head to head · open source
cobalt vs agentes-chat
cobalt has 46,217 GitHub stars, 4,117 forks, 269 open issues and last shipped 7 months ago. agentes-chat has 1,354 stars, 236 forks, 150 open issues and last shipped today. cobalt leads on adoption by 3,313% (46,217 vs 1,354 stars). cobalt is written in Svelte under AGPL-3.0; agentes-chat is written in TypeScript under AGPL-3.0. cobalt has attracted 9% as many forks as stars, agentes-chat 17%. agentes-chat was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (collaboration), 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
| cobalt | agentes-chat | |
|---|---|---|
| GitHub stars | ★ 46K | ★ 1.4K |
| License | AGPL-3.0 | AGPL-3.0 |
| Written in | Svelte | TypeScript |
| Last push | 2026-04-06 | 2026-11-14 |
| Forks | ⑂ 4.1K | ⑂ 236 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick cobalt if
- You weight community size — 46K 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 agentes-chat if
- You want the agentes-chat feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches TypeScript
- You evaluated both and agentes-chat fits your workflow better
About cobalt
best way to save what you love cobalt.tools 💬 community discord server 🐦 twitter 🦋 bluesky cobalt is a media downloader that doesn't piss you off. it's friendly, efficient, and doesn't have ads, trackers, paywalls or other nonsense. paste the link, get the file, move on. that simple, just how it should be. cobalt monorepo this monorepo includes source code for api, frontend, and related packages: api tree & readme web tree & readme packages tree it also includes documentation in the docs tree: how to run a cobalt instance how to protect a cobalt instance cobalt api instance environment variables cobalt api…
read the full cobalt overview →
About agentes-chat
agentes.chat The open source, self hosted Slack alternative where your team and AI agents work together. Website · Cloud · Self hosting · Features · Discussions Agents join your channels and DMs with a role, an owner and a budget, work where everyone can see, and ask before anything sensitive. They think with Claude, ChatGPT and Codex, Gemini, Grok or any OpenRouter model, use MCP tools, and get a computer and a browser of their own. Self hosting is free and always will be (AGPL 3.0, no license key, no paid tier), or use agentes.chat Cloud, the paid, hosted option: both run this same codebase. Why agentes.chat…
read the full agentes-chat overview →
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Frequently asked questions
Is cobalt or agentes-chat more popular?
cobalt has 46,217 GitHub stars and agentes-chat has 1,354. cobalt has the larger community by that measure.
Are cobalt and agentes-chat free?
Both are open source. cobalt is licensed under AGPL-3.0 and agentes-chat under AGPL-3.0. Neither carries a licence fee.
What is the difference between cobalt and agentes-chat?
cobalt is written in Svelte and agentes-chat 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, cobalt or agentes-chat?
Choose cobalt if you want the larger community (46,217 stars) or its AGPL-3.0 licence terms. Choose agentes-chat if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.