head to head · open source
cobalt vs dDocs
cobalt has 43,316 GitHub stars, 3,798 forks, 269 open issues and last shipped 6 months ago. dDocs has 413 stars, 31 forks, 16 open issues and last shipped yesterday. cobalt leads on adoption by 10,388% (43,316 vs 413 stars). cobalt is written in Svelte under AGPL-3.0; dDocs is written in TypeScript under AGPL-3.0. cobalt has attracted 9% as many forks as stars, dDocs 8%. dDocs 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 | dDocs | |
|---|---|---|
| GitHub stars | ★ 43K | ★ 413 |
| License | AGPL-3.0 | AGPL-3.0 |
| Written in | Svelte | TypeScript |
| Last push | 2026-04-06 | 2026-09-17 |
| Forks | ⑂ 3.8K | ⑂ 31 |
| 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 dDocs if
- You want the dDocs 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 dDocs 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 dDocs
dDocs (Fileverse dDocs) is an end to end encrypted collaborative document editor written in TypeScript, licensed under AGPL 3.0, published as the @fileverse dev/ddoc package and offered as a hosted app at ddocs.new, and it is built for developers and privacy conscious teams who want multiplayer document editing without giving up control of the underlying data.
read the full dDocs overview →
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Frequently asked questions
Is cobalt or dDocs more popular?
cobalt has 43,316 GitHub stars and dDocs has 413. cobalt has the larger community by that measure.
Are cobalt and dDocs free?
Both are open source. cobalt is licensed under AGPL-3.0 and dDocs under AGPL-3.0. Neither carries a licence fee.
What is the difference between cobalt and dDocs?
cobalt is written in Svelte and dDocs 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 dDocs?
Choose cobalt if you want the larger community (43,316 stars) or its AGPL-3.0 licence terms. Choose dDocs if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.