Aider

Terminal pair programmer (OSS)

FreeAI IDEs & coding agentsaider.chat

What it is

The original terminal AI pair programmer, Apache-2.0 with roughly 48k stars and still actively developed. It builds a repo map of your codebase, edits files in place, runs linters and tests, and auto-commits every change with a written message. Works with almost any LLM, including local models.

Why it earns a slot

Git-native discipline: every AI edit lands as its own commit, so git diff and git revert are your undo button. It is the cheapest serious option because you pay only raw API tokens, and it scripts cleanly into CI.

Know before you commit

No GUI and no MCP-style tool ecosystem; the interaction model is chat plus file mentions, which feels dated next to fully autonomous agents.

Getting started

python -m pip install aider-install && aider-install

Field notes

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Field check

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Pricing snapshot

Free and open source (Apache 2.0) · BYO API key

Snapshots move fast — verify at checkout, and post a field note if it changed.

Drop into your Lovable chat

Evaluate Aider (https://aider.chat) for this project, then use it only if it fits what we are already building.
Context: Terminal pair programmer (OSS). The original terminal AI pair programmer, Apache-2.0 with roughly 48k stars and still actively developed. It builds a repo map of your codebase, edits files in place, runs linters and tests, and auto-commits every change with a written message. Works with almost any LLM, including local models.
Reviewer notes (general, not written for this codebase): Git-native discipline: every AI edit lands as its own commit, so git diff and git revert are your undo button. It is the cheapest serious option because you pay only raw API tokens, and it scripts cleanly into CI.
Watch out for: No GUI and no MCP-style tool ecosystem; the interaction model is chat plus file mentions, which feels dated next to fully autonomous agents.
Pricing: Free and open source (Apache 2.0) · BYO API key
Setup: python -m pip install aider-install && aider-install
Rules: treat the notes above as background only. Do not assume a theme, style, layout or feature that is not already in this project — inspect the existing code first and ask me before changing visual direction.

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