head to head · open source
xerj vs Compartment
xerj has 18,817 GitHub stars, 1,435 forks, 16 open issues and last shipped yesterday. Compartment has 580 stars, 8 forks, 1 open issues and last shipped 14 days ago. xerj leads on adoption by 3,144% (18,817 vs 580 stars). xerj is written in Rust under Apache-2.0; Compartment is written in Python under Apache-2.0. xerj has attracted 8% as many forks as stars, Compartment 1%. xerj was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 3 topic tags (agent-memory, ai-agents, claude-code), 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
| xerj | Compartment | |
|---|---|---|
| GitHub stars | ★ 19K | ★ 580 |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Rust | Python |
| Last push | 2026-11-02 | 2026-10-20 |
| Forks | ⑂ 1.4K | ⑂ 8 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick xerj if
- You weight community size — 19K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Rust
- You value the larger contributor base for long-term maintenance
pick Compartment if
- You want the Compartment feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Python
- You evaluated both and Compartment fits your workflow better
About xerj
XERJ XERJ is a community trusted local AI search that indexes any folder automatically, so your coding agent stops burning tokens reading files one by one and pulls the exact code it needs instead. Reference coding is its main use case and the clearest win: point an agent at a task and it downloads the open source repos closest to it, indexes them, and reuses how they solved the problem before writing its own code. In a controlled study that cut a coding agent's output tokens by 2.7x at the same 16/16 solve rate (case study), and people report roughly 5x in everyday work (field reports). It is enough for a…
About Compartment
Compartment Encrypted, fully offline memory for AI agents. One vault on your own computer, read and written by Claude Code, Claude Desktop, Hermes Agent, OpenClaw, Cursor, Codex and any other MCP client. No API key, no account, no network, no telemetry. One click install (after pip install compartment && compartment init ): Claude Code, Claude Desktop, Hermes Agent and OpenClaw are wired by one command instead: compartment integrate claude , hermes or openclaw . Compartment is persistent memory for AI agents, stored on your own computer. What an agent learns in one session is available in every later session, in…
read the full Compartment overview →
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Frequently asked questions
Is xerj or Compartment more popular?
xerj has 18,817 GitHub stars and Compartment has 580. xerj has the larger community by that measure.
Are xerj and Compartment free?
Both are open source. xerj is licensed under Apache-2.0 and Compartment under Apache-2.0. Neither carries a licence fee.
What is the difference between xerj and Compartment?
xerj is written in Rust and Compartment in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, xerj or Compartment?
Choose xerj if you want the larger community (18,817 stars) or its Apache-2.0 licence terms. Choose Compartment if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.