head to head · open source
cobalt vs call-me
cobalt has 43,316 GitHub stars, 3,798 forks, 269 open issues and last shipped 6 months ago. call-me has 764 stars, 89 forks, 0 open issues and last shipped 2 days ago. cobalt leads on adoption by 5,570% (43,316 vs 764 stars). cobalt is written in Svelte under AGPL-3.0; call-me is written in JavaScript under AGPL-3.0. cobalt has attracted 9% as many forks as stars, call-me 12%. call-me 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
| cobalt | call-me | |
|---|---|---|
| GitHub stars | ★ 43K | ★ 764 |
| License | AGPL-3.0 | AGPL-3.0 |
| Written in | Svelte | JavaScript |
| Last push | 2026-04-06 | 2026-09-16 |
| Forks | ⑂ 3.8K | ⑂ 89 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick cobalt if
- You weight community size — 43K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches Svelte
- You value the larger contributor base for long-term maintenance
pick call-me if
- You want the call-me feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches JavaScript
- You evaluated both and call-me fits your workflow better
About cobalt
cobalt is a media downloader built around a single promise: paste a link, get the file, move on. It is a monorepo containing the source for an API, a web frontend, and related packages, written primarily in Svelte and TypeScript. The project lives in the modern web and JavaScript ecosystem, and its public surface is hosted at cobalt.tools, while the full codebase is published under the AGPL 3.0 license.
read the full cobalt overview →
About call-me
Call Me (MiroTalk CME) is an open source, self hosted WebRTC click to call solution for websites. It is written in JavaScript, licensed under AGPL 3.0, and listed under Business Software / Collaboration & Communication. The project provides a browser based video communication widget that a website operator can host independently and embed as a Call Me button.
read the full call-me overview →
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Frequently asked questions
Is cobalt or call-me more popular?
cobalt has 43,316 GitHub stars and call-me has 764. cobalt has the larger community by that measure.
Are cobalt and call-me free?
Both are open source. cobalt is licensed under AGPL-3.0 and call-me under AGPL-3.0. Neither carries a licence fee.
What is the difference between cobalt and call-me?
cobalt is written in Svelte and call-me in JavaScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, cobalt or call-me?
Choose cobalt if you want the larger community (43,316 stars) or its AGPL-3.0 licence terms. Choose call-me if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.