COPS vs LazyLibrarian
A side-by-side comparison of two self-hosted e-books & media library options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | COPS | LazyLibrarian |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Category | E-books & Media Library | E-books & Media Library |
| License | GPL-2.0 | GPL-3.0 |
| Language | PHP | Python |
| Setup difficulty | Easy | Medium |
| Min. RAM | 128 MB | 512 MB |
| Deployment | docker, bare-metal | docker, bare-metal |
| GitHub stars | ★ 134 | ★ 1,500 |
| First released | 2013 | 2014 |
| Replaces | Kindle | Audible, Kindle |
What are COPS and LazyLibrarian?
COPS
COPS is a lightweight Calibre OPDS and HTML PHP server that exposes a Calibre library without needing Calibre running. It targets users wanting a minimal way to share their library. It is deployed via Docker or a PHP stack.
- OPDS and HTML catalog
- Reads Calibre metadata database
- Very lightweight
- No Calibre process needed
LazyLibrarian
LazyLibrarian is an open-source Python tool that automates managing an ebook and audiobook collection. It monitors authors, grabs new releases via download clients and Usenet/torrent indexers, and can hand finished books to Calibre.
- Ebook and audiobook automation
- Author monitoring
- Download client integration
- Calibre handoff
COPS vs LazyLibrarian: key differences
COPS is written in PHP, while LazyLibrarian is built with Python. Licensing differs — GPL-2.0 for COPS versus GPL-3.0 for LazyLibrarian. COPS is the lighter option, starting around 128 MB of RAM against 512 MB for LazyLibrarian. LazyLibrarian has the considerably larger community, at 1,500 GitHub stars versus 134.
Why pick each one
Choose COPS if…
- Extremely lightweight
- Easy to host
- Good OPDS support
Watch out for
- Read-only catalog
- Basic interface
Choose LazyLibrarian if…
- Automates library growth
- Handles audiobooks too
Watch out for
- Configuration is involved
- Depends on external sources
Frequently asked questions
Is COPS or LazyLibrarian better?
Neither is universally better. LazyLibrarian has the larger community, while COPS is simpler to set up (easy difficulty). Choose based on the comparison table above and your own setup.
Are COPS and LazyLibrarian free and open-source?
Yes. COPS is licensed under GPL-2.0 and LazyLibrarian under GPL-3.0. Both can be self-hosted at no software cost.
Can I run COPS and LazyLibrarian with Docker?
COPS: yes. LazyLibrarian: yes.
Which is lighter on resources, COPS or LazyLibrarian?
COPS has the smaller minimum footprint at 128 MB of RAM, compared to about 512 MB for LazyLibrarian. Real-world usage depends on library size, user count, and enabled features.