head to head · open source
arscontexta vs zk
arscontexta has 3,492 GitHub stars, 226 forks, 35 open issues and last shipped 7 months ago. zk has 2,807 stars, 189 forks, 24 open issues and last shipped 8 days ago. arscontexta leads on adoption by 24% (3,492 vs 2,807 stars). arscontexta is written in Shell under MIT; zk is written in Go under GPL-3.0. arscontexta has attracted 6% as many forks as stars, zk 7%. zk was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (second-brain), 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
| arscontexta | zk | |
|---|---|---|
| GitHub stars | ★ 3.5K | ★ 2.8K |
| License | MIT | GPL-3.0 |
| Written in | Shell | Go |
| Last push | 2026-02-24 | 2026-09-12 |
| Forks | ⑂ 226 | ⑂ 189 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick arscontexta if
- You weight community size — 3.5K stars and counting
- You want the MIT license terms
- Your stack matches Shell
- You value the larger contributor base for long-term maintenance
pick zk if
- You want the zk feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches Go
- You evaluated both and zk fits your workflow better
About arscontexta
Ars Contexta is an MIT licensed Claude Code plugin that turns a short conversation about how you think and work into a complete, individualized second brain made of plain markdown files you own.
read the full arscontexta overview →
About zk
zk is a GPL 3.0 licensed, Go based command line tool that maintains a plain text Zettelkasten or personal wiki from Markdown files on disk, and it is built for programmers, researchers and writers who want their notes stored as files they own rather than inside a proprietary note application.
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Frequently asked questions
Is arscontexta or zk more popular?
arscontexta has 3,492 GitHub stars and zk has 2,807. arscontexta has the larger community by that measure.
Are arscontexta and zk free?
Both are open source. arscontexta is licensed under MIT and zk under GPL-3.0. Neither carries a licence fee.
What is the difference between arscontexta and zk?
arscontexta is written in Shell and zk in Go. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, arscontexta or zk?
Choose arscontexta if you want the larger community (3,492 stars) or its MIT licence terms. Choose zk if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.