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Comparison · Comms
Synapse vs Ergo
A side-by-side editorial comparison of Synapse and Ergo — release velocity, themes, recent moves, and the top alternatives to consider.
Synapse vs Ergo: at a glance
What is Synapse?
A steady MSC-implementation train, interrupted by a ten-CVE security release.
Synapse is on its usual rhythm of release candidate followed by stable roughly every two weeks, with 1.158.0 shipping August 4. The substance sits in the 1.157 line: cancellable delayed events with a per-user cap, fully read markers that can move backwards, time filters on the admin redaction API, and the removal of deprecated MSC3861 auth delegation. That run was cut across on July 28 by 1.157.2, an out-of-band security release fixing six high-severity and several moderate advisories.
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.
Synapse vs Ergo: editorial side-by-side
Synapse
5.0COMMS
A steady MSC-implementation train, interrupted by a ten-CVE security release.
◆ Current state
Synapse is on its usual rhythm of release candidate followed by stable roughly every two weeks, with 1.158.0 shipping August 4. The substance sits in the 1.157 line: cancellable delayed events with a per-user cap, fully read markers that can move backwards, time filters on the admin redaction API, and the removal of deprecated MSC3861 auth delegation. That run was cut across on July 28 by 1.157.2, an out-of-band security release fixing six high-severity and several moderate advisories.
◆ Where it's heading
The feature work is almost entirely Matrix spec implementation — MSC4140, MSC4446, MSC4388, MSC4354 sticky events over simplified sliding sync — which puts Synapse's direction downstream of the spec process rather than of its own product decisions. The operational thread is different and more telling: deprecated auth paths removed, Debian 12 packaging dropped, EDU sizes capped, admin tooling given finer controls. The server is being narrowed and hardened for federated deployments carrying untrusted users.
◆ Prediction
Expect the fortnightly candidate-then-stable cadence to hold and the next features to track whichever MSCs reach stabilization. The removal of MSC3861 and the Debian 12 drop suggest more deprecations are queued for operators to plan around.
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.
Alternatives to Synapse and Ergo
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 Synapse or Ergo.
MirrorFly
MirrorFly's feed sells the chat-SDK category; the SDK itself never appears in it.
Trumpia
Trumpia publishes SMS explainers weekly and product notes never — including the same post twice.
Matrix Bridge
A bridge library whose releases are mostly its dependencies moving underneath it.
The Lounge
The Lounge ships steadily but publishes release notes that say nothing.
Discord
Discord is turning the chat client into a storefront and Nitro into a rewards program.
See all Synapse alternatives → · See all Ergo alternatives →
Recent activity from Synapse and Ergo
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 21h agoSynapsev1.158.0
- 6d agoSynapsev1.158.0rc1
- 8d agoSynapseSecurity release patches six high-severity federation flaws
- 13d agoSynapseFixes config regression rejecting falsy experimental_features
- 15d agoSynapseDelayed-event caps, backwards read markers, admin redaction filters
- 21d agoSynapse1.157 candidate drops deprecated MSC3861 auth delegation
- 22d agoErgov2.19.0-rc1: IRCv3 updates and a breaking config change
- 4mo agoErgov2.18.0-rc1 adds PostgreSQL and SQLite history backends ⚡
- 7mo 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 Synapse and Ergo?
They serve adjacent needs but don't currently overlap on shipped themes. Synapse 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 Synapse better than Ergo?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Synapse 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 Synapse?
Top Synapse alternatives in Comms are ranked by recent ship velocity. Browse the "Synapse alternatives" section above for the current picks, or visit /alternatives/synapse for the full list with editorial commentary on each.
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.