head to head · open source
cap vs parlant
cap has 24,271 GitHub stars, 2,234 forks, 339 open issues and last shipped yesterday. parlant has 18,318 stars, 1,553 forks, 41 open issues and last shipped yesterday. cap leads on adoption by 32% (24,271 vs 18,318 stars). cap is written in Rust under a custom or non-standard licence; parlant is written in Python under Apache-2.0. cap has attracted 9% as many forks as stars, parlant 8%. cap 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
| cap | parlant | |
|---|---|---|
| GitHub stars | ★ 24K | ★ 18K |
| License | Custom / other | Apache-2.0 |
| Written in | Rust | Python |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 2.2K | ⑂ 1.6K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick cap if
- You weight community size — 24K 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 parlant if
- You want the parlant feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Python
- You evaluated both and parlant fits your workflow better
About cap
Cap Beautiful, shareable screen recordings. Open source, fast, and built for teams that want to own their data. Website Download Docs Pricing Discord Cap is the open source alternative to Loom. It gives you fast screen recording, polished local editing, instant share links, comments, transcripts, analytics, team workspaces, custom domains, custom S3 storage, and full self hosting when you need complete control. Use Cap for product demos, bug reports, onboarding, tutorials, design reviews, engineering walkthroughs, async standups, client updates, and any moment where showing the work is faster than scheduling…
About parlant
The interaction control harness for customer facing AI agents Website • Quick Start • Examples • Discord Deutsch Español français 日本語 한국어 Português Русский 中文 Looking for an open source alternative to Ada, Decagon, or Sierra? Parlant is production ready. It streamlines the development and maintenance of enterprise grade B2C (business to consumer) and sensitive B2B interactions that need to be consistent, compliant, on brand, and comprehensively traceable. Why Parlant? Conversational context engineering is hard because real world interactions are diverse, nuanced, and non linear. ❌ The Problem…
read the full parlant overview →
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Frequently asked questions
Is cap or parlant more popular?
cap has 24,271 GitHub stars and parlant has 18,318. cap has the larger community by that measure.
Are cap and parlant free?
Both are open source. cap has no licence declared in this registry, and parlant is licensed under Apache-2.0. Both are free to self-host.
What is the difference between cap and parlant?
cap is written in Rust and parlant in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, cap or parlant?
Choose cap if you want the larger community (24,271 stars) or its Custom / other licence terms. Choose parlant if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.