into place, without any programming knowledge required. Unoy is the ideal solution for automating expertise and increasing operational efficiency.Starting Price: $0 -
11
Apidog
Apidog
Apidog is a complete set of tools that connects the entire API lifecycle, helping R&D teams implement best practices for API Design-first development. Design and debug APIs in a powerful visual editor. Describe and debug easily with JSON Schema support. Automate API lifecycle with Apidog's test generation from API specs, visual assertion, built-in response validation, and CI/CD. Generate visually appealing API documentation, publish to custom domain or securely share with collaborative teams. Local and cloud mock engine generate reasonable mock data according to field names and specifications without writing scripts. Quality tools have the power to unite your entire team, while ensuring that no task is needlessly repeated. Effortlessly describe your API as you test it, and generate JSON/XML schemas with a simple click. Generate test cases from APIs, add assertions visually, and create test scenarios with branches and iterations easily.Starting Price: $9 per user per month -
12
Templately
WPDeveloper
Templately is a popular WordPress plugin that helps users create and manage pre-designed templates for their websites. Templately offers an extensive collection of templates for various purposes such as blogs, business websites, eCommerce websites, portfolios, and more. These templates can be easily customized to match the user's specific needs. Besides, Templately works as SaaS (Software as a Service) product that provides a cloud-based service for creating and managing WordPress templates. That means the users can access Templately from any device with an internet connection and a web browser, without downloading or installing any software. Templately also offers collaboration and sharing features, allowing multiple users to work on the same project simultaneously and share their templates with others. The plugin is user-friendly and requires no coding knowledge, making it an excellent choice for beginners and experienced users.Starting Price: $0 -
13
JIterator
Windex Inc
JIterator Traffic Testing Platform is an automated testing solution that revolutionizes the way Java backend systems are tested. With its core functionalities centered around traffic recording and replay, it offers a streamlined approach to ensure system stability and accelerate development cycles. Key Capabilities • Traffic Recording and Replay: Capture and replay user request traffic with ease, ensuring thorough testing coverage. • Data Comparison: Quickly identify discrepancies through intelligent data comparison tools. • Automated Test Case Generation: Generate test cases automatically from recorded traffic, reducing manual effort. • Environment Simulation: Simulate and isolate testing environments for reliable and secure testing. Why Choose JIterator? • Efficiency: Streamline your testing process and reduce time-to-market. • Accuracy: Trust in the precision of automated data comparison and analysis.Starting Price: $14.95/month/user -
14
Firecrawl
Firecrawl
Firecrawl is a web data platform that enables developers and AI applications to search, scrape, and interact with websites at scale through a unified API. The platform extracts clean, structured content from web pages and delivers it in formats such as Markdown, JSON, screenshots, and other machine-readable outputs. Designed specifically for AI agents, Firecrawl allows systems to access real-time web information, navigate websites, and automate data collection workflows. It supports advanced features including JavaScript rendering, smart waiting, media parsing, and interactive page actions such as clicking, typing, and scrolling. Developers can integrate Firecrawl quickly using SDKs, APIs, MCP clients, and open-source tools. Trusted by thousands of companies, the platform helps organizations build reliable AI-powered applications that depend on accurate and accessible web data.Starting Price: $16 per month -
15
Aider
Aider AI
Aider is an AI pair-programming tool that runs directly in your terminal, helping developers build new projects or improve existing codebases using large language models. It works with both cloud-based and local LLMs, giving developers flexibility in how they use AI. Aider understands your entire codebase by mapping it, making it especially effective for larger projects. It supports over 100 programming languages and integrates tightly with Git for safe, trackable changes. Developers stay in control while accelerating development through natural language instructions.Starting Price: Free -
16
Gemini Code Assist
Google
Increase software development and delivery velocity using generative AI assistance, with enterprise security and privacy protection. Gemini Code Assist completes your code as you write, and generates whole code blocks or functions on demand. Code assistance is available in many popular IDEs, such as Visual Studio Code, JetBrains IDEs (IntelliJ, PyCharm, GoLand, WebStorm, and more), Cloud Workstations, Cloud Shell Editor, and supports 20+ programming languages, including Java, JavaScript, Python, C, C++, Go, PHP, and SQL. Through a natural language chat interface, you can quickly chat with Gemini Code Assist to get answers to your coding questions, or receive guidance on coding best practices. Chat is available in all supported IDEs. Enterprises can customize Gemini Code Assist using their organization’s private codebases and knowledge sources so that Gemini Code Assist can offer more tailored assistance. Gemini Code Assist enables large-scale changes to entire codebases.Starting Price: Free -
17
Bolt.new
StackBlitz
Bolt.new is an AI-powered app development platform that allows users to build full-stack applications directly from their browser. It enables users to create websites, web apps, and prototypes using simple natural language prompts. The platform automatically generates code, sets up project structure, and deploys applications without requiring manual setup. Users can edit and refine their projects in real time within an integrated browser-based development environment. Bolt.new eliminates the need for installing tools or configuring local environments. It supports rapid prototyping, making it easy to turn ideas into working applications quickly. Overall, Bolt.new simplifies and accelerates software development for both technical and non-technical users.Starting Price: Free -
