Chanty
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Comparison · Comms
Stalwart vs The Lounge
A side-by-side editorial comparison of Stalwart and The Lounge — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:self-hosted
Stalwart vs The Lounge: 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 The Lounge?
The Lounge ships steadily but publishes release notes that say nothing.
The Lounge is moving through a normal maintenance cadence — a 4.5.0 that took three release candidates, two 4.5.1 pre-releases, a 4.5.2 to repair Docker and Linux packaging, and now a 4.6.0 pre-release. What none of these entries contain is content. Every announcement is the project's standard pre-release boilerplate pointing at a commit list, so the changelog documents that work happened without saying what it was.
Stalwart vs The Lounge: 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.
The Lounge
5.0COMMS
The Lounge ships steadily but publishes release notes that say nothing.
◆ Current state
The Lounge is moving through a normal maintenance cadence — a 4.5.0 that took three release candidates, two 4.5.1 pre-releases, a 4.5.2 to repair Docker and Linux packaging, and now a 4.6.0 pre-release. What none of these entries contain is content. Every announcement is the project's standard pre-release boilerplate pointing at a commit list, so the changelog documents that work happened without saying what it was.
◆ Where it's heading
The release mechanics are disciplined: pre-release, then release candidate, then stable, with feature freeze at the RC boundary. The communication is not. Readers tracking this project from the feed alone learn only version numbers and stability stage, and have to read commits to find out whether a release matters to them. Nothing in this window suggests a change of direction for the web IRC client itself.
◆ Prediction
On the established pattern, 4.6.0 should move to a release candidate and then stable, with feature work frozen once the first RC lands; whether 4.6.0 carries anything user-facing is not determinable from these notes.
Alternatives to Stalwart and The Lounge
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 The Lounge.
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 The Lounge alternatives →
Recent activity from Stalwart and The Lounge
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
- 16d agoStalwartJMAP delivery push arrives; strict relays stop rejecting calendar mail
- 23d agoStalwartFix-only release: JMAP semantics and a credential escalation
- 27d agoThe Loungev4.6.0-pre.1
- 29d agoStalwartVAPID lands for JMAP Web Push
- 1mo agoStalwartFreeBSD support, plus OAuth scopes for IMAP, SMTP and Sieve
- 1mo agoThe Loungev4.5.2 repairs broken Docker image and Linux package builds
- 2mo agoThe Loungev4.5.1-rc.1
- 2mo agoThe Loungev4.5.1-pre.1
- 3mo agoThe Loungev4.5.0-rc.3
- 4mo agoThe Loungev4.5.0-rc.2
Frequently asked questions
What is the difference between Stalwart and The Lounge?
Both compete on the same themes — self-hosted — within Comms. Stalwart and The Lounge 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 The Lounge?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Stalwart and The Lounge 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 The Lounge?
Top The Lounge alternatives in Comms are ranked by recent ship velocity. Browse the "The Lounge alternatives" section above for the current picks, or visit /alternatives/the-lounge for the full list with editorial commentary on each.