head to head · open source
calibre vs zk-nvim
calibre has 26,327 GitHub stars, 2,743 forks, 6 open issues and last shipped yesterday. zk-nvim has 871 stars, 69 forks, 0 open issues and last shipped 1 months ago. calibre leads on adoption by 2,923% (26,327 vs 871 stars). calibre is written in Python under GPL-3.0; zk-nvim is written in Lua under GPL-3.0. calibre has attracted 10% as many forks as stars, zk-nvim 8%. 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 | zk-nvim | |
|---|---|---|
| GitHub stars | ★ 26K | ★ 871 |
| License | GPL-3.0 | GPL-3.0 |
| Written in | Python | Lua |
| Last push | 2026-11-02 | 2026-10-01 |
| Forks | ⑂ 2.7K | ⑂ 69 |
| 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 zk-nvim if
- You want the zk-nvim feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches Lua
- You evaluated both and zk-nvim 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 zk-nvim
zk nvim Neovim extension for the zk plain text note taking assistant. Checkout Shivan's video, Note taking System ALL Programmers Should Consider , to see it in action. Join us on Matrix for general, support and development discussion: \ zk org:pub.solar. Requirements Installation Via packer.nvim Via vim plug Via lazy.nvim To get the best experience, it's recommended to also install either Telescope, fzf, mini.pick, or snacks.picker Setup [!IMPORTANT]\ If you have the zk cli installed, then you do not need to install zk lsp via Mason (or otherwise). Default lazy.nvim setup: Note that this will not add any key…
read the full zk-nvim overview →
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Frequently asked questions
Is calibre or zk-nvim more popular?
calibre has 26,327 GitHub stars and zk-nvim has 871. calibre has the larger community by that measure.
Are calibre and zk-nvim free?
Both are open source. calibre is licensed under GPL-3.0 and zk-nvim under GPL-3.0. Neither carries a licence fee.
What is the difference between calibre and zk-nvim?
calibre is written in Python and zk-nvim in Lua. 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 zk-nvim?
Choose calibre if you want the larger community (26,327 stars) or its GPL-3.0 licence terms. Choose zk-nvim if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.