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Create single-page, fully responsive websites online for free, with Pro features including custom domains, SEO, custom code, forms, analytics, and payment tools.

Open-source task and test automation tool and Selenium IDE. The UI.Vision RPA software is a browser extension that can do desktop automation as well! Use it for web automation, form filling, screen scraping and Robotic Process Automation (RPA).

Combines advanced development tools with scientific package capabilities for enhanced data analysis and visualization familiar to scientists.

PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams. The generator can be run anywhere within JVM and integrated with various application such as wiki, text editor, IDE, programming language, documentation generator, and others.

Hoppscotch is an open-source API development ecosystem. It helps you create your requests faster, saving you precious time on your development.

Trae is an adaptive AI IDE that transforms how you work, collaborating with you to run faster.

Autonomous coding agent right in your IDE, capable of creating/editing files, executing commands, using the browser, and more with your permission every step of the way.

The open source Firebase alternative. Supabase adds realtime and restful APIs to Postgres without a single line of code.

Incredibly fast JavaScript runtime, bundler, transpiler and package manager – all in one.

Open Source realtime backend in 1 file.

Continue is the leading open-source AI code assistant. You can connect any models and any context to build custom autocomplete and chat experiences inside VS Code and JetBrains.

JetBrains WebStorm is a commercial IDE for JavaScript, CSS & HTML built on JetBrains' IntelliJ IDEA platform.

HxD is a carefully designed and fast hex editor which, additionally to raw disk editing and modifying of main memory (RAM), handles files of any size.

A JavaScript library for building user interfaces.

StoryFlow Editor is a visual node-based tool for designing branching narratives and dialogue systems. If you're building a narrative-heavy game and tired of juggling spreadsheets, docs and text files, this is built for you.

Bluefish is a powerful editor targeted towards programmers and webdesigners, with many options to write websites, scripts and programming code. Bluefish supports many programming and markup languages, and it focuses on editing dynamic and interactive websites.

Comparing to other Android emulators, MEmu provides the highest performance and greatest compatibility. It runs on nearly all Windows devices (PC, notebook, 2-in-1 devices, tablets).

HTTP Toolkit is a beautiful, cross-platform & open-source HTTP(S) debugging proxy, analyzer & client, with built-in support for modern tools and automatic interception for clients from Docker to Android to iOS.

Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use hardware and software. It's intended for artists, designers, hobbyists, and anyone interested in creating interactive objects or environments.

Heroku is a platform as a service (PaaS) that enables developers to build, run, and operate applications entirely in the cloud.

Django is a high-level Python Web framework that encourages rapid development and clean, pragmatic design. Built by experienced developers, it takes care of much of the hassle of Web development, so you can focus on writing your app without needing to reinvent the wheel.

sourcehut is a network of useful open source tools for software project maintainers and collaborators, including git repos, bug tracking, continuous integration, and mailing lists.

GitBook is a tool for building beautiful books using Git and Markdown. It can generate your book into multiple formats:

Aptana Studio is a complete web development environment that combines powerful authoring tools with a collection of online hosting and collaboration services that help you and your team do more. Includes support for PHP, CSS, FTP, and more...

npm is a package manager for Node.js that is run through the command line and manages dependencies for an application. It is the predominant package manager for Node.js.