head to head · open source
Aider vs Tabby
Aider has 49,021 GitHub stars, 4,967 forks, 1,860 open issues and last shipped 4 months ago. Tabby has 33,884 stars, 1,788 forks, 335 open issues and last shipped 3 months ago. Aider leads on adoption by 45% (49,021 vs 33,884 stars). Aider is written in Python under Apache-2.0; Tabby is written in Rust under a custom or non-standard licence. Aider has attracted 10% as many forks as stars, Tabby 5%. Tabby was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Aider | Tabby | |
|---|---|---|
| GitHub stars | ★ 49K | ★ 34K |
| License | Apache-2.0 | Custom / other |
| Written in | Python | Rust |
| Last push | 2026-05-22 | 2026-06-30 |
| Forks | ⑂ 5.0K | ⑂ 1.8K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Aider if
- You weight community size — 49K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick Tabby if
- You want the Tabby feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches Rust
- You evaluated both and Tabby fits your workflow better
About Aider
Aider is an open source AI pair programming tool that runs in the terminal. It connects to large language models—cloud based or local—to assist with writing, editing, and debugging code directly within a developer’s existing workflow. Built in Python and licensed under Apache 2.0, it integrates with popular LLMs including OpenAI, Anthropic, Google Gemini, and open source models like Llama.
read the full Aider overview →
About Tabby
Tabby is a self hosted, open source AI coding assistant that acts as an on premises alternative to GitHub Copilot, aimed at developers and engineering teams that want code completion and chat without routing source code through a third party cloud service.
read the full Tabby overview →
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Frequently asked questions
Is Aider or Tabby more popular?
Aider has 49,021 GitHub stars and Tabby has 33,884. Aider has the larger community by that measure.
Are Aider and Tabby free?
Both are open source. Aider is licensed under Apache-2.0, and Tabby has no licence declared in this registry. Both are free to self-host.
What is the difference between Aider and Tabby?
Aider is written in Python and Tabby in Rust. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Aider or Tabby?
Choose Aider if you want the larger community (49,021 stars) or its Apache-2.0 licence terms. Choose Tabby if its feature set, stack or Custom / other licence fits better. Both are self-hostable.