18
AdminMart
AdminMart
AdminMart is providing high-quality admin dashboard templates for web applications. Our templates, available in both free and premium options, are designed to take your web application to the next level. With a focus on modern, production-ready, and developer-friendly designs, AdminMart offers a wide range of templates and themes, including Bootstrap, Material UI, React, Vuetify, Angular, NextJs, Nuxt Js, Vue, and Tailwind. Our templates are trusted by over 112,000 developers and agencies worldwide. What sets AdminMart apart from other providers is their commitment to customer satisfaction. We offer a 100% money-back guarantee, ensuring your satisfaction with their quality products and strong support service. We also provide faster and more professional support, prioritizing the customers. Additionally, we offer a free demo version for you to download and test before purchasing the pro version. With AdminMart, you can create a clean and sleek dashboard without needing a designer.Starting Price: $49 -
19
Amazon Q Developer
Amazon
Amazon Q Developer is a generative AI–powered coding assistant from AWS that helps developers accelerate the entire software development lifecycle. It integrates directly into popular IDEs like JetBrains, VS Code, Visual Studio, and Eclipse, providing real-time code suggestions, refactoring, documentation, and debugging assistance. Beyond coding, Amazon Q Developer supports agentic capabilities—autonomously performing tasks like feature implementation, testing, and modernization of applications. As an AWS-native expert, it helps optimize cloud resources, diagnose issues, and guide users through architectural best practices. The platform also enables seamless data and AI integration, allowing developers to build analytics and ML applications using natural language. With up to 80% faster development speed and 40% productivity gains, Amazon Q Developer delivers enterprise-grade intelligence directly inside the tools developers use every day.Starting Price: $19/month -
20
Code::Blocks
Code::Blocks
Code::Blocks is a free, open-source, cross-platform Integrated Development Environment (IDE) primarily designed for C, C++, and Fortran development. Known for its lightweight design and modular structure, Code::Blocks offers a highly customizable interface with support for multiple compilers, including GCC, Clang, and Microsoft Visual C++. It features an intuitive, user-friendly interface with essential tools like syntax highlighting, code folding, auto-completion, and a robust debugging environment with breakpoints, variable inspection, and call stack tracing. Code::Blocks is highly extensible through plugins, enabling developers to add features like version control, scripting support, and custom build tools. Its lightweight nature, flexibility, and cross-platform compatibility make it a popular choice for students, educators, and developers working on small to medium-sized C/C++ projects.Starting Price: Free -
21
Bruno
Bruno Software Inc.
Bruno is an open-source, local-first API client for exploring, testing, and documenting APIs. With native Git sync, offline data storage, and no cloud dependencies, Bruno offers developers a secure, fast, and open alternative to bloated API platforms. Trusted by 150 k+ daily users and loved by 37 k+ GitHub stargazers. Pure API Client — Bruno is not a platform or cloud SaaS. It’s a lightweight desktop app focused purely on exploring, testing, and documenting APIs — no unnecessary clutter. Local-First Security — All your data and collections stay on your machine. Nothing is synced to a third-party cloud, ensuring complete control and compliance. Native Git Sync — Collaborate and version your collections using the same workflows you already use for code — pull requests, branches, and diffs — with no proprietary lock-in. Open Source & Extensible — Backed by a passionate community, Bruno evolves transparently, with frequent contributions from developers across the worldStarting Price: $6 per user per month -
22
Scratch
Scratch
Scratch is a free visual programming language and online community where anyone can create their own stories, games, and animations. Developed by the MIT Media Lab, Scratch is designed primarily for users aged 8–16, but it is used by all ages and has a sizeable adult user base. The platform utilizes a block-based interface, allowing users to drag and connect code blocks to create programs, making it accessible for beginners. Scratch is used in many different settings, schools, museums, libraries, community centers, and homes. The platform supports over 70 languages, enabling a global community of users to share and remix projects. As of February 2023, the Scratch community has more than 103 million users and over 123 million shared projects. The website offers resources for parents and educators, including guides and tutorials to support learning and teaching. Scratch is taught and used in after-school centers, schools, and colleges, as well as other public knowledge institutions.Starting Price: Free -
23
Steel.dev
Steel.dev
Steel is an open source browser API that lets you control fleets of browsers in the cloud. From large-scale scrape jobs to fully autonomous web agents, Steel makes it easy to run browser automation in the cloud. Spin up on-demand browser sessions with a simple API call. Built-in CAPTCHA solving that keeps your automation flowing. Simple controls to never worry about getting flagged as a bot again. The average session starts in less than 1s when the client is in the same region. Run for a minute or several hours, each session can run up to 24 hours. Save and inject cookies and local storage to pick up where you left off. Easily run your Puppeteer, Playwright, or Selenium in the cloud. Session Viewer lets you view and debug live or recorded sessions.Starting Price: $99 per month -
24
JSON Editor Online
JSON Editor Online
