head to head · open source
Tailcall vs macai
Tailcall has 7,637 GitHub stars, 1,467 forks, 45 open issues and last shipped yesterday. macai has 932 stars, 77 forks, 44 open issues and last shipped 1 months ago. Tailcall leads on adoption by 719% (7,637 vs 932 stars). Tailcall is written in Rust under Apache-2.0; macai is written in Swift under Apache-2.0. Tailcall has attracted 19% as many forks as stars, macai 8%. Tailcall was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (grok, llm), so they are genuine substitutes rather than adjacent tools.
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
| Tailcall | macai | |
|---|---|---|
| GitHub stars | ★ 7.6K | ★ 932 |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Rust | Swift |
| Last push | 2026-09-19 | 2026-08-16 |
| Forks | ⑂ 1.5K | ⑂ 77 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Tailcall if
- You weight community size — 7.6K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Rust
- You value the larger contributor base for long-term maintenance
pick macai if
- You want the macai feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Swift
- You evaluated both and macai fits your workflow better
About Tailcall
Tailcall is an Apache 2.0 licensed, Rust based developer tool listed in this registry whose repository (tailcallhq/forgecode) and README present it as Forge, an AI enhanced terminal development environment: a command line coding agent that works against Claude, GPT, O Series, Grok, Deepseek, Gemini and, per its own description, more than 300 other models.
read the full Tailcall overview →
About macai
macai is an all in one native macOS AI chat application that connects to virtually any AI provider — ChatGPT, Claude, xAI (Grok), Google Gemini, Perplexity, Ollama, OpenRouter, and almost any OpenAI compatible API — and it is built for people on macOS 14.0 or later who want one app instead of a different client per provider.
read the full macai overview →
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Frequently asked questions
Is Tailcall or macai more popular?
Tailcall has 7,637 GitHub stars and macai has 932. Tailcall has the larger community by that measure.
Are Tailcall and macai free?
Both are open source. Tailcall is licensed under Apache-2.0 and macai under Apache-2.0. Neither carries a licence fee.
What is the difference between Tailcall and macai?
Tailcall is written in Rust and macai in Swift. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Tailcall or macai?
Choose Tailcall if you want the larger community (7,637 stars) or its Apache-2.0 licence terms. Choose macai if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.