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Comparison · Collab
EGroupware vs Mattermost
A side-by-side editorial comparison of EGroupware and Mattermost — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:self-hosted
EGroupware vs Mattermost: at a glance
What is EGroupware?
EGroupware's November release pairs critical security fixes with full Stalwart mail-server support.
EGroupware ships a 26.x release every week or two, and almost every one carries security fixes; the 12 November release is flagged with multiple critical ones. That release also adds full Stalwart v1.0 support with account syncing, ends all other sessions when a password is changed or reset, and makes printing long lists about 10x faster. The 23.1 branch closed on 21 October, so 26 is now the only supported line.
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.
EGroupware vs Mattermost: editorial side-by-side
EGroupware
5.0COLLAB
EGroupware's November release pairs critical security fixes with full Stalwart mail-server support.
◆ Current state
EGroupware ships a 26.x release every week or two, and almost every one carries security fixes; the 12 November release is flagged with multiple critical ones. That release also adds full Stalwart v1.0 support with account syncing, ends all other sessions when a password is changed or reset, and makes printing long lists about 10x faster. The 23.1 branch closed on 21 October, so 26 is now the only supported line.
◆ Where it's heading
Two threads run through the autumn releases: a steady stream of security patches and continued mail work (unseen mail on top, large-recipient warnings, invoice OCR, now Stalwart). The UI is also being modernised, with edit dialogs moving off tables to responsive layouts. The Stalwart integration points to EGroupware pairing itself with a specific self-hosted mail server rather than staying a generic IMAP client.
◆ Prediction
Expect the next 26.x release within two weeks with more security fixes, and further Stalwart-related mail features following the v1.0 integration.
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 EGroupware 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 EGroupware 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 EGroupware alternatives → · See all Mattermost alternatives →
Recent activity from EGroupware and Mattermost
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 23h agoMattermostMattermost v12.1: Control That Goes Beyond On and Off
- 1d agoEGroupwareCritical security fixes plus full Stalwart v1.0 mail support
- 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
- 9d agoMattermostMattermost v12 adds device and channel attributes to access policy
- 14d agoEGroupware26.10.20261030 fixes a critical flaw and TinyMCE issue
- 18d agoMattermostMattermost v12 Cross Guard: managed cross-domain transfers
- 21d agoMattermostMattermost v12: Agents Are Doing the Work. Now Control What They Can See. ⚡
- 23d agoEGroupwareFinal 23.1 release ends the branch with security fixes
- 23d agoEGroupware26.10.20261021 updates PHP and fixes admin actions
- 28d agoEGroupwareMemory-leak fixes and unseen-mail-on-top option
- 29d agoEGroupwareSecurity fixes plus large-recipient warning and invoice OCR
Frequently asked questions
What is the difference between EGroupware 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 EGroupware 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 EGroupware?
Top EGroupware alternatives in Collab are ranked by recent ship velocity. Browse the "EGroupware alternatives" section above for the current picks, or visit /alternatives/egroupware 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.