Page 6 | Best Application Development Software for JavaScript

V Programming Language

Simple, fast, safe, and compiled. For developing maintainable software. Simple language for building maintainable programs. You can learn the entire language by going through the documentation over a weekend, and in most cases, there's only one way to do something. This results in simple, readable, and maintainable code. This results in simple, readable, and maintainable code. Despite being simple, V gives a lot of power to the developer and can be used in pretty much every field, including systems programming, webdev, gamedev, GUI, mobile, science, embedded, tooling, etc. V is very similar to Go. If you know Go, you already know 80% of V. Bounds checking, No undefined values, no variable shadowing, immutable variables by default, immutable structs by default, option/result and mandatory error checks, sum types, generics, and immutable function args by default, mutable args have to be marked on call.

Starting Price: Free

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Blocksy

Build your next web project visually in minutes, without coding skills. Blocksy is lighter and faster than most similar WordPress themes. Feels fast and numbers confirm that, it is ranked at the top in most speed testing tools. Built from scratch to be 100% compatible with the Gutenberg editor and blocks. Load JavaScript behavior when you really need it using web pack’s support for dynamic imports. Easily build and customize your online store in minutes and start selling like a pro. Blocksy is ready to be translated into any language and doesn’t contain hardcoded strings. Every single line of code is thoughtfully written and is open to changes and new features. Customizer changes are synced in real-time in the preview window without slowing your work flow. Surprise your mobile users by giving them a unique experience while they navigate. Blocksy was built and designed to work with the best WordPress page builders out there, just start creating your most ambitious designs.

Starting Price: $49 per year

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Flow

It's hard to build smart tools for dynamic languages like JavaScript. Flow understands your code and makes its knowledge available, enabling other smart tools to be built on top of Flow. Making major changes to large codebases can be scary. Flow helps you refactor safely, so you can focus on the changes you want to make, and stop worrying about what you might break. Working in a codebase with lots of developers can make it difficult to keep your master branch working. Flow can help prevent bad rebases. Flow can help protect your carefully designed library from misuse and misinterpretation. And Flow can help you understand the code you wrote six months ago.

Starting Price: Free

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Grails

A powerful Groovy-based web application framework for the JVM built on top of Spring Boot. Convention-over-configuration, sensible defaults, opinionated APIs, and the Groovy language combine to make the Grails® framework easy to learn for Java developers. The Grails framework is built on top of Spring Boot and leverages Spring Boot's time-saving features, such as Spring-powered dependency injection. The Grails framework seamlessly and transparently integrates and interoperates with Java, the JVM, and existing Java EE containers. Apache Groovy is a language for the Java platform designed to enhance developers' productivity. It is an optionally-typed and dynamic language but with static-typing and static compilation capabilities. The Grails framework seamlessly integrates with GORM, a data access toolkit that provides a rich set of APIs for accessing relational and non-relational data. GORM also includes implementations for Hibernate (SQL), MongoDB, Cassandra, and Neo4j.

Starting Price: Free

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GraalVM

Discover libraries and frameworks that work out-of-the-box with Native Image. Apply Graal, an advanced optimizing compiler, that generates faster and leaner code requiring fewer compute resources. Compile Java applications ahead of time to native binaries that start up instantly and deliver peak performance with no warmup time. Leverage the best features and libraries of popular languages in a single app with no overhead. Debug, monitor, profile, and optimize resource consumption in Java and across multiple languages. GraalVM’s high-performance JIT compiler generates optimized native machine code that runs faster, produces less garbage, and uses less CPU thanks to a battery of advanced compiler optimizations and aggressive and sophisticated inlining techniques. The end results are applications that run faster and consume fewer resources, reducing cloud and infrastructure costs.

Starting Price: Free

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UseCSV

Drop our Importer javascript into your app and your users will experience an easy and powerful data import process. Let users upload data in the format that's most convenient for them, including files from legacy Excel versions. Choose from a library of common validation rules including email, phone, currency and number formats. Imported data is sent as JSON to your backend by webhook. Alternatively, use the JS callback option and keep data local to the browser. Replace your data import process with a well designed and intuitive experience. We've researched common challenges people face, and designed a process that holds their hand every step of the way. Format validation happens before data is imported to your app. Our in-browser spreadsheet editor means users can fix validation errors immediately, without having to go back into Excel.

