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Comparison · Comms
Converse.js vs Mailu
A side-by-side editorial comparison of Converse.js and Mailu — release velocity, themes, recent moves, and the top alternatives to consider.
Converse.js vs Mailu: 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 Mailu?
Mailu's October: patched PHP for webmail, and a resolver that reports DNS failures
Mailu's 2024.06 branch shipped six pinned releases in October, each tied to a single issue. Three dealt with the resolver: handling the DNSSEC KSK rollover, then making the healthcheck fail on SERVFAIL, re-shipped once. Three were webmail: Roundcube 1.6.20, mitigations for the PHP2Shell CVEs, and then the patched PHP runtime. Late September releases fixed boolean settings that could not be turned off and stale webmail sessions after switching accounts via SSO.
Converse.js vs Mailu: 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.
Mailu
5.0COMMS
Mailu's October: patched PHP for webmail, and a resolver that reports DNS failures
◆ Current state
Mailu's 2024.06 branch shipped six pinned releases in October, each tied to a single issue. Three dealt with the resolver: handling the DNSSEC KSK rollover, then making the healthcheck fail on SERVFAIL, re-shipped once. Three were webmail: Roundcube 1.6.20, mitigations for the PHP2Shell CVEs, and then the patched PHP runtime. Late September releases fixed boolean settings that could not be turned off and stale webmail sessions after switching accounts via SSO.
◆ Where it's heading
The project remains in one-fix-per-release maintenance on the 2024.06 line, with upstream webmail and PHP security driving much of the cadence. Nothing in the entries points to a new main release.
◆ Prediction
The next releases will most likely follow upstream Roundcube or PHP security fixes, as three of the last six did.
Alternatives to Converse.js and Mailu
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 Mailu.
Synapse
Synapse 1.164 advertises Matrix v1.16 and v1.17 amid a run of dependency security patches
Subsplash
Subsplash gives church staff notes on every person and every Workflow card.
Maddy
maddy's latest release is a security fix, five months after its last feature work.
Grain
Grain adds consent controls and rule-based privacy as its meeting data reaches more AI tools.
Element iOS
Element Classic now asks its own users to move to Element X, if their server opts in.
See all Converse.js alternatives → · See all Mailu alternatives →
Recent activity from Converse.js and Mailu
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 11d agoMailuMailu ships patched PHP for PHP2Shell CVEs
- 12d agoMailuMailu mitigates PHP2Shell webmail CVEs
- 14d agoMailuMailu 2024.06.65: Roundcube 1.6.20 update
- 17d agoConverse.jsRelease 14.0.1 (2026-10-17)
- 19d agoMailu2024.06.64 re-ships the resolver healthcheck fix
- 21d agoMailu2024.06.63 makes the resolver healthcheck catch SERVFAIL
- 22d agoMailu2024.06.62 handles the DNSSEC KSK rollover
- 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 Mailu?
They serve adjacent needs but don't currently overlap on shipped themes. Mailu 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 Mailu?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Mailu 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 Mailu?
Top Mailu alternatives in Comms are ranked by recent ship velocity. Browse the "Mailu alternatives" section above for the current picks, or visit /alternatives/mailu for the full list with editorial commentary on each.