CLUSTER OFFLINE-READER-READING · 22 ENTRIES · EARLIEST ENTRY 2012-03-20
Ebook reader and sync apps
This cluster consists of ebook reader applications for mobile and desktop, focusing on formats like EPUB and PDF, with features such as annotations, offline access, and cross-device sync, often integrating with Calibre or personal book servers. Entries appear sporadically from March 2012 through June 2026, with a long gap between 2013 and 2022 and a concentration in 2025 and 2026. The leading traction signals are Liseur, Pageo: Calibre Epub Reader, and Quire, though all currently show zero stars.
Entry timeline
ENTRY TIMELINE
Each bar is the month a member carries, which is a creation date where the source published one and a crawl date otherwise. Nothing in the index was found before 11 August 2026, and coverage broadened sharply on 14–15 August, so a bar from then on reports how much we found that month, not how much was built; an earlier bar reports how far back a member's own source dated it — not how long we have been watching.
Members by activity
Activity signals, not revenue.
Build origin · 2 unlabelled
Operator · 1 commercial · 1 unlabelled
Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 2 listed below. Unlabelled means nothing has decided yet — not that the answer is small.
- 21PocketLib0★unknownliveEbook reader app that opens local ebook files, tracks reading progress, and offers free public-domain books with cloud sync.
- 22iPublishCentral Reader0★3 yrabandonedlivecommercialEbook reader app that reads PDF and EPUB files, allows organization, and syncs progress across devices for readers.
Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.