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Comparison · Comms
Subsplash vs Synapse
A side-by-side editorial comparison of Subsplash and Synapse — release velocity, themes, recent moves, and the top alternatives to consider.
Subsplash vs Synapse: at a glance
| Feature | Subsplash | Synapse |
|---|---|---|
| Sector | Comms | Comms |
| Velocity score | 6.3 | 5.0 |
| Sparks · 30d | 1 | 0 |
| Top themes | church-management, workflow-automation, ai-assistants, giving-reconciliation | matrix-protocol, federation, homeserver, security-releases |
| Last editorial update | 6d ago | 6h ago |
| Website | — | Visit → |
What is Subsplash?
Subsplash is wiring automation and AI through the church admin stack it already owned
Workflows came out of beta in mid-July with per-step email automation, then immediately gained completion notifications for team leaders. Around it, the administrative surfaces are being rebuilt in sequence: Transfers and reconciliation now tracks who reconciled what and when, Groups gained member limits with a Full badge and finder filters, and event managers can register guests and waive payments directly from the dashboard. The AI line is filling in too — Trends AI added media and campaign data on top of giving, people, attendance and groups, following the natural-language People Assistant in May.
What is Synapse?
Synapse alternates release candidates with security patches on a tight two-week cycle
The feed is a straight release stream on a roughly two-week rhythm: a release candidate, a final, then point releases as needed. Recent substance sits in 1.157.0 — limits on scheduled delayed events, backward movement of fully read markers, time filters on the user-redaction admin API, and a configuration option to stop presence routing between users who merely share a room. 1.157.2 followed as a security release covering eleven advisories, six of them high severity.
Subsplash vs Synapse: editorial side-by-side
Subsplash
6.3COMMS
Subsplash is wiring automation and AI through the church admin stack it already owned
◆ Current state
Workflows came out of beta in mid-July with per-step email automation, then immediately gained completion notifications for team leaders. Around it, the administrative surfaces are being rebuilt in sequence: Transfers and reconciliation now tracks who reconciled what and when, Groups gained member limits with a Full badge and finder filters, and event managers can register guests and waive payments directly from the dashboard. The AI line is filling in too — Trends AI added media and campaign data on top of giving, people, attendance and groups, following the natural-language People Assistant in May.
◆ Where it's heading
Two threads run in parallel and are starting to meet. One is turning manual church-admin chores into configured automation — workflows that send their own emails, notify on completion, and enforce group capacity without a staff member watching. The other is putting a natural-language layer over an increasingly complete data set, which only becomes useful once giving, attendance, media and campaigns all live in the same place. Recent releases have been closing the gaps in that data set.
◆ Prediction
The obvious convergence is Workflows becoming triggerable from the data — a Trends AI segment or People Assistant query that drops matching people onto a workflow board automatically. Reconciliation gaining an export or accounting-package integration is the other near-term candidate given how much structure was just added to Transfers.
Synapse
5.0COMMS
Synapse alternates release candidates with security patches on a tight two-week cycle
◆ Current state
The feed is a straight release stream on a roughly two-week rhythm: a release candidate, a final, then point releases as needed. Recent substance sits in 1.157.0 — limits on scheduled delayed events, backward movement of fully read markers, time filters on the user-redaction admin API, and a configuration option to stop presence routing between users who merely share a room. 1.157.2 followed as a security release covering eleven advisories, six of them high severity.
◆ Where it's heading
Development is tracking the Matrix specification process rather than a product roadmap of its own — most features arrive as implementations of numbered MSCs, several contributed from outside. The operational theme underneath is load and blast radius: presence exclusion, caps on delayed events, and locked sliding-sync connections all reduce what a busy homeserver has to carry. Security handling is centralized and batched, shipped as one patch release rather than trickled out.
◆ Prediction
Expect 1.159.0 to follow its release candidate within roughly a week, continuing the MSC-implementation pattern. The recent removal of deprecated auth delegation suggests more cleanup of experimental configuration in the coming releases.
Alternatives to Subsplash 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 Subsplash or Synapse.
Canary Mail
Canary Mail ships maintenance across four platform lines; features have gone quiet since April.
Bandwidth
Bandwidth is closing the gaps that used to require a support ticket
Beeper
Beeper stopped aggregating apps and started merging the people inside them.
Stalwart
Stalwart is shipping email's next-generation auth stack while the specs are still in draft.
Respond.io
respond.io is monetizing AI usage directly while putting an assistant that builds agents in every workspace.
See all Subsplash alternatives → · See all Synapse alternatives →
Recent activity from Subsplash and Synapse
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 6h agoSynapsev1.159.0rc1
- 6d agoSubsplashTransfers & Reconciliation
- 7d agoSynapsev1.158.0
- 12d agoSynapsev1.158.0rc1
- 13d agoSubsplashBe notified by email when a Workflow Card is complete
- 14d agoSynapsev1.157.2
- 20d agoSynapsev1.157.1
- 21d agoSynapsev1.157.0
- 26d agoSubsplashIntroducing Group Member Limits + Group Finder Improvements
- 28d agoSubsplashEmail Automations for Workflows ⚡
- 1mo agoSubsplashRegister Guests & Waive Payments from Dashboard
- 1mo agoSubsplashMedia and Campaign Data in Trends AI
Frequently asked questions
What is the difference between Subsplash and Synapse?
They serve adjacent needs but don't currently overlap on shipped themes. Subsplash is currently shipping more aggressively (velocity 6.3 vs 5.0), with 1 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 Subsplash better than Synapse?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Subsplash is currently shipping more aggressively (velocity 6.3 vs 5.0), with 1 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 Subsplash?
Top Subsplash alternatives in Comms are ranked by recent ship velocity. Browse the "Subsplash alternatives" section above for the current picks, or visit /alternatives/subsplash 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.