Starting Price: $19 per month

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$Refraction$

Refraction

Refraction is a code-generation tool for developers. It uses AI to generate code for you. You can use it to generate unit tests, documentation, refactor code, and more. Generate code using AI in 34 languages — Assembly, C#, C++, CoffeeScript, CSS, Dart, Elixir, Erlang, Go, GraphQL, Groovy, Haskell, HTML, Java, JavaScript, Kotlin, LaTeX, Less, Lua, MatLab, Objective-C, OCaml, Perl, PHP, Python, R Lang, Ruby, Rust, Sass / SCSS, Scala, Shell, SQL, Swift, and TypeScript. Join thousands of developers around the world using Refraction to generate documentation, create unit tests, refactor code, and more using AI. Use the power of AI to automate the tedious parts of software development like testing, documentation, and refactoring, so you can focus on what matters. Refactor, optimize, fix and style-check your code. Generate unit tests for your code with various test frameworks. Explain the purpose of your code to make it easier to understand.

Starting Price: $8 per month

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SpellBox

With SpellBox, you can say goodbye to hours of frustrating coding and hello to quick, easy solutions. SpellBox creates the code you need from simple prompts, so you can solve your toughest programming problems in seconds. No more time wasted on syntax errors, debugging, or scouring the internet for answers. With SpellBox, you'll have the code you need right at your fingertips, allowing you to focus on what really matters, delivering top-quality results. With the code explanation feature, you can save time by quickly gaining a deep understanding of the code you are working with, without having to spend hours researching or studying documentation. It's the perfect tool for anyone looking to improve their coding proficiency and maximize their productivity. With code bookmarking, you can save your code snippets, and quickly find what you retrieve them later. This feature is especially useful for developers who work on multiple projects and need to access their code snippets frequently.

Starting Price: $40 per month

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Loopple

Building Bootstrap Dashboards and Templates have never been easier. Using Loopple Editor, you will cut out your development time and you will ship your projects faster. Building Tailwind CSS Dashboards and Templates have never been easier. Using Loopple Editor, you will cut out your development time and you will ship your projects faster. Access builder based on Soft UI Dashboard Design for Tailwind by Creative Tim - Designed for those who like bold elements and beautiful websites.

Starting Price: $9 per month

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PlayCode

The #1 JavaScript playground and sandbox to write, run and repl it. JavaScript playground is perfect for learning and prototyping javascript sandboxes. Fast and easy to use. Start a JavaScript playground project using ready-to-use templates. JavaScript is one of the most popular languages for web development. It is needed in order to make web pages alive. Today JavaScript can be run not only in the browser but also on the server. Learning, practicing and prototyping is much easier right in the javascript playground because the browser is designed to run javascript. This is the perfect coding IDE. In turn, PlayCode tries to use all the browser features to ensure maximum, comfortable run javascript sandbox. Read, evaluate, print, and loop, a simple pre-configured coding environment that quickly shows the JavaScript execution result. So, you just open PlayCode without installing anything, write code, and JavaScript playground runs your code instantly and shows the result.

Starting Price: $4.99 per month

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Snipit

Save and organize your code snippets in the cloud. Share and collaborate with your team members. Create code snippets in the web app, or use the browser extension to snip code blocks directly from the pages you visit. Be in full control of your code snippets. Create private lists and collections and keep things to yourself. Group similar code snippets in lists and collections and keep everything organized. Let your friends and colleagues see your private lists and collections. Give them write access for a true collaboration experience. Add custom tags and mark your code snippets as favorites, so you can easily find what you need. Find everything, from anywhere, quickly! Or use the smart search to intelligently find things by collection, list, title, syntax, or tags. View and edit your code snippets with a syntax-colored code editor. With support for 140 languages, you're basically covered! Search code snippets stored in your Snipit library and paste them directly into your project.

