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Comparison · Comms
Converse.js vs mailcow
A side-by-side editorial comparison of Converse.js and mailcow — release velocity, themes, recent moves, and the top alternatives to consider.
Converse.js vs mailcow: at a glance
What is Converse.js?
Converse.js 14.0.1 fixes OMEMO:2 group decryption broken by Chromium 153.
Converse.js shipped 14.0.0 in June with OMEMO:2, the current revision of XMPP's end-to-end encryption, plus fixes that make encryption state and errors visible. 14.0.1 in October fixes OMEMO:2 group messages that stopped decrypting in Chromium 153, a bug that also skipped a sender check.
What is mailcow?
mailcow's monthly releases are mostly upstream security updates with small UI work
mailcow ships named monthly releases with lettered revisions, and most exist to pull in upstream security fixes for components like SOGo, Nginx, Redis, Unbound and Rspamd. The September release also added an ACL and global switch to stop external alias forwarding, a show-password toggle on login pages, and fixes such as an auth-cache wipe during nginx outages. October moved PHP to an Alpine 3.24 base and brought SOGo 5.12.12, Nginx 1.30.6 and a UI update.
Converse.js vs mailcow: editorial side-by-side
Converse.js
2.5COMMS
Converse.js 14.0.1 fixes OMEMO:2 group decryption broken by Chromium 153.
◆ Current state
Converse.js shipped 14.0.0 in June with OMEMO:2, the current revision of XMPP's end-to-end encryption, plus fixes that make encryption state and errors visible. 14.0.1 in October fixes OMEMO:2 group messages that stopped decrypting in Chromium 153, a bug that also skipped a sender check.
◆ Where it's heading
The project is in a stabilisation phase on the 14 line, with encryption correctness as the main concern. Releases are months apart.
◆ Prediction
Expect further 14.0.x patches for encryption and browser compatibility; no next major is signalled.
mailcow
5.0COMMS
mailcow's monthly releases are mostly upstream security updates with small UI work
◆ Current state
mailcow ships named monthly releases with lettered revisions, and most exist to pull in upstream security fixes for components like SOGo, Nginx, Redis, Unbound and Rspamd. The September release also added an ACL and global switch to stop external alias forwarding, a show-password toggle on login pages, and fixes such as an auth-cache wipe during nginx outages. October moved PHP to an Alpine 3.24 base and brought SOGo 5.12.12, Nginx 1.30.6 and a UI update.
◆ Where it's heading
Keeping a dozen bundled upstreams current is the product, and the cadence is built around that. Feature work arrives in small admin and web UI controls alongside the security updates.
◆ Prediction
Expect a revision of the October release carrying further upstream updates, following the lettered-revision pattern.
Alternatives to Converse.js and mailcow
Other Comms 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 Converse.js or mailcow.
Element iOS
Element Classic now asks its own users to move to Element X, if their server opts in.
Brosix
Brosix follows its communities launch with a referral push and a private-room how-to.
VerneMQ
VerneMQ follows its year-in-the-making 2.2.0 with a quick round of subscription fixes.
Session
Session survived its funding scare; now Pro is on hold and Protocol v2 is the bet.
Misskey
Misskey moves to Sentry v11 and keeps shipping security fixes in its monthly releases.
See all Converse.js alternatives → · See all mailcow alternatives →
Recent activity from Converse.js and mailcow
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 12d agomailcow🎃🐮 Mooctober 2026 | Security Update: PHP 8.2.35, SOGo 5.12.12 & Nginx 1.30.6
- 16d agoConverse.jsRelease 14.0.1 (2026-10-17)
- 27d agomailcow2026-09a: Rspamd 4.2.1 and postfix-tlspol bumps
- 1mo agomailcow🍂🐮 Mootember 2026 | Unbound 1.26.1, SOGo 5.12.11 & Redis 7.4.11
- 2mo agomailcow🏖️🐮 Mooly 2026 | Postfix 3.10.12, Rspamd 4.1.0 & Nginx 1.30.3 - Revision B
- 3mo agomailcow🏖️🐮 Mooly 2026 | Postfix 3.10.12, Rspamd 4.1.0 & Nginx 1.30.3 - Revision A
- 3mo agomailcow🏖️🐮 Mooly 2026 | Postfix 3.10.12, Rspamd 4.1.0 & Nginx 1.30.3
- 4mo agoConverse.jsOMEMO:2 encryption support ships in Converse 14 ⚡
- 4mo agoConverse.jsOMEMO bundle self-healing and new PubSub API methods
- 4mo agoConverse.jslibomemo.js dependency bump
- 4mo agoConverse.jsclient-compress replaced with native browser APIs
- 4mo agoConverse.jsFirst beta carrying the OMEMO usability fixes
Frequently asked questions
What is the difference between Converse.js and mailcow?
They serve adjacent needs but don't currently overlap on shipped themes. mailcow 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 Converse.js better than mailcow?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. mailcow 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 Comms products to evaluate alongside.
What are the best alternatives to Converse.js?
Top Converse.js alternatives in Comms are ranked by recent ship velocity. Browse the "Converse.js alternatives" section above for the current picks, or visit /alternatives/converse-js for the full list with editorial commentary on each.
What are the best alternatives to mailcow?
Top mailcow alternatives in Comms are ranked by recent ship velocity. Browse the "mailcow alternatives" section above for the current picks, or visit /alternatives/mailcow for the full list with editorial commentary on each.