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Comparison · Collab
Mattermost vs Memos
A side-by-side editorial comparison of Mattermost and Memos — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:self-hosted
Mattermost vs Memos: at a glance
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.
What is Memos?
Memos adopts calendar versions and rebuilds writing around one block editor.
Memos has moved to calendar versioning, with 26.10 candidates following 0.31 and versions now written YY.MM.N. 26.10.0-rc.2 replaces the editor with one block editor shared by writing and reading, and turns the instance-wide memo length and upload caps into ordered per-user usage limits that also cover memo count and total storage. rc.1 added editor suggestions and transcription of existing audio attachments, and Spaces now follow the user across Timeline, Calendar, Map and Attachments.
Mattermost vs Memos: editorial side-by-side
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.
Memos
5.0COLLAB
Memos adopts calendar versions and rebuilds writing around one block editor.
◆ Current state
Memos has moved to calendar versioning, with 26.10 candidates following 0.31 and versions now written YY.MM.N. 26.10.0-rc.2 replaces the editor with one block editor shared by writing and reading, and turns the instance-wide memo length and upload caps into ordered per-user usage limits that also cover memo count and total storage. rc.1 added editor suggestions and transcription of existing audio attachments, and Spaces now follow the user across Timeline, Calendar, Map and Attachments.
◆ Where it's heading
Spaces made Memos multi-user, and usage limits are what an administrator needs once several people share an instance. The candidate keeps spending compatibility to get there: upgrading signs everyone out because access tokens are bound to the password, and the old size settings are removed without migration, leaving defaults of 8 KiB per memo and 32 MiB per file. The HTTP layer also moved to the Go standard library, with operators asked to report reverse-proxy differences.
◆ Prediction
Expect 26.10.0 stable with those upgrade notes intact. Reverse-proxy reports against the new HTTP layer are the likeliest cause of another candidate.
Alternatives to Mattermost and Memos
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 Memos.
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 Mattermost alternatives → · See all Memos alternatives →
Recent activity from Mattermost and Memos
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
- 9d agoMattermostMattermost v12 adds device and channel attributes to access policy
- 18d agoMemosOne block editor, per-user usage limits and calendar versions
- 18d agoMattermostMattermost v12 Cross Guard: managed cross-domain transfers
- 21d agoMattermostMattermost v12: Agents Are Doing the Work. Now Control What They Can See. ⚡
- 1mo agoMemosEditor suggestions, audio transcription, unified browsing
- 2mo agoMemosCalendar and Map pages, moving memos between Spaces
- 2mo agoMemosCollaborative Spaces, author-owned memos, and Saved Views ⚡
- 3mo agoMemosEmbedded MCP endpoint, live SSE updates, and revocable share links ⚡
- 3mo agoMemosMemos Web Clipper and a redesigned memo detail rail
Frequently asked questions
What is the difference between Mattermost and Memos?
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 Mattermost better than Memos?
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 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 Memos?
Top Memos alternatives in Collab are ranked by recent ship velocity. Browse the "Memos alternatives" section above for the current picks, or visit /alternatives/memos for the full list with editorial commentary on each.