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Comparison · Comms
Stalwart vs Wire
A side-by-side editorial comparison of Stalwart and Wire — release velocity, themes, recent moves, and the top alternatives to consider.
Stalwart vs Wire: at a glance
What is Stalwart?
Stalwart is chasing mail RFCs and its own storage layer at the same time
Stalwart ships roughly weekly, and the releases divide cleanly between standards implementation and correctness work. v0.16.18 turns toward resource control — bounds on decompressed inbound DMARC and TLS report size, a cap on RocksDB block-cache memory, column families tuned per access pattern, and a queue scheduler that stops rescanning from the earliest pending event. The preceding releases added IMAP UIDONLY, UIDBATCHES and MESSAGELIMIT, plus JMAP email push and VAPID.
What is Wire?
Wire keeps a fortnightly production train, but most tags ship without published notes.
Wire's web app cuts a production release every one to two weeks, tagged by date. Half the tags in this window carry no notes at all beyond the release name; the ones that do describe call-quality work — audio processing with automatic gain, echo cancellation and noise suppression on by default, background-effects performance under load — plus WebSocket recovery for more reliable message delivery. The file side is growing too: Shared Drives gained filter and sort, and Collabora documents can be created straight from the Files tab.
Stalwart vs Wire: editorial side-by-side
Stalwart
5.0COMMS
Stalwart is chasing mail RFCs and its own storage layer at the same time
◆ Current state
Stalwart ships roughly weekly, and the releases divide cleanly between standards implementation and correctness work. v0.16.18 turns toward resource control — bounds on decompressed inbound DMARC and TLS report size, a cap on RocksDB block-cache memory, column families tuned per access pattern, and a queue scheduler that stops rescanning from the earliest pending event. The preceding releases added IMAP UIDONLY, UIDBATCHES and MESSAGELIMIT, plus JMAP email push and VAPID.
◆ Where it's heading
Two threads run through every release. One is RFC coverage across IMAP, JMAP, CalDAV and WebDAV, implemented close to the specification including drafts. The other is a long tail of protocol-conformance fixes, many of them cases where JMAP and IMAP disagreed about the same state. The newest release adds a third: memory and scheduling limits, which is what a server codebase starts doing when deployments get large enough for defaults to hurt.
◆ Prediction
Expect continued RFC additions across the JMAP and IMAP surfaces, with more of the storage-tuning work that v0.16.18 started as RocksDB deployments scale.
Wire
5.0COMMS
Wire keeps a fortnightly production train, but most tags ship without published notes.
◆ Current state
Wire's web app cuts a production release every one to two weeks, tagged by date. Half the tags in this window carry no notes at all beyond the release name; the ones that do describe call-quality work — audio processing with automatic gain, echo cancellation and noise suppression on by default, background-effects performance under load — plus WebSocket recovery for more reliable message delivery. The file side is growing too: Shared Drives gained filter and sort, and Collabora documents can be created straight from the Files tab.
◆ Where it's heading
Wire is broadening from an encrypted messenger into a self-contained collaboration suite for buyers who cannot use the mainstream ones: calls, files, and now co-edited documents inside the same MLS-backed environment. The recurring themes are the unglamorous ones those buyers audit — end-to-end identity certificates surfaced in the device list, accessibility for passphrase entry and self-deleting messages, OpenSSL vulnerability handling. Feature work is steady but modest; reliability and compliance surface get the attention.
◆ Prediction
Expect the Files and Collabora surface to keep accreting the management features Drive just got, since that is the part of the suite furthest from parity with what it replaces.
Alternatives to Stalwart and Wire
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 Stalwart or Wire.
Proton Bridge
Proton Bridge spends its first release in ten weeks on crashes, memory bounds and dead code
Mux
Every manual control Mux ships now arrives with a Robots workflow that does it for you
Netcore Cloud
Netcore's feed remains a demand-generation channel; ten entries, zero product releases.
mailcow
mailcow's release notes are almost entirely upstream security currency.
Openfire
Openfire keeps its XMPP server current without changing what it is.
See all Stalwart alternatives → · See all Wire alternatives →
Recent activity from Stalwart and Wire
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1d agoStalwartResource limits arrive for inbound reports and RocksDB caches
- 8d agoStalwartIMAP gains UIDONLY, UIDBATCHES and message-limit extensions
- 15d agoWireFilter and sort in Shared Drives; call effects fixes
- 16d agoStalwartJMAP delivery push arrives; strict relays stop rejecting calendar mail
- 23d agoStalwartFix-only release: JMAP semantics and a credential escalation
- 29d agoStalwartVAPID lands for JMAP Web Push
- 1mo agoWireProduction release with no published notes
- 1mo agoStalwartFreeBSD support, plus OAuth scopes for IMAP, SMTP and Sieve
- 1mo agoWireProduction release with no published notes
- 1mo agoWireCall audio processing and WebSocket recovery on by default
- 2mo agoWireProduction release with no published notes
- 2mo agoWireProduction release with no published notes
Frequently asked questions
What is the difference between Stalwart and Wire?
They serve adjacent needs but don't currently overlap on shipped themes. Stalwart and Wire are shipping at a similar cadence (velocity 5.0 vs 5.0, both within Sparkpulse's "active" band). See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is Stalwart better than Wire?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Stalwart and Wire are shipping at a similar cadence (velocity 5.0 vs 5.0, both within Sparkpulse's "active" band). For your specific use case, the alternatives sections above list other Comms products to evaluate alongside.
What are the best alternatives to Stalwart?
Top Stalwart alternatives in Comms are ranked by recent ship velocity. Browse the "Stalwart alternatives" section above for the current picks, or visit /alternatives/stalwart for the full list with editorial commentary on each.
What are the best alternatives to Wire?
Top Wire alternatives in Comms are ranked by recent ship velocity. Browse the "Wire alternatives" section above for the current picks, or visit /alternatives/wire for the full list with editorial commentary on each.