IDE (Integrated Development Environment)

Run Claude Code, Codex, and OpenCode in parallel across isolated worktrees. Orca pairs a terminal-first desktop UI with PDF diff preview, hidden-file quick-open, configurable worktree cards, and fast PR review. Free, open source, cross-platform.

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

Code with the speed and knowledge of the best programmer you know. Aide is by your side.

OneWare Studio

Interactive functional programming IDE for JavaScript

Develop .NET, ASP.NET, .NET Core, Xamarin or Unity applications on Windows, Mac, Linux

Turn your analyses into high quality documents, reports, presentations and dashboards with R Markdown. Use a productive notebook interface to weave together narrative text and code to produce elegantly formatted output. Use multiple languages including R, Python, and SQL. R Markdown supports a reproducible workflow for dozens of static and dynamic output formats including HTML, PDF, MS Word, Beamer, HTML5 slides, Tufte-style handouts, books, dashboards, shiny applications, scientific articles, websites, and more.

B4X is a programming language and a set of cross-platform RAD development tools that allow complete beginners, citizen developers, and professionals to build real-world Android, iOS and desktop solutions

The Python & Django IDE with intelligent code completion, on-the-fly error checking, quick-fixes, and much more...

The beautiful, fast, flexible, native Mac code editor from Panic.

Anaconda's open-source Distribution is the easiest way to perform Python/R data science and machine learning on a single machine.

Visual Studio dev tools & services make app development easy for any platform & language. Try our Mac & Windows code editor, IDE, or Azure DevOps for free.

PyDev Manual

WebStorm: The Smartest JavaScript IDE by JetBrains

Code faster with Komodo IDE from ActiveState. Best multi-language IDE for today's web languages - Python, PHP, Perl, Golang, Ruby and more.

Open source, cross-platform IDE and Unified Debugger. Static Code Analyzer and Remote Unit Testing. Multi-platform and Multi-architecture Build System. Firmware File Explorer and Memory Inspection.

Download Portable Python for free. Minimum barebones Portable Python distribution with PyScripter as development environment. Contains no additional packages other than those provided with the official python setup from python.org NOTE: This project is NOT affiliated with portablepython.com though this project is inspired by it.

Website for Spyder, the Scientific Python Development Environment

The IDE with all the features you need, having a consistent look, feel and operation across platforms.

This is the official website of Dev-C++ Open Source project. This is the official website of Dev-C++ open source C & C++ IDE

The Eclipse Foundation - home to a global community, the Eclipse IDE, Jakarta EE and over 375 open source projects, including runtimes, tools and frameworks.