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Comparison · Collab
HumHub vs Mattermost
A side-by-side editorial comparison of HumHub and Mattermost — release velocity, themes, recent moves, and the top alternatives to consider.
HumHub vs Mattermost: at a glance
What is HumHub?
HumHub's public feed carries only betas, and 1.19's is still about surviving the upgrade.
The four releases visible here are all pre-release: 1.19.0-beta.2 and beta.1, and 1.18.0-beta.6 and beta.5 before them. The 1.19 line is dominated by upgrade-path and data-integrity repair — a foreign key violation aborting the comment content_id migration on databases with orphaned rows, fatal errors when purging content whose underlying record was gone, and in beta.2 a fatal SCSS build loop left behind when the 1.19 move of static/themes into protected/humhub stranded an empty theme skeleton. Beta.2 also fixes a real leak: activities from private spaces appearing in the summary mail and dashboard of users holding only a pending invite or join request.
What is Mattermost?
Mattermost v11.11 adds data spillage exposure tracking as v12.0 breaking changes loom
Mattermost is a self-hosted, air-gap-capable team communications platform with a clear focus on defense, government, and critical infrastructure. The v11.11 release adds a post exposure radius report that lets compliance reviewers quickly see who may have accessed a flagged message. Recent releases have extended ABAC governance to team-level membership with native user attributes, removing the integration overhead previously required for attribute-based policy control.
HumHub vs Mattermost: editorial side-by-side
HumHub
5.0COLLAB
HumHub's public feed carries only betas, and 1.19's is still about surviving the upgrade.
◆ Current state
The four releases visible here are all pre-release: 1.19.0-beta.2 and beta.1, and 1.18.0-beta.6 and beta.5 before them. The 1.19 line is dominated by upgrade-path and data-integrity repair — a foreign key violation aborting the comment content_id migration on databases with orphaned rows, fatal errors when purging content whose underlying record was gone, and in beta.2 a fatal SCSS build loop left behind when the 1.19 move of static/themes into protected/humhub stranded an empty theme skeleton. Beta.2 also fixes a real leak: activities from private spaces appearing in the summary mail and dashboard of users holding only a pending invite or join request.
◆ Where it's heading
The 1.19 cycle is being spent making the migration survivable on real installations rather than adding capability, which is the usual shape when a schema and directory-layout change meets databases and webroots that have accumulated years of drift. Beta.2 extends that into the installer itself, where an unreachable database was offering to re-set-up a live instance during a transient outage. The permission and visibility fixes point the same way: tightening authorisation and content boundaries is cleanup of an existing model, not an extension of it.
◆ Prediction
Only beta tags appear in this feed, so a 1.19.0 stable is the obvious next milestone, but nothing here dates it. The beta.1-to-beta.2 gap of about a month is a faster rhythm than the roughly six months between the 1.18 and 1.19 betas.
Mattermost
5.0COLLAB
Mattermost v11.11 adds data spillage exposure tracking as v12.0 breaking changes loom
◆ Current state
Mattermost is a self-hosted, air-gap-capable team communications platform with a clear focus on defense, government, and critical infrastructure. The v11.11 release adds a post exposure radius report that lets compliance reviewers quickly see who may have accessed a flagged message. Recent releases have extended ABAC governance to team-level membership with native user attributes, removing the integration overhead previously required for attribute-based policy control.
◆ Where it's heading
The product is building toward a full-stack governance and AI audit layer for regulated operators. v12.0 (October 2026) carries a significant deprecation load—RHEL 7/8 drop, glibc baseline bump, plugin breaking changes—signaling a platform modernization cycle. Alongside the product work, a sustained thought leadership push on Zero Trust maturity, sovereign AI, and agentic AI in air-gapped environments is positioning Mattermost directly against cloud-hosted collaboration tools in classified environments.
◆ Prediction
v12.0 will consolidate the recent ABAC and AI agent audit capabilities into a more integrated governance surface; self-hosted operators on RHEL 7/8 need to begin their infrastructure migration now to stay on the supported path.
Alternatives to HumHub and Mattermost
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 HumHub or Mattermost.
GitHub
GitHub Copilot gets cost-aware inference tiers as enterprise AI tooling tightens across the platform.
Nextcloud
Nextcloud runs three LTS branches in parallel, shipping bug fixes and quiet performance wins.
Teable
Teable adds Composio integration and Scheduled Routines, pivoting from spreadsheet to agentic workflow platform.
Happeo
Happeo doubles down on SEO content to own intranet search terms for mid-market buyers.
AFFiNE
AFFiNE ships stable iOS Share Extension imports while patching editor correctness and selfhost deployment
See all HumHub alternatives → · See all Mattermost alternatives →
Recent activity from HumHub and Mattermost
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 3h agoMattermostMattermost v11.11: Data Spillage Exposure Radius Report
- 23h agoMattermostOperational Resilience: Why It Must Be a Daily Practice
- 6d agoMattermostZero Trust in Practice: Identity, Part 2 — Advanced Identity, from Static Roles to Dynamic Access
- 8d agoMattermostAI Audit Trails: The Missing Piece of Enterprise AI Adoption
- 15d agoMattermostZero Trust in Practice: Identity, Part 1 — Building the Identity Foundation
- 20d agoMattermostWhat will be deprecated in Mattermost v12.0? (October 2026)
- 28d agoHumHubPrivate-space activity leak, installer 503 handling and the stranded theme skeleton
- 1mo agoHumHub1.19 upgrade migration and orphaned content fixes
- 8mo agoHumHubLogin screen, theming and validator fixes
- 10mo agoHumHubGroup manager options and assorted UI fixes
Frequently asked questions
What is the difference between HumHub and Mattermost?
They serve adjacent needs but don't currently overlap on shipped themes. HumHub and Mattermost are shipping at a similar cadence (velocity 5.0 vs 5.0, both within Sparkpulse's "active" band). See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is HumHub better than Mattermost?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. HumHub and Mattermost are shipping at a similar cadence (velocity 5.0 vs 5.0, both within Sparkpulse's "active" band). For your specific use case, the alternatives sections above list other Collab products to evaluate alongside.
What are the best alternatives to HumHub?
Top HumHub alternatives in Collab are ranked by recent ship velocity. Browse the "HumHub alternatives" section above for the current picks, or visit /alternatives/humhub for the full list with editorial commentary on each.
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.