head to head · open source
lerna vs grimmory
lerna has 36,053 GitHub stars, 2,265 forks, 287 open issues and last shipped yesterday. grimmory has 4,373 stars, 324 forks, 243 open issues and last shipped yesterday. lerna leads on adoption by 724% (36,053 vs 4,373 stars). lerna is written in TypeScript under MIT; grimmory is written in Java under AGPL-3.0. lerna has attracted 6% as many forks as stars, grimmory 7%. lerna 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
| lerna | grimmory | |
|---|---|---|
| GitHub stars | ★ 36K | ★ 4.4K |
| License | MIT | AGPL-3.0 |
| Written in | TypeScript | Java |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 2.3K | ⑂ 324 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick lerna if
- You weight community size — 36K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick grimmory if
- You want the grimmory feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches Java
- You evaluated both and grimmory fits your workflow better
About lerna
Lerna is a fast, modern build system for managing and publishing multiple JavaScript/TypeScript packages from the same repository, aimed at teams that maintain monorepos and publish packages to npm.
read the full lerna overview →
About grimmory
Grimmory is a self hosted digital library for ebooks, comics, documents, and audiobooks that runs on your own server under the AGPL 3.0 licence, built for readers who want their whole collection — files, metadata, reading progress, and sharing — in one place they control rather than spread across devices, apps, and cloud accounts.
read the full grimmory overview →
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Frequently asked questions
Is lerna or grimmory more popular?
lerna has 36,053 GitHub stars and grimmory has 4,373. lerna has the larger community by that measure.
Are lerna and grimmory free?
Both are open source. lerna is licensed under MIT and grimmory under AGPL-3.0. Neither carries a licence fee.
What is the difference between lerna and grimmory?
lerna is written in TypeScript and grimmory in Java. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, lerna or grimmory?
Choose lerna if you want the larger community (36,053 stars) or its MIT licence terms. Choose grimmory if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.