head to head · open source
Bruno vs Tailcall
Bruno has 47,022 GitHub stars, 2,888 forks, 1,831 open issues and last shipped yesterday. Tailcall has 7,632 stars, 1,464 forks, 45 open issues and last shipped yesterday. Bruno leads on adoption by 516% (47,022 vs 7,632 stars). Bruno is written in JavaScript under MIT; Tailcall is written in Rust under Apache-2.0. Bruno has attracted 6% as many forks as stars, Tailcall 19%. Tailcall 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.
← all 8884 open source comparisons
Side by side
| Bruno | Tailcall | |
|---|---|---|
| GitHub stars | ★ 47K | ★ 7.6K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | Rust |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 2.9K | ⑂ 1.5K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Bruno if
- You weight community size — 47K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick Tailcall if
- You want the Tailcall feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Rust
- You evaluated both and Tailcall fits your workflow better
About Bruno
Bruno is a lightweight, open source API client and IDE for exploring and testing APIs, built for developers and teams who want their request collections stored as plain text in a folder on their own filesystem rather than in a vendor's cloud.
read the full Bruno overview →
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 →
More in Developer Tools
Related comparisons
More API Development & Testing projects
Compare either of these against the rest of the API Development & Testing field.
Frequently asked questions
Is Bruno or Tailcall more popular?
Bruno has 47,022 GitHub stars and Tailcall has 7,632. Bruno has the larger community by that measure.
Are Bruno and Tailcall free?
Both are open source. Bruno is licensed under MIT and Tailcall under Apache-2.0. Neither carries a licence fee.
What is the difference between Bruno and Tailcall?
Bruno is written in JavaScript and Tailcall 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, Bruno or Tailcall?
Choose Bruno if you want the larger community (47,022 stars) or its MIT licence terms. Choose Tailcall if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.