Starting Price: €5 per month

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SnippLeaf

You can save any kind of code snippet like HTML snippets, JavaScript snippets, or PHP snippets and later easily manage them. It's free for users who have maximum 40 snippets to save. Mainly this is a private snippet book and aims at private usage. Yes, there is sharing option but a very simple one (no direct sharing to social networks). SnippLeaf is a fast online snippet manager with intuitive keyboard controls for managing snippets. The login form is the only thing separating you from your snippets. After login first thing you see is your snippets. Use the bookmark button to access SnippLeaf in the separate window with no typing URL. Secure HTTP traffic (SSL), code highlighter, auto-save on editing, snippet groups, crossplatform. It's web-based so any device with a browser. Snippet sharing by unique/secret URL. Social authentication with Google, Facebook, Twitter, and Github (Gists supported). Search/filter, auto sorting snippets by last modified, and several sorting options.

Starting Price: Free

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Lightly

Develop your apps efficiently with Multilingual cloud IDE - Lightly. Create high-quality code in no time with AI-generated code and collaborative development features. Lightly is a powerful cloud IDE that supports multiple programming languages, including Java, Python, C++, HTML, JavaScript. Write, run, and debug code on iPad, anywhere, anytime. The AI-generated code feature helps you quickly generate code. Collaborative development enables easy team collaboration in real-time. Lightly can deploy and host your projects without managing infrastructures. We'll provide project images to efficiently help you deploy on AWS, Azure, GCP, or any other cloud provider. You focus on your creativity and ideas, and let the AI programming assistant do the rest for you!

Starting Price: $9 per month

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Extism

Dylibso

Extism is an open-source, universal plug-in system to make all software programmable, and it's powered by WebAssembly. In-depth documentation, constantly updated as the project grows. 15+ officially supported Host SDKs, making Extism embeddable in the most popular languages. 7+ officially supported PDKs, to write plug-ins in whichever language a developer would like. A growing set of runtime features makes Extism an excellent plug-in system for apps of all types & sizes. Fully-featured canonical reference demo with Elixir host SDK, and plugins in Rust, TypeScript, & Javascript. Implementation of a turn-based multiplayer game platform and games included to play and review. Games are implemented as WebAssembly modules containing a specific set of exports. Check out the source code on GitHub, download the installer, and get started. 100% open-source code. Fork it, experiment, & run your own game server.

Starting Price: Free

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ToDesktop

We sign your desktop app with EV Microsoft Authenticode and Apple Gatekeeper certificates. Code signing is super-important because your app downloads and installs without warning dialogs. Your app will regularly auto-update to ensure the underlying browser is always up to date. Plus, this is how we deliver performance improvements, security patches, and additional features to your app. You'll get a customized installer for Windows, Mac and Linux. We even provide a magic link you can send your users which will detect their operating system and download the most up-to-date version of your app. ToDesktop will detect your icon and colors when you give it your web app's URL. Don't worry you can edit them if we don't get it right.

Starting Price: $58 per month

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Inworld

The developer platform for AI characters. Get a fully integrated platform for AI characters that goes beyond large language models (LLMs), and adds configurable safety, knowledge, memory, narrative controls, multimodality, and more. Craft characters with distinct personalities and contextual awareness that stay in-world or on brand. Seamlessly integrate into real-time applications, with optimization for scale and performance built-in. Optimized for real-time experiences, Inworld offers low-latency interactions that scale with your application. Orchestrating across LLMs allows us to deliver high-quality interactions with faster inference and lower costs. Every interaction has a context and models need to be aware of yours. Add custom knowledge, content and safety guardrails, and narrative controls to keep your AI in character, in-world, or on brand. Put personality at the center of your AI. Our multimodal AI mimics the full range of human expression.

