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Comparison · Comms
Ergo vs Stalwart
A side-by-side editorial comparison of Ergo and Stalwart — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:self-hosted
Ergo vs Stalwart: at a glance
What is Ergo?
Ergo keeps tracking IRCv3 upstream while quietly opening its history layer to real databases.
Ergo ships roughly two releases a year, each announced as a release candidate about a week ahead of the final. The content is consistent: whatever IRCv3 specifications have firmed up since the last cycle, plus bug fixes and config-format adjustments. The one structural change in this window was pluggable history storage, which took Ergo off its embedded database as the only option.
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.
Ergo vs Stalwart: editorial side-by-side
Ergo
2.5COMMS
Ergo keeps tracking IRCv3 upstream while quietly opening its history layer to real databases.
◆ Current state
Ergo ships roughly two releases a year, each announced as a release candidate about a week ahead of the final. The content is consistent: whatever IRCv3 specifications have firmed up since the last cycle, plus bug fixes and config-format adjustments. The one structural change in this window was pluggable history storage, which took Ergo off its embedded database as the only option.
◆ Where it's heading
This is a project with a stable release ritual and a narrow remit: be a modern IRC server that implements the spec correctly and runs as a single binary. Feature work arrives as specification support rather than product invention. The exception is the operational surface — history backends and the HTTP API — where Ergo has been steadily making itself easier to run alongside existing infrastructure instead of as a self-contained island.
◆ Prediction
The v2.19.0 final should follow its release candidate within a week or two on the established pattern; the config-format break flagged in that RC is the main thing operators will need to handle on upgrade.
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.
Alternatives to Ergo and Stalwart
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 Ergo or Stalwart.
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 Ergo alternatives → · See all Stalwart alternatives →
Recent activity from Ergo and Stalwart
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
- 29d agoStalwartVAPID lands for JMAP Web Push
- 1mo agoErgov2.19.0-rc1: IRCv3 updates and a breaking config change
- 1mo agoStalwartFreeBSD support, plus OAuth scopes for IMAP, SMTP and Sieve
- 5mo agoErgov2.18.0-rc1 adds PostgreSQL and SQLite history backends ⚡
- 8mo agoErgov2.17.0-rc1 implements the IRCv3 metadata specification
- 1y agoErgov2.16.0-rc1: bug fixes and minor updates
Frequently asked questions
What is the difference between Ergo and Stalwart?
Both compete on the same themes — self-hosted — within Comms. Stalwart 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 Ergo better than Stalwart?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Stalwart 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 Ergo?
Top Ergo alternatives in Comms are ranked by recent ship velocity. Browse the "Ergo alternatives" section above for the current picks, or visit /alternatives/ergo-irc for the full list with editorial commentary on each.
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.