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Comparison · Collab
Elgg vs Mattermost
A side-by-side editorial comparison of Elgg and Mattermost — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:self-hosted
Elgg vs Mattermost: at a glance
What is Elgg?
Elgg ships paired 7.1.2 and 6.3.9 patches: both branches stay in maintenance mode.
Elgg is a mature open-source PHP framework for self-hosted community platforms. The 7.0 major shipped in May 2026, and 7.1.0 in September added invitation-only groups, header images for generic entities and a MariaDB recommendation. 7.1.1 fixed profile access display and trash recovery, and on October 21 Elgg shipped 7.1.2 and 6.3.9 together, both with no release notes beyond the contributor list.
What is Mattermost?
Mattermost v12 puts user-scoped permissions, private models and audit trails on every agent action.
Mattermost's feed spent five weeks on security and resilience essays; the last product release was v11.11's data-spillage exposure report. v12 changes that: agents now act with the requesting user's access rather than a shared service account, can run on private models, and leave an audit trail per action. The announcement is short on detail, but the pitch is clear and aimed at defense and regulated buyers.
Elgg vs Mattermost: editorial side-by-side
Elgg
5.0COLLAB
Elgg ships paired 7.1.2 and 6.3.9 patches: both branches stay in maintenance mode.
◆ Current state
Elgg is a mature open-source PHP framework for self-hosted community platforms. The 7.0 major shipped in May 2026, and 7.1.0 in September added invitation-only groups, header images for generic entities and a MariaDB recommendation. 7.1.1 fixed profile access display and trash recovery, and on October 21 Elgg shipped 7.1.2 and 6.3.9 together, both with no release notes beyond the contributor list.
◆ Where it's heading
Elgg follows a predictable cadence: a feature minor, then single-digit patch releases, with paired backports on the 6.3 branch. The 7.1 features centred on finer access control and generic entity handling, and the follow-up patches stay in those areas. The project favours stability over pace.
◆ Prediction
More 7.1.x patches are likely, released in pairs with 6.3.x as happened again today. The entries give no signal about what a 7.2 would contain.
Mattermost
6.3COLLAB
Mattermost v12 puts user-scoped permissions, private models and audit trails on every agent action.
◆ Current state
Mattermost's feed spent five weeks on security and resilience essays; the last product release was v11.11's data-spillage exposure report. v12 changes that: agents now act with the requesting user's access rather than a shared service account, can run on private models, and leave an audit trail per action. The announcement is short on detail, but the pitch is clear and aimed at defense and regulated buyers.
◆ Where it's heading
The essays on zero trust, data spillage and out-of-band response were building toward this. Mattermost is positioning its AI agents as governed, mission-safe tools inside its classified-environment niche rather than competing on agent breadth. The in-house Matty Code agent shows it also uses agents to build the product itself.
◆ Prediction
Expect v12.x follow-ups that publish admin controls and audit-log detail for agent actions, plus more deployment-focused content aimed at defense buyers.
Alternatives to Elgg 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 Elgg or Mattermost.
GitHub
GitHub adds GPT-6.1 Terra to Copilot and makes assisted permissions GA across CLI, app and VS Code.
Readwise
Readwise splits its bundle into Reader-only and Highlights-only plans and renames its first app.
Nuclino
Nuclino's October drop turns to mobile and content blocks after three MCP-focused releases.
Joplin
Joplin Cloud AI runs on Mistral's EU endpoint with zero data retention.
AFFiNE
AFFiNE's canaries stay on upkeep: a Swift Collections bump follows CVE and migration fixes.
See all Elgg alternatives → · See all Mattermost alternatives →
Recent activity from Elgg and Mattermost
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 4d agoMattermostMattermost v12: Agents Are Doing the Work. Now Control What They Can See. ⚡
- 6d agoElggElgg 7.1.2: small patch, paired with 6.3.9, no notes
- 6d agoElggElgg 6.3.9: paired backport patch for the 6.x line, no notes
- 13d agoMattermostWhere the Response Team Talks After the Gateway Falls
- 18d agoElggElgg 7.1.1 fixes profile access display, trash recovery and theming
- 21d agoMattermostOur Newest Top Contributor Is an AI Agent: 4 Months of Matty Code
- 21d agoMattermostThe Conversation Is the Operation: Defending Collaboration Infrastructure Like an Intelligence Asset
- 21d agoMattermostTwo Outages, One Vendor, One Lesson in Resilience Planning
- 1mo agoMattermostOperational Resilience: Building Trust From Devices to Decisions
- 1mo agoElggElgg 7.1.0: invitation-only groups and MariaDB becomes the recommended database
- 2mo agoElggElgg 7.0.5
- 2mo agoElggElgg 6.3.8
Frequently asked questions
What is the difference between Elgg and Mattermost?
Both compete on the same themes — self-hosted — within Collab. Mattermost 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 Elgg better than Mattermost?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Mattermost 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 Collab products to evaluate alongside.
What are the best alternatives to Elgg?
Top Elgg alternatives in Collab are ranked by recent ship velocity. Browse the "Elgg alternatives" section above for the current picks, or visit /alternatives/elgg 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.