Starting Price: $20 per month

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DevCycle

DevCycle is the leading feature management platform that combines the benefits of OpenFeature and continuous delivery. Open Source Flexibility + SaaS Simplicity: DevCycle is the only platform where OpenFeature is built-in to its SDKs and fully committed to the open standards community with open source SDKs and APIs. This flexibility is combined with DevCycle’s edge architecture and local bucketing to provide teams high scalability and low latency partnered with enterprise-level security and compliance guarantees. Total Observability Into Your Feature Flags: Teams have complete visibility into all their features across their organization. DevCycle observability integrations help track, monitor and diagnose feature flag usage while developer integrations and tooling give full control and visibility into feature flags within code. Customized Release Strategies: Teams can choose their preferred feature release strategies with advanced tools for gradual and percentage based rollout

Starting Price: 0

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Quest

Generate ReactJS code from your design. Clean, extendable, just like you would hand code. Push to your repo and launch. Our AI models generate real, useful code. It incorporates all the things professional developers care about. Use our chat prompt to modify styling, write business logic & connect to your backend. Bring in your custom designs. Quest generates code components incorporating design systems and component libraries. Preview your app and push to your GitHub and launch it when ready. Quest was built with developers in mind. It automates the tedious parts of building an app, yet gives you full control so you can build whatever you want. Generate clean code per the best of industry standards. Extend it to add your own use cases or business logic. Native support for MUI, Chakra & Ant (coming soon) or effortlessly integrate your own or any design system. Download the code or push it to your GitHub. Do whatever you want with it. Quest generates industry-standard React components.

Starting Price: $58 per month

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Noodl

Noodl’s low-code platform creates high-performing teams of designers and developers working together in a single, powerful environment that can take ideas from prototype to production. Fluently move between working on frontend and backend using Noodl’s visual programming language. Build full-stack software in a way that is optimized for speed and cross-team collaboration. See your data and logic come alive when connecting them to your UI components. All data flows are visualized live as you build or interact with your app, making handovers and debugging much easier. Mix in JavaScript with a single click and blend flexible visual programming with code. Code is a first-class citizen, and supports powerful collaboration with non-coders. Build your own reusable UI & logic components from core nodes and existing components. Noodl’s component model is flexible and made to scale in the same way as regular code.

Starting Price: $19 per month

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Astro

Astro Framework

Astro is the all-in-one web framework designed for speed. Pull your content from anywhere and deploy it everywhere, all powered by your favorite UI components and libraries. Astro optimizes your website as no other framework can. Leverage Astro's unique zero-JS frontend architecture to unlock higher conversion rates with better SEO. Astro was designed for your content. Fetch data from any CMS or work locally with type-safe Markdown and MDX APIs. Build personal and professional blogs with Astro's built-in Markdown support and content APIs. Stand out from the crowd with a lightning-fast site that ranks higher in SEO. Agencies use Astro to build fast websites, faster. Customize every site with full control over your frontend code. Time is money. Give your customers a better shopping experience and grow your business faster. Put your best foot forward with a portfolio that performs. Help people get to know you (and your work) faster.

Starting Price: Free

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Five

Five is a low-code development environment that helps software developers build and deploy bespoke business software. Rapidly build release-ready software using Five’s prebuilt features, such as a hosted SQL database, authentication, or access control. Connect to multiple data sources and query (almost) any data source, such as external databases (PostgreSQL, MySQL, SQL Server & more) or REST API endpoints. Add full code almost anywhere through its native support for SQL, JavaScript, TypeScript, and HTML, Five never limits developers by what’s available out of the box. Five offers a free download that comes with no time limits. You can download it on your desktop and start building for free. Once you have developed a production-worthy application, you can deploy it to the cloud by subscribing to one of our hosting plans for as low as US$29.99/month. Five takes care of all the complicated deployment processes, allowing you to focus on what matters the most - your applications

Starting Price: $29.99/month

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Locofy

Frontend development accelerated with AI. Turn designs into frontend code for web & mobile. Build full apps, screens, components & design systems. Ship products 10x faster with your existing design tools, libraries, tech stack & CI/CD workflows. Figma & Adobe XD to React, React Native, HTML/CSS, Gatsby, Next.js, Vue, and more coming soon. Keep using the tools you already use. We provide a Figma & Adobe XD plugin to tag your interactive elements and handle styling, layout, and responsiveness. As a bonus, we provide pre-built components from Material UI, Bootstrap, Ant Design, Chakra UI as well as your Storybook. Locofy converts your designs into production-ready code for React, React Native, HTML-CSS, Next.js, Gatsby, Vue, and more on the way in your preferred framework. Make reusable components and props with LocoAI. Export your code in your preferred settings (CSS Modules, Tailwind, CSS, Typescript, JavaScript, Expo).

