# pacexy/flow

Browser-based ePub reader

Repository: https://github.com/pacexy/flow
Canonical: https://ross.abutalabs.com/products/pacexy-flow
Homepage: https://flowoss.com
Language: TypeScript
License: AGPL-3.0
License Family: copyleft
Topics: epub-reader, nextjs, react, reactjs, typescript, epub, reader, pwa
Last push: 2026-03-28T00:18:30+00:00

## Health v2 (maintenance only)
Score: 66/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 74, release rhythm 35, longevity 100
- inputs: {"age_days": 1603, "days_push": 159, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3307, forks 287 (observed 2026-08-28T04:07:55.902872+00:00)

## What it is
Flow is a free, open-source, browser-based ePub reader built with Next.js and React, installable as a progressive web app. It supports in-book search, highlighting and annotations, custom typography, themes, grid layout for reading multiple books, and optional cloud storage (Dropbox) with self-hosting via Docker.

## Use cases
- read epub books in the browser
- self-host an epub reader
- highlight and annotate ebooks
- read epub offline as a pwa
- set a default epub reader app
- sync reading progress to cloud storage
- read multiple books side by side

## When to choose
- you want a free, open-source ePub reader that works across platforms in a browser
- you want to self-host your ebook reader with Docker
- you need annotations, highlights, and in-book search
- you want an installable PWA that works offline

## When to avoid
- you need native desktop or mobile apps with deep OS integration
- you need cloud storage other than Dropbox
- you need support for ebook formats other than ePub
- you require DRM-protected ebook support

## Facets
- artifact type: application
- maturity: active
- function: pdf-viewer, ui-components, self-hosted, file-upload, search-engine
- domain: web-development, developer-tools, files, education
- platform: browser, self-hosted
- tags: epub-reader, pwa, nextjs, react, ebook, reading-app, annotations, dropbox, web-server, docker, nodejs, typescript

## Member repositories
- pacexy/flow (main) score 66

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:55.902872+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:42:38.249811+00:00, confidence not recorded.
  - readme: https://github.com/pacexy/flow (fetched 2026-08-28T04:07:55.902872+00:00, sha 2885bfc3fb47)
  - homepage: https://flowoss.com (fetched 2026-08-29T09:35:25.461235+00:00, sha 64e727451bdb)
- Data as of 2026-08-30T08:39:29.467469+00:00.