Ross ROSS = Recommend OSS · open-source software intelligence for agents

grimmory-tools/grimmory

A self-hosted library for your ebooks, comics, and audiobooks observed · 2026-08-28

github.com/grimmory-tools/grimmory · homepage · Java · AGPL-3.0 (copyleft) observed · 2026-08-28

Health v2 · maintenance only

82/100

  • Activity 99
  • Release rhythm 99
  • Longevity 12

Flags: young

How is this computed?

round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.

  • gap_med: 2.5
  • age_days: 174
  • days_rel: 11
  • days_push: 8
  • n_releases_24m: 21

Full methodology

Adoption not part of the score

4070 stars · 302 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Grimmory is a self-hosted digital library server for ebooks, comics, documents, and audiobooks, deployed via Docker with a web-based interface. It offers metadata enrichment, an in-browser reader, multi-user support with OIDC, OPDS/Kobo/KOReader sync, and automatic import via a watched BookDrop folder.

Use cases

  • self-host my ebook collection with a web reader
  • manage and read comics (CBZ/CBR) in the browser
  • sync reading progress to my Kobo or KOReader
  • serve my library to mobile apps over OPDS
  • automatically import new books from a watched folder
  • send books to my Kindle via email
  • share a library with multiple users and per-user progress
  • fetch covers and metadata from Google Books and Open Library

When to choose

  • you want a single self-hosted app for ebooks, comics, and audiobooks
  • you need OPDS, Kobo, and KOReader integration
  • you want multi-user libraries with OIDC authentication
  • you prefer automatic metadata lookup and rule-based smart shelves

When to avoid

  • you only need a lightweight Calibre alternative without a server
  • you need DRM-protected store books to work
  • you cannot run Docker or a MariaDB database
  • you need music or video media management rather than books

Facets

application · maturity active

self-hosted search-engine file-upload web-framework self-hosted files pdf media developer-tools self-hosted cross-platform ebook-library comics-reader audiobooks opds kobo-sync koreader booklore-fork kindle-send bookdrop oidc-auth metadata docker web-server

3 sources

Member repositories

RepositoryRoleHealth v2
grimmory-tools/grimmorymain82

For agents

markdown · JSON · MCP: product_card(name="grimmory-tools/grimmory")

Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem