Lightning-fast completions, deep code understanding, and agentic software engineering—right where you work.




OpenBlock is described as 'OB-1 is a terminal-based coding agent — like Claude Code, but with multi-model access and self-optimizing workflows. You bring your own API keys (or use ours), pick the best model for each task, and let OB-1 handle the rest' and is an app. There are more than 50 alternatives to OpenBlock for a variety of platforms, including Mac, Windows, Linux, Visual Studio Code and Web-based apps. The best OpenBlock alternative is Google Antigravity, which is free. Other great apps like OpenBlock are Void, Gemini CLI, opencode and Claude Code.
Lightning-fast completions, deep code understanding, and agentic software engineering—right where you work.




The most no-nonsense locally hosted (or API hosted) AI code completion plugin for Visual Studio Code, like GitHub Copilot but 100% free and 100% private.


Trag enhances code review efficiency through AI, allowing specific instructions and pattern linting. Requires GitHub integration, free for open-source uses. Saves substantial engineer time by providing AI-reviewed code ahead of manual inspection.








Open source AI coding assistant for planning, building, and fixing code. We frequently merge features from open-source projects like Roo Code and Cline, while building our own vision.




Supermaven is a coding assistant that uses AI to help you write code faster. Breeze through code refactoring with Supermaven's fast and accurate suggestions.


CodeGeeX is an AI-based coding assistant, which can suggest code in the current or following lines. It is powered by a large-scale multilingual code generation model with 13 billion parameters, pretrained on a large code corpus of more than 20 programming languages.



Amazon CodeWhisperer is a general purpose, machine learning-powered code generator that provides you with code recommendations in real time. As you write code, CodeWhisperer automatically generates suggestions based on your existing code and comments.




You think it, Junie helps make it happen – right in your IDE. Available on IntelliJ IDEA, PyCharm, WebStorm and .




Experience powerful AI without limits. Use our desktop app for everyday AI assistance, or boost your coding productivity with our JetBrains plugin.



Open source tool centered on AI-driven full stack app development, Nut generates bug analysis via Replay.io recordings and runtime behavior capturing, offering AI developers explanations for effective resolutions. Early adopters enjoy free access for feedback contributions.


Aider is a command line tool that lets you pair program with GPT-3.5/GPT-4, to edit code stored in your local git repository. Aider will directly edit the code in your local source files, and git commit the changes with sensible commit messages.
