head to head · open source
arscontexta vs zk
arscontexta has 3,518 GitHub stars, 234 forks, 35 open issues and last shipped 8 months ago. zk has 2,864 stars, 199 forks, 24 open issues and last shipped yesterday. arscontexta leads on adoption by 23% (3,518 vs 2,864 stars). arscontexta is written in Shell under MIT; zk is written in Go under GPL-3.0. arscontexta has attracted 7% 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 | ★ 2.9K |
| License | MIT | GPL-3.0 |
| Written in | Shell | Go |
| Last push | 2026-02-24 | 2026-11-04 |
| Forks | ⑂ 234 | ⑂ 199 |
| 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 A second brain for your agent. A Claude Code plugin that generates complete knowledge systems from conversation. You describe how you think and work. The engine derives a cognitive architecture folder structure, context files, processing pipeline, hooks, navigation maps, and note templates tailored to your domain and backed by 249 research claims. No templates. No configuration. Just conversation. v0.8.0 · Claude Code plugin · MIT Installation 1. Add the marketplace to Claude Code: 2. Install the plugin: 3. Restart Claude Code, then run: 4. Answer 2 4 questions about your domain ( 20 minutes token…
read the full arscontexta overview →
About zk
A plain text note taking assistant Description zk is a command line tool helping you to maintain a plain text Zettelkasten or personal wiki. Looking for a quick usage example? Or want to see it in action? Checkout Shivan's video, Note taking System ALL Programmers Should Consider . Join us on Matrix for general, support and development discussion: \ zk org:pub.solar. Highlights Creating notes from templates Advanced search and filtering capabilities including tags, links and mentions Integration with your favorite editors: Any LSP compatible editor zk emacs for Emacs zk nvim for Neovim 0.8+ zk vscode for Visual…
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Frequently asked questions
Is arscontexta or zk more popular?
arscontexta has 3,518 GitHub stars and zk has 2,864. 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 (3,518 stars) or its MIT licence terms. Choose zk if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.