Starting Price: Free

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Sciter

Sciter brings a stack of web technologies to desktop UI development. Web designers, and developers, can reuse their experience and expertise in creating modern-looking desktop applications. Various GUI frameworks offer different UI declaration and styling languages, such as QML and XAML (Microsoft WPF). On the contrary, Sciter allows the use of time-proven, robust, and flexible HTML and CSS for GUI definition and GPU-accelerated rendering. In almost 10 years, the Sciter UI engine has become the secret weapon of success for some of the most prominent antivirus products on the market, Norton Antivirus and Internet Security, Comodo Internet Security, ESET Antivirus, BitDefender Antivirus, and others. The use of HTML/CSS has allowed their UI to stay in touch with modern GUI trends throughout all these years and will continue to well into the future. Sciter Engine is a single, compact DLL of 5+ Mb in size.

Starting Price: $310 one-time payment

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LVGL

LVGL is the most popular free and open source embedded graphics library to create beautiful UIs for any MCU, MPU, and display type. Use SquareLine Studio, our drag-and-drop UI editor, to simplify the development. 30+ built-in widgets, 100+ style properties, web-inspired layout managers, and a typography system supporting many languages. LVGL is fully open source and has no external dependencies which makes its porting incredibly simple. It works with any modern MCU or MPU and can be used with any (RT)OS or bare metal setup to drive ePaper, monochrome, OLED, or TFT displays, and even monitors. Besides, it's free even for commercial projects. SquareLine Studio is an easy-to-use drag-and-drop UI editor tool for LVGL where even designers can create fully functional UIs. Just like LVGL, SquareLine Studio is also fully vendor-agnostic. We have a great network of people and companies who can help you design and develop your UIs, implement drivers, or the whole application.

Starting Price: Free

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Annotator

Annotator is an open source JavaScript library to easily add annotation functionality to any webpage. Annotations can have comments, tags, links, users, and more. Annotator is designed for easy extensibility so it's a cinch to add a new feature or behaviour. Annotator also fosters an active developer community with contributors from four continents, building 3rd party plugins allowing the annotation of PDFs, EPUBs, videos, images, sound, and more. Adding an annotation to any website is easy with Annotator. First, download the Annotator library, and include it in your HTML. Annotator has a simple but powerful plugin architecture. Plug-ins can also be included for adding functionality such as user permissions, tags, filtering, and formatting. More than a dozen projects rely on Annotator for their digital annotation needs and many are open source. Share text and video annotations using social networks or email.

Starting Price: Free

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SigNoz

SigNoz is an open source Datadog or New Relic alternative. A single tool for all your observability needs, APM, logs, metrics, exceptions, alerts, and dashboards powered by a powerful query builder. You don’t need to manage multiple tools for traces, metrics, and logs. Get great out-of-the-box charts and a powerful query builder to dig deeper into your data. Using an open source standard frees you from vendor lock-in. Use auto-instrumentation libraries of OpenTelemetry to get started with little to no code change. OpenTelemetry is a one-stop solution for all your telemetry needs. A single standard for all telemetry signals means increased developer productivity and consistency across teams. Write queries on all telemetry signals. Run aggregates, and apply filters and formulas to get deeper insights from your data. SigNoz uses ClickHouse, a fast open source distributed columnar database. Ingestion and aggregations are lightning-fast.

