Apps similar to Codex include opencode, which is free and open source. Other options are Claude Code, Google Antigravity, Cursor and Void. There's no shortage of AI Coding Assistants like Codex, with more than 100 alternatives for Mac, Windows, Linux, the web and self-hosting.
A software development agents that work everywhere you do. From IDE to CI/CD - delegate complete tasks like refactors, incident response, and migrations to Droids.
United States
An AI assistant that lives in your browser and code editor to write, rewrite, improve, translate and develop everything you are working on, using browser On-Device AI.
AgentOne is an AI agent built to help you get work done across your apps from start to finish. Tell it what you need in plain language, and it can carry out multi-step tasks on its own using the right tools and context from your connected services.
The first AI powered SDE on iPhone. For engineers to be able to write and ship code from anywhere entirely from a phone.
United States
🚀 Get instant AI code reviews for free. Catch bugs, security issues & learn best practices. Supports Python, JavaScript, Go, Rust & 25+ languages. Try now!.
IdeaAI is a next-generation autonomous AI coding assistant designed to live natively on your desktop. Unlike browser-based chatbots or simple IDE extensions that only offer autocomplete, IdeaAI is a true agent that connects directly to your local projects.
United States
SelfCoder is AI coding assistant for VS Code-compatible editors, designed as a local-first alternative to GitHub Copilot. It integrates directly with local Ollama models to provide AI-powered code completion, chat, and coding assistance while keeping development workflows...
Desktop AI agent workstation that plans, builds, reviews, debugs and tests real projects beside your editor, and asks before it writes.
Kenya
Codayak is a free Windows AI coding workbench — a development sidekick for .NET and C# teams that works beside Visual Studio. Most AI tools help you write code; Codayak helps you ship it.
Australia
AI coding editor with agents that plan repository changes, implement edits, run tests, inspect results, and provide reversible checkpoints. AstraOne selects models per task, while browser testing, subagents, parallel work, MCP servers, terminal, CI, JetBrains, and Zed extend workflows.
Nepal
An AI coding agent in your terminal, on your own API key. Describe the steps; it runs them as a checked, resumable workflow.
