head to head · open source
calibre vs ShipShipShip
calibre has 26,327 GitHub stars, 2,743 forks, 6 open issues and last shipped yesterday. ShipShipShip has 301 stars, 18 forks, 10 open issues and last shipped 9 months ago. calibre leads on adoption by 8,647% (26,327 vs 301 stars). calibre is written in Python under GPL-3.0; ShipShipShip is written in Svelte under Apache-2.0. calibre has attracted 10% as many forks as stars, ShipShipShip 6%. calibre 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
| calibre | ShipShipShip | |
|---|---|---|
| GitHub stars | ★ 26K | ★ 301 |
| License | GPL-3.0 | Apache-2.0 |
| Written in | Python | Svelte |
| Last push | 2026-11-02 | 2026-02-18 |
| Forks | ⑂ 2.7K | ⑂ 18 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick calibre if
- You weight community size — 26K stars and counting
- You want the GPL-3.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick ShipShipShip if
- You want the ShipShipShip feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Svelte
- You evaluated both and ShipShipShip fits your workflow better
About calibre
calibre calibre is an e book manager. It can view, convert, edit and catalog e books in all of the major e book formats. It can also talk to e book reader devices. It can go out to the internet and fetch metadata for your books. It can download newspapers and convert them into e books for convenient reading. It is cross platform, running on Linux, Windows and macOS. For more information, see the calibre About page. Screenshots Screenshots page Usage See the User Manual. Development Setting up a development environment for calibre. A tarball of the source code for the current calibre release. Bugs Bug reports and…
read the full calibre overview →
About ShipShipShip
🚢 ShipShipShip A modern, self hostable changelog and roadmap platform with emoji reactions, custom themes, and automated newsletters. 🔗 Links 📋 Website 🔗 Live Demo (Login: demo / demo ) 🐳 Docker Hub ✨ Features 📋 Rich Event Management TipTap editor with markdown support, tags, and media uploads 😊 Emoji Reactions 8 reaction types (👍❤️🔥🎉👀💡🤔👎) for community feedback 🗳️ Voting System Let users vote on proposed features 📊 Kanban Board Drag and drop interface with customizable statuses 🎨 Theme System Install custom themes with manifest based configuration 📧 Newsletter Automation Auto send emails when…
read the full ShipShipShip overview →
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Frequently asked questions
Is calibre or ShipShipShip more popular?
calibre has 26,327 GitHub stars and ShipShipShip has 301. calibre has the larger community by that measure.
Are calibre and ShipShipShip free?
Both are open source. calibre is licensed under GPL-3.0 and ShipShipShip under Apache-2.0. Neither carries a licence fee.
What is the difference between calibre and ShipShipShip?
calibre is written in Python and ShipShipShip in Svelte. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, calibre or ShipShipShip?
Choose calibre if you want the larger community (26,327 stars) or its GPL-3.0 licence terms. Choose ShipShipShip if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.