Starting Price: $199 per month

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Testfully

From powerful API client features to advanced testing and monitoring, Testfully does it all. Enjoy the flexibility of cloud and offline-only storage, seamless team collaboration, and easy migration, all in one multi-platform tool. Easily transfer your data from Postman or Insomnia directly into Testfully. Flexible and secure, set global, environment, and folder variables scoped to workspace or user. Customize auth, parameters, headers, and body to build any HTTP request easily. Work together effortlessly, add teams, assign roles, and control folder access. Supports major schemes like OAuth2 for secure and streamlined authorization. From basic to complex, Testfully enables quick, effective testing without the need for coding, making advanced API testing accessible and hassle-free. Execute all requests in a folder simultaneously, sequentially, or randomly with just one click. Validate responses and perform contract testing using a declarative format, no coding is needed.

Starting Price: $49 per month

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Svix

Webhooks require a lot more engineering time, resources and ongoing maintenance than you would first expect. Building a secure, reliable, and scalable webhook service is hard and time consuming. We built it so you can focus on what matters most, your business. Customer endpoints fail or hang more often than you think. You need automatic retries to ensure deliverability. You need to monitor the deliverability of your webhooks to different endpoints, disable failing ones and notify your customers. Webhooks come with a myriad of security implications, such as SSRF, replay attacks and unauthenticated webhook events. You would need to build a UI for your users to add and remove endpoints, inspect logs and get ongoing reports. Offer your users a great developer experience, including the ability to test, inspect and replay their webhooks.

Starting Price: $490 per month

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PortSwigger Burp Suite Professional

PortSwigger

Hands-on security testers need the best tools for the job. Tools you have faith in, and enjoy using all day long. The tools that other professionals trust. Burp Suite Professional is the web security tester's toolkit of choice. Use it to automate repetitive testing tasks, then dig deeper with its expert-designed manual and semi-automated security testing tools. Burp Suite Professional can help you to test for OWASP top 10 vulnerabilities, as well as the very latest hacking techniques. Smart automation works in concert with expert-designed manual tools, to save you time. Optimize your workflow, and do more of what you do best. Burp Scanner can navigate and scan JavaScript-heavy single-page applications (SPAs), scan APIs, and enable the prerecording of complex authentication sequences. A toolkit designed and used by professional testers. Utilize features like the ability to record everything you did on an engagement and a powerful search function to improve efficiency and reliability.

Starting Price: $449 per year

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Workflow Engine

Optimajet

Embeddable .NET library for running workflows in .NET applications with integrated HTML5 graphical workflow designer. Designer allows you to easily create interactive workflows of any complexity, there’s no need to draft them programmatically. Workflow Engine is a backbone solution for business process management (BPM) which makes it feasible to automate the workflow design by using low-code visual builders. It is based on the .NET framework and JavaScript libraries. Workflow Engine enables workflow processing and correct integration by providing a graphic designer to create process workflow schemes and at the same time, this software component facilitates the management, execution, and visualization of workflow processes. Integration with solutions based on other technologies or databases is roughly the same and should not entail any difficulties. Workflow Engine offers its users all the components necessary to implement workflows of any complexity.

Starting Price: $499 one-time payment

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Best Application Development Software for JavaScript - Page 6

Compare the Top Application Development Software that integrates with JavaScript as of June 2025 - Page 6

V Programming Language

Blocksy

Flow

Grails

GraalVM

UseCSV

Refraction

SpellBox

Loopple

PlayCode

Snipit

SnippLeaf

Lightly

Extism

ToDesktop

Inworld

DevCycle

Quest

Noodl

Astro

Five

Locofy

Sciter

LVGL

Annotator

SigNoz

Testfully

Svix

PortSwigger Burp Suite Professional

Workflow Engine

Best Application Development Software for JavaScript - Page 6

Compare the Top Application Development Software that integrates with JavaScript as of June 2025 - Page 6

V Programming Language

Blocksy

Flow

Grails

GraalVM

UseCSV

Refraction

SpellBox

Loopple

PlayCode

Snipit

SnippLeaf

Lightly

Extism

ToDesktop

Inworld

DevCycle

Quest

Noodl

Astro

Five

Locofy

Sciter

LVGL

Annotator

SigNoz

Testfully

Svix

PortSwigger Burp Suite Professional

Workflow Engine

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