Interact
Interact opens its intranet to outside AI assistants and uses Claude to attack its own platform.
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 6.3.10 raises the PHP floor to 8.2 as 7.1.3 patches access checks.
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. On November 5 Elgg shipped 7.1.3, fixing an access-collection permission check and a trash language key, and 6.3.10, which raises the minimum PHP version to 8.2.
What is Mattermost?
Mattermost v12.1 puts bots and burn-after-reading messages under the same access rules.
Mattermost v12 shipped in parts: agents limited to the requesting user's access, Cross Guard for transfers across security domains, and user, device and channel attributes in access policy. A November 9 partnership pairs v12 with Arqit's quantum-safe device trust. v12.1 on November 13 extends attribute-based access control to bot accounts and to Burn-on-Read permissions, and Desktop v6.4 fixes Boards on subpath deployments.
Elgg vs Mattermost: editorial side-by-side
Elgg
5.0COLLAB
Elgg 6.3.10 raises the PHP floor to 8.2 as 7.1.3 patches access checks.
◆ 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. On November 5 Elgg shipped 7.1.3, fixing an access-collection permission check and a trash language key, and 6.3.10, which raises the minimum PHP version to 8.2.
◆ Where it's heading
Both branches remain in maintenance, but the PHP 8.2 requirement on the 6.x line is a nudge for older installs to modernise or move to 7.x.
◆ Prediction
Paired 7.1.x and 6.3.x patches should continue every two to three weeks; the entries give no sign of a 7.2 feature release yet.
Mattermost
6.3COLLAB
Mattermost v12.1 puts bots and burn-after-reading messages under the same access rules.
◆ Current state
Mattermost v12 shipped in parts: agents limited to the requesting user's access, Cross Guard for transfers across security domains, and user, device and channel attributes in access policy. A November 9 partnership pairs v12 with Arqit's quantum-safe device trust. v12.1 on November 13 extends attribute-based access control to bot accounts and to Burn-on-Read permissions, and Desktop v6.4 fixes Boards on subpath deployments.
◆ Where it's heading
Each release closes another gap in one policy model for who and what can see a message: people, devices, channels, and now automation accounts and ephemeral messages. The audience stays defence and regulated buyers, and point releases are filling in v12 rather than starting new lines.
◆ Prediction
Further v12.x releases likely apply the same attribute rules to more objects, such as files, plugins or AI agent actions, following the pattern of v12.1.
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.
Nextcloud
Nextcloud's November patches lean on preview speed and sharing fixes across three branches.
Asana
Asana lets Division admins run their own custom roles, on top Enterprise plans only.
Double
Double turns a recorded Chrome session into an agent that repeats the task.
SiYuan
SiYuan 3.8.11 alphas add freeform mind maps and plugin snapshots right after 3.8.10.
Hive
Hive turns reporting into a planning tool: shared inputs, grouped values, per-person drill-downs.
See all Elgg alternatives → · See all Mattermost alternatives →
Recent activity from Elgg and Mattermost
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 23h agoMattermostMattermost v12.1: Control That Goes Beyond On and Off
- 4d agoMattermostYour MFA Isn't Phishing-Resistant. Here's What Is, and What the Deployment Decision Actually Involves
- 4d agoMattermostMattermost v12 pairs with Arqit for quantum-safe edge deployments
- 8d agoElggElgg 7.1.3
- 9d agoElggElgg 6.3.10
- 9d agoMattermostMattermost v12 adds device and channel attributes to access policy
- 18d agoMattermostMattermost v12 Cross Guard: managed cross-domain transfers
- 21d agoMattermostMattermost v12: Agents Are Doing the Work. Now Control What They Can See. ⚡
- 24d agoElggElgg 7.1.2: small patch, paired with 6.3.9, no notes
- 24d agoElggElgg 6.3.9: paired backport patch for the 6.x line, no notes
- 1mo agoElggElgg 7.1.1 fixes profile access display, trash recovery and theming
- 2mo agoElggElgg 7.1.0: invitation-only groups, MariaDB now recommended
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.