Mumble
Mumble's 1.6 reaches a second release candidate while 1.5 loses macOS binaries.
Comparison · Collab
Komga vs SOGo
A side-by-side editorial comparison of Komga and SOGo — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:self-hosted
Komga vs SOGo: at a glance
What is Komga?
Komga's NextUI beta keeps gaining features while the old UI gets only translations.
Komga ships every one to two weeks, and almost all feature work lands in NextUI, the rewritten web interface served at /next. The third NextUI beta in 1.28.0 added contextual navigation, such as moving between books in a series or read list, and 1.29.0 added Notable Entities metadata that only NextUI shows. The latest patches fix page counts and KOReader hashes and carry dependency and translation updates.
What is SOGo?
SOGo's 5.12 line keeps shipping security fixes, now with mandatory settings attached.
SOGo, Alinto's self-hosted webmail, calendar and contacts suite, has made most 2026 releases about security. v5.12.11 in September fixed password reset poisoning and several XSS injections, and made a SOGoPasswordRecoveryBaseURLs setting mandatory when password recovery is on, with a warning that the XSS fix may affect webmail display. v5.12.12 in October fixed another major vulnerability and now verifies LDAP TLS certificates by default.
Komga vs SOGo: editorial side-by-side
Komga
5.0COLLAB
Komga's NextUI beta keeps gaining features while the old UI gets only translations.
◆ Current state
Komga ships every one to two weeks, and almost all feature work lands in NextUI, the rewritten web interface served at /next. The third NextUI beta in 1.28.0 added contextual navigation, such as moving between books in a series or read list, and 1.29.0 added Notable Entities metadata that only NextUI shows. The latest patches fix page counts and KOReader hashes and carry dependency and translation updates.
◆ Where it's heading
NextUI is moving from preview to the main interface: each minor release adds features exclusive to it, and the old web UI now receives only translations and dependency bumps. The server side keeps adding API checks and Kobo sync fixes underneath.
◆ Prediction
Expect further NextUI betas with editing and navigation features, and eventually a release that makes NextUI the default; the entries don't give a date.
SOGo
2.5COLLAB
SOGo's 5.12 line keeps shipping security fixes, now with mandatory settings attached.
◆ Current state
SOGo, Alinto's self-hosted webmail, calendar and contacts suite, has made most 2026 releases about security. v5.12.11 in September fixed password reset poisoning and several XSS injections, and made a SOGoPasswordRecoveryBaseURLs setting mandatory when password recovery is on, with a warning that the XSS fix may affect webmail display. v5.12.12 in October fixed another major vulnerability and now verifies LDAP TLS certificates by default.
◆ Where it's heading
Fixes are increasingly arriving with secure defaults that break lax configurations, first password recovery URLs and then LDAP certificate checks. Feature work has been absent since 5.12.4 a year ago.
◆ Prediction
Further 5.12.x security releases are likely; operators should expect more defaults that require configuration changes.
Alternatives to Komga and SOGo
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 Komga or SOGo.
SiYuan
SiYuan's third 3.8.10 alpha adds a built-in Markdown editor and video looping.
Hibox
Hibox's feed now advertises free nonprofit training rather than product changes.
CommaFeed
After a summer of security patches, CommaFeed 7.4 moves feed fetching to HTTP/2.
Teable
Teable follows its Template Center rebuild with a side-panel record view.
GitHub
At Universe, GitHub folds Copilot into Enterprise seats and lets Copilot Fusion pick the model.
Recent activity from Komga and SOGo
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 5d agoKomgaPage count and KOReader hash fixes
- 19d agoKomgaRelease 1.29.1
- 20d agoSOGoSOGo 5.12.12 fixes a vulnerability, enforces LDAP TLS checks
- 21d agoKomgaRelease 1.29.0
- 1mo agoKomgaNextUI login, sorting and search fixes
- 1mo agoKomgaThird NextUI beta adds contextual navigation
- 1mo agoKomgaAPI restriction checks and a Kobo re-download fix
- 1mo agoSOGoSOGo 5.12.11: reset poisoning and XSS fixed, new required setting
- 2mo agoSOGoFour more vulnerabilities patched; all prior versions affected
- 5mo agoSOGoPatch undoes 5.12.8 regressions in preferences and mail display
- 5mo agoSOGoTwo CVEs fixed for PostgreSQL user sources
- 5mo agoSOGoFour vulnerabilities: XSS, SQL injection, OpenID impersonation
Frequently asked questions
What is the difference between Komga and SOGo?
Both compete on the same themes — self-hosted — within Collab. Komga is currently shipping more aggressively (velocity 5.0 vs 2.5), 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 Komga better than SOGo?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Komga is currently shipping more aggressively (velocity 5.0 vs 2.5), 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 Komga?
Top Komga alternatives in Collab are ranked by recent ship velocity. Browse the "Komga alternatives" section above for the current picks, or visit /alternatives/komga for the full list with editorial commentary on each.
What are the best alternatives to SOGo?
Top SOGo alternatives in Collab are ranked by recent ship velocity. Browse the "SOGo alternatives" section above for the current picks, or visit /alternatives/sogo for the full list with editorial commentary on each.