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Comparison · Collab
Calibre-Web vs HumHub
A side-by-side editorial comparison of Calibre-Web and HumHub — release velocity, themes, recent moves, and the top alternatives to consider.
Calibre-Web vs HumHub: at a glance
What is Calibre-Web?
A self-hosted ebook library growing one reader feature and one format at a time.
Calibre-Web is a browser front-end for Calibre libraries, releasing roughly annually under versioned codenames. The recent line has concentrated on three areas: the built-in EPUB and comic readers (themes, font size, page counts, Kepub support, saved reading positions), bulk operations on the book table (multi-edit, delete, archive, mark as read), and metadata handling on upload — including extraction from a dozen audio formats. Kobo sync and OPDS keep receiving targeted fixes.
What is HumHub?
HumHub's public feed carries only betas, and 1.19's is mostly about surviving the upgrade.
The three releases visible here are all pre-release: 1.19.0-beta.1 in July, and 1.18.0-beta.6 and beta.5 before it. The 1.19 beta is dominated by upgrade-path and data-integrity repair — a foreign key violation that aborted the 1.19 comment content_id migration on databases with orphaned rows, a fatal error when deleting a user or running PurgeDeletedContents against content whose underlying record was gone, and a permissions fix where users with ManageSettings but not ManageModules were offered a Configure button on disabled modules. The 1.18 betas are ordinary polish: login screen layout, theme inheritance, validators, translations and installer fixes.
Calibre-Web vs HumHub: editorial side-by-side
Calibre-Web
0.0COLLAB
A self-hosted ebook library growing one reader feature and one format at a time.
◆ Current state
Calibre-Web is a browser front-end for Calibre libraries, releasing roughly annually under versioned codenames. The recent line has concentrated on three areas: the built-in EPUB and comic readers (themes, font size, page counts, Kepub support, saved reading positions), bulk operations on the book table (multi-edit, delete, archive, mark as read), and metadata handling on upload — including extraction from a dozen audio formats. Kobo sync and OPDS keep receiving targeted fixes.
◆ Where it's heading
The project is steadily reducing how often users need to open Calibre itself. Each release moves another desktop-app operation into the browser — bulk edits, metadata backup and merge, multi-format upload with drag and drop — while the reader gains the comfort features that make it a destination rather than a preview. The other constant is compatibility maintenance: Calibre 9 support, Python 3.12, FreeBSD binary paths, and repeated release notes warning that new dependencies must be installed first.
◆ Prediction
Expect the next release to continue widening bulk operations and reader polish, with compatibility work tracking whatever upstream Calibre and Python ship. The recurring dependency warnings suggest packaging friction remains unresolved.
HumHub
2.5COLLAB
HumHub's public feed carries only betas, and 1.19's is mostly about surviving the upgrade.
◆ Current state
The three releases visible here are all pre-release: 1.19.0-beta.1 in July, and 1.18.0-beta.6 and beta.5 before it. The 1.19 beta is dominated by upgrade-path and data-integrity repair — a foreign key violation that aborted the 1.19 comment content_id migration on databases with orphaned rows, a fatal error when deleting a user or running PurgeDeletedContents against content whose underlying record was gone, and a permissions fix where users with ManageSettings but not ManageModules were offered a Configure button on disabled modules. The 1.18 betas are ordinary polish: login screen layout, theme inheritance, validators, translations and installer fixes.
◆ Where it's heading
The 1.19 cycle is being spent making the migration survivable on real installations rather than adding capability, which is the usual shape when a schema change meets databases that have accumulated orphaned rows over years. The permission fix points the same way: tightening the boundary between managing settings and managing modules is cleanup of an authorisation model, not an extension of it.
◆ Prediction
Only beta tags appear in this feed, so a 1.19.0 stable is the obvious next milestone, but nothing here dates it. Note that the gap between the 1.18 betas and the 1.19 beta is roughly six months, which is the only cadence signal available.
Alternatives to Calibre-Web and HumHub
Other Collab products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either Calibre-Web or HumHub.
Simpplr
Simpplr's feed is research-backed internal-comms commentary, with no product releases in it.
Elgg
A social-networking engine in careful maintenance across two supported branches.
NetNewsWire
NetNewsWire's release notes have become a log of other people's rate limits.
LibrePhotos
LibrePhotos folded five repositories into one and started versioning like a real product.
Asana
Asana is bolting an agent layer and a docs surface onto work management.
See all Calibre-Web alternatives → · See all HumHub alternatives →
Recent activity from Calibre-Web and HumHub
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 16d agoHumHub1.19 upgrade migration and orphaned content fixes
- 6mo agoCalibre-WebMulti-edit for books, Instapaper in Kobo sync, Calibre 9 support
- 7mo agoHumHubLogin screen, theming and validator fixes
- 8mo agoHumHubGroup manager options and assorted UI fixes
- 11mo agoCalibre-WebKepub support in the reader plus bulk delete, archive, and mark-as-read
- 1y agoCalibre-WebAudio metadata extraction and multi-format uploads with merge
- 1y agoCalibre-WebReader themes and font sizing; requires installing http-Auth first
- 1y agoCalibre-WebMetadata backup and split library locations supported
- 2y agoCalibre-WebComic reader saves reading position; cb7 metadata supported
Frequently asked questions
What is the difference between Calibre-Web and HumHub?
They serve adjacent needs but don't currently overlap on shipped themes. HumHub is currently shipping more aggressively (velocity 2.5 vs 0.0), with 0 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is Calibre-Web better than HumHub?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. HumHub is currently shipping more aggressively (velocity 2.5 vs 0.0), with 0 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Collab products to evaluate alongside.
What are the best alternatives to Calibre-Web?
Top Calibre-Web alternatives in Collab are ranked by recent ship velocity. Browse the "Calibre-Web alternatives" section above for the current picks, or visit /alternatives/calibre-web for the full list with editorial commentary on each.
What are the best alternatives to HumHub?
Top HumHub alternatives in Collab are ranked by recent ship velocity. Browse the "HumHub alternatives" section above for the current picks, or visit /alternatives/humhub for the full list with editorial commentary on each.