head to head · open source
Tabby vs T3 Code
Tabby has 33,884 GitHub stars, 1,788 forks, 335 open issues and last shipped 3 months ago. T3 Code has 22,945 stars, 5,817 forks, 1,628 open issues and last shipped yesterday. Tabby leads on adoption by 48% (33,884 vs 22,945 stars). Tabby is written in Rust under a custom or non-standard licence; T3 Code is written in TypeScript under MIT. Tabby has attracted 5% as many forks as stars, T3 Code 25%. T3 Code 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
| Tabby | T3 Code | |
|---|---|---|
| GitHub stars | ★ 34K | ★ 23K |
| License | Custom / other | MIT |
| Written in | Rust | TypeScript |
| Last push | 2026-06-30 | 2026-09-17 |
| Forks | ⑂ 1.8K | ⑂ 5.8K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Tabby if
- You weight community size — 34K stars and counting
- You want the Custom / other license terms
- Your stack matches Rust
- You value the larger contributor base for long-term maintenance
pick T3 Code if
- You want the T3 Code feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and T3 Code fits your workflow better
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 →
About T3 Code
T3 Code is an open source agent harness control surface for AI assisted coding. It lives in the developer tools ecosystem for local coding agents, and it gives users one interface for agents that are already installed and authenticated on their own computer. The project is written in TypeScript and is MIT licensed.
read the full T3 Code overview →
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Frequently asked questions
Is Tabby or T3 Code more popular?
Tabby has 33,884 GitHub stars and T3 Code has 22,945. Tabby has the larger community by that measure.
Are Tabby and T3 Code free?
Both are open source. Tabby has no licence declared in this registry, and T3 Code is licensed under MIT. Both are free to self-host.
What is the difference between Tabby and T3 Code?
Tabby is written in Rust and T3 Code in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Tabby or T3 Code?
Choose Tabby if you want the larger community (33,884 stars) or its Custom / other licence terms. Choose T3 Code if its feature set, stack or MIT licence fits better. Both are self-hostable.