JSON Editor Online is a versatile tool designed for viewing, editing, formatting, repairing, comparing, querying, transforming, validating, and sharing JSON data. It offers multiple editing modes, text, tree, and table, to accommodate various user preferences. It supports large JSON files up to 512 MB and provides functionalities such as JSON Schema validation, JSON-to-CSV conversion, and offline usage. Users can load and save JSON data through various methods, including clipboard operations, drag-and-drop, disk storage, and URLs. The tool also features a "Smart JSON Formatting" option for more compact and readable JSON presentations. While the free version includes ads, subscription options are available for an ad-free experience and additional features like private cloud document storage. Starting Price: $3 per month -
25
Expo
Expo.dev
Expo is an open source platform that enables developers to create universal native apps using React. It offers a comprehensive ecosystem of tools and services designed to streamline the development, review, and deployment processes. With Expo, developers can initialize new projects or integrate existing React Native projects, utilizing features like file-based routing and TypeScript support to build stack and modal screens with minimal boilerplate. It provides fast refresh capabilities, allowing real-time updates on devices through the Expo Go app. Developers have the flexibility to use any library, SDK, or write custom native code, ensuring no limitations in accessing device APIs. Expo facilitates team collaboration by enabling role-based access, QR code generation for feature previews, and integration with GitHub for streamlined pull request reviews.Starting Price: $99 per month -
26
Kiro
Amazon Web Services
Kiro is an AI‑powered integrated development environment that brings structure to AI‑driven coding by converting natural‑language prompts into clear requirements, system designs, and discrete implementation tasks validated by robust tests. Built from the ground up for agentic workflows, it features spec‑driven development, multimodal chat, “agent hooks” that trigger background tasks on events like file saves, and an autopilot mode that autonomously runs large scripts while keeping you in control. With smart context management, Kiro reduces repetitive prompts and helps implement complex features across large codebases. Native MCP integrations let you connect to documentation, databases, and APIs, and you can guide development with images of UI designs or architecture diagrams. Enterprise‑grade security and privacy ensure safe deployment, while support for Claude Sonnet models, Open VSX plugins, and existing VS Code settings delivers a familiar yet AI‑supercharged experience.Starting Price: $19 per month -
27
Untitled UI
Untitled UI
Untitled UI is the world’s largest Figma UI kit, React component library, and icon system, offering designers and developers everything needed to design and build modern interfaces at speed. The Figma library features over 900 global styles and variables for color, typography, and effects, more than 10,000 meticulously crafted components and variants, 420 ready‑to‑use desktop and mobile page examples, and 4,600 neutral icons and logos, fully integrated into one design system. On the development side, Untitled UI React provides an open‑source collection of production‑ready components built with React v19.1, Tailwind CSS v4.1, TypeScript v5.8, and React Aria, ensuring type safety, accessibility (keyboard navigation and screen‑reader support), and lightning‑fast performance without lock‑in. AI‑ready Lovable and bolt.new kits enable instant prototyping with simple prompts, while seamless Figma previews and consistent styling across both platforms.Starting Price: $129 per month -
28
Olostep
Olostep
Olostep is a web-data API platform built for AI and developer use, enabling fast, reliable extraction of clean, structured data from public websites. It supports scraping single URLs, crawling an entire site’s pages (even without a sitemap), and submitting batches of up to ~100,000 URLs for large-scale retrieval; responses can include HTML, Markdown, PDF, or JSON, and custom parsers let users pull exactly the schema they need. Features include full JavaScript rendering, use of premium residential IPs/proxy rotation, CAPTCHA handling, and built-in mechanisms for handling rate limits or failed requests. It also offers PDF/DOCX parsing and browser-automation capabilities like click, scroll, wait, etc. Olostep handles scale (millions of requests/day), aims to be cost-effective (claiming up to ~90% cheaper than existing solutions), and provides free trial credits so teams can test its APIs first.Starting Price: $9 per month -
29
Dropstone
Blankline
Dropstone is an AI-assisted integrated development environment (IDE) designed to enhance software development efficiency. It adapts to a developer’s coding patterns, providing context-aware code suggestions, automated refactoring, and real-time error detection. The platform supports multiple programming languages and frameworks and integrates with version control systems. Dropstone also includes autonomous agents capable of analyzing project context, suggesting improvements, and automating routine tasks. By combining AI-driven code assistance with project management features, Dropstone helps developers and teams streamline workflows, reduce repetitive work, and deliver production-ready software more efficiently.Starting Price: $15/month -
30
Gobii
Gobii
Gobii is a cloud-hosted platform that enables you to spin up fully managed browser-automation agents via API, allowing tasks like web-based research, form-filling, data extraction, and multi-step workflows to be automated at scale. These agents operate like “always-on employees” that can browse websites, even those without APIs, navigate dynamic content, handle JavaScript, and even rotate proxies automatically. Users can create agents, assign them prompts or tasks, and retrieve structured JSON outputs or live previews of the agent’s browser actions. Gobii supports synchronous and asynchronous task execution, secret handling for things like login credentials, schema-enforced output validation, and integrates with popular programming languages (Python, Node.js) for seamless implementation. The platform emphasises scalability (hundreds of tasks in parallel), enterprise-grade security (audit logs, proxies, task management), and a simple developer experience.Starting Price: $30 per month
