OpenAI Codex runs coding tasks in parallel cloud sandboxes, returns diffs and test citations for review, and integrates across CLI, IDE, and ChatGPT.
Aider
Aider is a free, open-source terminal AI coding agent. Works with any LLM, auto-commits to Git, and requires no subscription.
Gemini CLI
Gemini CLI is an open-source terminal coding agent built by Google under the Apache 2.0 license. Written in TypeScript, it launched in June 2025 and accumulated 104,000+ GitHub stars within a year. Google shut down free, Pro, and Ultra access to Jules on June 18, 2026, redirecting consumer users to Antigravity CLI, a closed-source Go-based […]
Cline
Cline is an open source AI coding assistant that runs as a VS Code extension and in the terminal. The core proposition is transparency: you pick your own LLM, you pay only for API calls at the provider rate, and every token of cost is visible. There is no subscription fee, no credit system, and […]