Maddy
A one-binary mail server learning to behave like production infrastructure.
Comparison · Comms
Synapse vs diaspora
A side-by-side editorial comparison of Synapse and diaspora — release velocity, themes, recent moves, and the top alternatives to consider.
Synapse vs diaspora: at a glance
What is Synapse?
The reference Matrix homeserver shipping protocol work on a tight release train
Synapse is moving through the 1.156–1.158 line at roughly weekly cadence, with release candidates preceding each stable. The functional work is protocol-level: MSC4140 cancellable delayed events with per-user scheduling limits, MSC4354 sticky events exposed over MSC4186 simplified sliding sync, and stabilized ephemeral event sending. Version 1.157.0rc1 removed the deprecated MSC3861 auth delegation, and 1.157.2 was an out-of-band security release addressing several vulnerabilities rated up to high severity.
What is diaspora?
The original federated social network now ships roughly once every two years.
diaspora* is a decentralised social network run as independent pods by volunteer administrators. Release cadence has collapsed to near-dormancy: 0.9.0.0 arrived in June 2024 after a two-year gap, and 0.9.1.0 followed in April 2026 — the release notes open with "it's been a while." What still ships reliably is security work, including a fixed SSRF vulnerability in the OpenID Connect implementation and, earlier, image-processing hardening adapted from Mastodon's fix.
Synapse vs diaspora: editorial side-by-side
Synapse
5.0COMMS
The reference Matrix homeserver shipping protocol work on a tight release train
◆ Current state
Synapse is moving through the 1.156–1.158 line at roughly weekly cadence, with release candidates preceding each stable. The functional work is protocol-level: MSC4140 cancellable delayed events with per-user scheduling limits, MSC4354 sticky events exposed over MSC4186 simplified sliding sync, and stabilized ephemeral event sending. Version 1.157.0rc1 removed the deprecated MSC3861 auth delegation, and 1.157.2 was an out-of-band security release addressing several vulnerabilities rated up to high severity.
◆ Where it's heading
Development tracks the Matrix spec process directly — features arrive as MSCs graduate, and deprecated experimental paths are removed once replacements stabilize. Sliding sync is the load-bearing effort, with sticky events and ephemeral sending both being routed through it. The security release and the config regression that followed 1.157.0 show the cost of that cadence: fast lines need fast patches.
◆ Prediction
Expect the 1.158 line to continue folding MSCs into sliding sync, and further removal of experimental_features flags whose MSCs have stabilized, following the MSC3861 precedent.
diaspora
0.0COMMS
The original federated social network now ships roughly once every two years.
◆ Current state
diaspora* is a decentralised social network run as independent pods by volunteer administrators. Release cadence has collapsed to near-dormancy: 0.9.0.0 arrived in June 2024 after a two-year gap, and 0.9.1.0 followed in April 2026 — the release notes open with "it's been a while." What still ships reliably is security work, including a fixed SSRF vulnerability in the OpenID Connect implementation and, earlier, image-processing hardening adapted from Mastodon's fix.
◆ Where it's heading
The one real forward move in this window was 0.9.0.0, which opened a supported public API and switched configuration to TOML with notice that YAML support ends at 1.0. Everything since has been maintenance. The project's own framing — a minor version described as not too exciting, urging podmins to update because it is a security release — sets the expectation plainly: diaspora* is being kept safe to run rather than developed toward anything new.
◆ Prediction
A 1.0 release removing YAML configuration support is the stated next milestone, but with two years between the last two releases the timing is unpredictable. The more likely near-term event is another security-driven patch.
Alternatives to Synapse and diaspora
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 diaspora.
Friendica
Friendica keeps betting on being the fediverse node that speaks everyone else's protocols.
mailcow
Six releases, and every one of them is a security update in some form.
Element iOS
Renamed Element Classic, this client now ships one small fix every few months
Twilio
Twilio is selling trust: branded calls, scoped keys, and stricter sender vetting.
Notion
Notion is turning Custom Agents into event-driven workers with their own runtime and billing.
See all Synapse alternatives → · See all diaspora alternatives →
Recent activity from Synapse and diaspora
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1d agoSynapse1.158 release candidate opens
- 4d agoSynapseOut-of-band security release for federated homeservers
- 9d agoSynapseConfig regression on falsy experimental_features fixed
- 11d agoSynapseCancellable delayed events reach stable
- 16d agoSynapseMSC3861 auth delegation removed in 1.157 RC
- 25d agoSynapseSticky events exposed over simplified sliding sync
- 3mo agodiasporadiaspora* 0.9.1.0 patches an SSRF hole in its OIDC implementation
- 2y agodiasporadiaspora* 0.9.0.0 opens a supported API and moves config to TOML ⚡
- 3y agodiasporadiaspora* 0.7.18.2 hardens user image processing
- 3y agodiasporadiaspora* 0.7.18.1 fixes startup with multiple bundler versions
- 4y agodiasporadiaspora* 0.7.18.0 upgrades to Rails 6.1
- 4y agodiasporadiaspora* 0.7.17.0 blocks mass assignment of password and 2FA settings
Frequently asked questions
What is the difference between Synapse and diaspora?
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 Synapse better than diaspora?
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 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 diaspora?
Top diaspora alternatives in Comms are ranked by recent ship velocity. Browse the "diaspora alternatives" section above for the current picks, or visit /alternatives/diaspora for the full list with editorial commentary on each.