SOGo
SOGo's release notes have become a vulnerability disclosure channel with a version number attached.
Comparison · Collab
Mattermost vs SiYuan
A side-by-side editorial comparison of Mattermost and SiYuan — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:self-hosted
Mattermost vs SiYuan: at a glance
What is Mattermost?
Access control keeps getting finer-grained for defense buyers, buried in a blog that mostly publishes essays.
Most of this feed is editorial aimed at defense, government, and critical-infrastructure audiences — air-gapped networking, Zero Trust gaps in collaboration tooling, sensitive-data translation, mobile data protection. The actual product news arrives as periodic version digests. The most recent, v11.9, adds channel-level ABAC policies, ranked attributes, and program masking, plus native Azure Blob Storage so files stay in the infrastructure a team already runs.
What is SiYuan?
SiYuan 3.8.0 ships: MCP, an AI agent and semantic search reach general availability
SiYuan is a self-hostable block-based notes application. The 3.8.0 line opened on 4 August with four features it had never shipped - an AI Agent, semantic search over embeddings, Model Context Protocol support and OIDC authentication - then spent eight prerelease builds stabilizing them. The final release landed on 12 August, adding LAN peer-assisted cloud sync and a long tail of cross-platform polish.
Mattermost vs SiYuan: editorial side-by-side
Mattermost
5.0COLLAB
Access control keeps getting finer-grained for defense buyers, buried in a blog that mostly publishes essays.
◆ Current state
Most of this feed is editorial aimed at defense, government, and critical-infrastructure audiences — air-gapped networking, Zero Trust gaps in collaboration tooling, sensitive-data translation, mobile data protection. The actual product news arrives as periodic version digests. The most recent, v11.9, adds channel-level ABAC policies, ranked attributes, and program masking, plus native Azure Blob Storage so files stay in the infrastructure a team already runs.
◆ Where it's heading
The product is pushing authorization granularity steadily downward — from server and team scope toward per-channel policy, with attribute ranking and masking to express which parts of a program a given user may see. That is a direct answer to the sovereignty argument the blog keeps making: perimeter and identity controls stop short of where the work happens. Storage is following the same logic, meeting customers inside their existing cloud tenancy rather than asking them to relocate data.
◆ Prediction
Expect the ABAC surface to keep extending into finer objects and administrative delegation, and further deployment-native storage and infrastructure integrations. The editorial run on agentic AI in mission-critical operations suggests agent governance is being positioned before it is shipped, though the release notes here do not yet show it.
SiYuan
6.3COLLAB
SiYuan 3.8.0 ships: MCP, an AI agent and semantic search reach general availability
◆ Current state
SiYuan is a self-hostable block-based notes application. The 3.8.0 line opened on 4 August with four features it had never shipped - an AI Agent, semantic search over embeddings, Model Context Protocol support and OIDC authentication - then spent eight prerelease builds stabilizing them. The final release landed on 12 August, adding LAN peer-assisted cloud sync and a long tail of cross-platform polish.
◆ Where it's heading
The 3.8.0 cycle is the same pattern as 3.7.0: freeze a feature block early, then iterate builds for a week without changing what is in it. Where 3.7 was about the application's own extensibility - a kernel plugin system, a CLI, a redesigned interface - 3.8 points outward, making the knowledge base something external AI tools can query rather than something you only read yourself. Platform breadth continues underneath both, with HarmonyOS now getting the same attention as Android.
◆ Prediction
On the 3.7 precedent, expect a 3.8.x alpha train to open within days carrying fixes against the newly released AI features; the MCP surface is the most likely thing to widen, since it currently exposes the knowledge base rather than SiYuan's editing operations.
Alternatives to Mattermost and SiYuan
Other Collab 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 Mattermost or SiYuan.
Hive
Steady weekly shipping, with Jira write-back the one release that changes what Hive is.
GitHub
GitHub is standardising the agent layer it doesn't own, while the model roster churns underneath.
Staffbase
Staffbase's public feed is employer branding, not product — the release signal isn't here.
AFFiNE
A nightly canary train where the AI platform work hides between dependency bumps
pagedown
pagedown is down to one small fix a year, mostly absorbing changes from elsewhere.
See all Mattermost alternatives → · See all SiYuan alternatives →
Recent activity from Mattermost and SiYuan
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 2d agoSiYuanSiYuan v3.8.0
- 3d agoSiYuanSiYuan v3.8.0-beta.4
- 4d agoSiYuanSiYuan v3.8.0-beta.3
- 4d agoMattermostWhat Is an Air-Gapped Network?
- 6d agoSiYuanSiYuan v3.8.0-beta.2
- 6d agoSiYuanSiYuan v3.8.0-beta.1
- 7d agoSiYuanSiYuan v3.8.0-alpha.4
- 7d agoMattermostYour Teams Are Already Translating Sensitive Data. The Question Is Where It Goes.
- 11d agoMattermostThe Collaboration Gap in Zero Trust: Why Sovereignty Can’t Stop at the Perimeter
- 16d agoMattermostAgentic AI for Mission-Critical Operations: What Enterprise Leaders Need to Know
- 24d agoMattermostSecure Mobile Collaboration: How Federal & Private Organizations Can Protect Mobile Data at Scale
- 29d agoMattermostMattermost v11.9: Channel-Level ABAC Policies, Ranked Attributes, Program Masking & More
Frequently asked questions
What is the difference between Mattermost and SiYuan?
Both compete on the same themes — self-hosted — within Collab. SiYuan is currently shipping more aggressively (velocity 6.3 vs 5.0), 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 Mattermost better than SiYuan?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. SiYuan is currently shipping more aggressively (velocity 6.3 vs 5.0), with 0 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Collab products to evaluate alongside.
What are the best alternatives to Mattermost?
Top Mattermost alternatives in Collab are ranked by recent ship velocity. Browse the "Mattermost alternatives" section above for the current picks, or visit /alternatives/mattermost for the full list with editorial commentary on each.
What are the best alternatives to SiYuan?
Top SiYuan alternatives in Collab are ranked by recent ship velocity. Browse the "SiYuan alternatives" section above for the current picks, or visit /alternatives/siyuan for the full list with editorial commentary on each.