The best AI Coding Assistant alternative to OpenAI Codex is Google Antigravity, which is free. If that doesn't suit you, our users have ranked more than 50 alternatives to OpenAI Codex and loads of them are AI Coding Assistants so hopefully you can find a suitable replacement. Other interesting AI Coding Assistant alternatives to OpenAI Codex are Void, Gemini CLI, Windsurf Editor and opencode.
Google Antigravity is an agentic IDE and coding environment designed to support real world software projects through autonomous development workflows. It provides an agent first workspace where developers set direction while AI agents carry out tasks such as coding, debugging...
The open source AI code editor. Write code with the best AI tools, use any model, and retain full control over your data.
Open-source terminal AI connects to development tools, understands and edits code, generates, explains, and refactors using natural language, automates complex workflows, executes shell commands, grounds interactions with search, and supports extensibility via protocols and prompts.
Windsurf Editor is an IDE merging AI and developers for lockstep collaboration with Cascade capabilities, boosting speed and contextual coding through copilot and agent-like systems across Mac, Windows, and Linux.
Terminal-based AI coding assistant featuring a themed native UI, automatic LSP integration, multi-agent sessions, 75+ supported LLMs, local and cloud model options, shareable debugging links, open source licensing, and session sharing for collaborative coding workflows.
Transform hours of debugging into seconds with a single command. Experience coding at thought-speed with Claude's AI that understands your entire codebase—no more context switching.
The AI-first Code Editor. Build software faster in an editor designed for pair-programming with AI.
Mellum-4b-base is JetBrains' first open-source large language model (LLM) optimized for code-related tasks.
A cloud-based, agentic development environment designed to accelerate how you build, test, deploy and run production-quality AI applications, all in one place.
GitHub Copilot leverages the power of OpenAI Codex to provide real-time suggestions for code and complete functions, all within your editor. With its training on vast amounts of code, GitHub Copilot translates natural language prompts into coding suggestions across multiple...
Kiro is an AI-powered IDE developed by Amazon Web Services to help developers build and ship production-ready software from prompt to deployment. Based on VS Code, it combines intuitive "vibe coding" with structured...
Tabby is an open-source, self-hosted AI coding assistant. With Tabby, every team can set up its own LLM-powered code completion server with ease.
United States
Czechia
EU
