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grommunio vs Synapse

A side-by-side editorial comparison of grommunio and Synapse — release velocity, themes, recent moves, and the top alternatives to consider.

grommunio vs Synapse: at a glance

FeaturegrommunioSynapse
SectorCommsComms
Velocity score0.05.0
Sparks · 30d00
Top themesgroupware, self-hosted-email, release-notes, pointer-feedmatrix, homeserver, release-candidates, link-only-notes
Last editorial update2d ago1d ago
WebsiteVisit →Visit →

What is grommunio?

grommunio's feed publishes release pointers only; the changes themselves live on GitHub.

The crawled feed carries twelve release-note stubs spanning August 2021 to June 2026, each the same 134-character sentence directing readers to GitHub for the detailed logs. Version 2026.06.1 is the most recent. Nothing in the feed states what changed in any release, so the platform's current capability surface cannot be read from this source.

Read the full grommunio trajectory →

What is Synapse?

Synapse publishes only a changelog link, so its feed records releases without describing them

Synapse is the reference Matrix homeserver, and every entry captured here has the same 80-character body: a link to CHANGES.md on the release branch. Release candidates and finals alternate on a regular rhythm — 1.158, 1.159, and now a second candidate for 1.160 — but no note in this feed says what any of them contain. Judging any individual release from this source is impossible by construction.

Read the full Synapse trajectory →

grommunio vs Synapse: editorial side-by-side

G0.0

grommunio's feed publishes release pointers only; the changes themselves live on GitHub.

◆ Current state

The crawled feed carries twelve release-note stubs spanning August 2021 to June 2026, each the same 134-character sentence directing readers to GitHub for the detailed logs. Version 2026.06.1 is the most recent. Nothing in the feed states what changed in any release, so the platform's current capability surface cannot be read from this source.

◆ Where it's heading

The only signal available is cadence, and it is thin and irregular: twelve published notes across roughly five years, with 2023.11.x, 2025.01.x and 2026.06.1 as the visible markers. That is a release-notes page maintained as an index rather than a changelog. Reading direction from grommunio would require the GitHub logs these notes point at.

◆ Prediction

Expect the next entry to be another dated pointer of the same form. Whether grommunio's real release cadence matches this feed cannot be determined from what is published here.

S
Synapse
COMMS
5.0

Synapse publishes only a changelog link, so its feed records releases without describing them

◆ Current state

Synapse is the reference Matrix homeserver, and every entry captured here has the same 80-character body: a link to CHANGES.md on the release branch. Release candidates and finals alternate on a regular rhythm — 1.158, 1.159, and now a second candidate for 1.160 — but no note in this feed says what any of them contain. Judging any individual release from this source is impossible by construction.

◆ Where it's heading

What the feed does establish is process. Each minor gets at least one release candidate before the final, candidates and finals are tagged days apart, and the cadence has held steady across three minors. That is a project shipping predictably. Anything about federation, performance or spec support would have to come from the linked changelog, which the feed never inlines.

◆ Prediction

On the established rhythm, 1.160.0 final should follow this second candidate within about a week. The notes will stay link-only unless the release tooling changes.

Alternatives to grommunio and Synapse

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 grommunio or Synapse.

See all grommunio alternatives → · See all Synapse alternatives →

Recent activity from grommunio and Synapse

Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.

  1. 1d agoSynapseSynapse 1.160.0rc2: release notes not published to the feed
  2. 8d agoSynapseSynapse 1.160.0rc1: release notes not published to the feed
  3. 15d agoSynapseSynapse 1.159.0 ships with a link-only changelog entry
  4. 22d agoSynapseSynapse 1.159.0rc1: release notes not published to the feed
  5. 29d agoSynapseSynapse 1.158.0 ships with a link-only changelog entry
  6. 1mo agoSynapseSynapse 1.158.0rc1: release notes not published to the feed
  7. 2mo agogrommunioRelease Notes 2026.06.1
  8. 1y agogrommunioRelease Notes 2025.01.2
  9. 1y agogrommunioRelease Notes 2025.01.1
  10. 2y agogrommunioRelease Notes 2023.11.3
  11. 2y agogrommunioRelease Notes 2023.11.2
  12. 2y agogrommunioRelease Notes 2023.11.1

Frequently asked questions

What is the difference between grommunio and Synapse?

They serve adjacent needs but don't currently overlap on shipped themes. Synapse is currently shipping more aggressively (velocity 5.0 vs 0.0), 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 grommunio better than Synapse?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Synapse is currently shipping more aggressively (velocity 5.0 vs 0.0), 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 grommunio?

Top grommunio alternatives in Comms are ranked by recent ship velocity. Browse the "grommunio alternatives" section above for the current picks, or visit /alternatives/grommunio for the full list with editorial commentary on each.

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.