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Comparison · Collab
Docspell vs Mattermost
A side-by-side editorial comparison of Docspell and Mattermost — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:self-hosted
Docspell vs Mattermost: at a glance
What is Docspell?
Docspell's tagged releases stopped in 2025; the upload API only moves on the nightly.
No numbered release has landed since 0.43.0, which was itself a fixes-and-dependencies close-out. Work continues on the rolling nightly tag, where the current build adds optional priority to upload metadata, returns file keys and job ids from the upload API, and exposes a secured endpoint to fetch a file by key. That is real API surface, but it reaches only users willing to run nightly builds.
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.
Docspell vs Mattermost: editorial side-by-side
Docspell
2.5COLLAB
Docspell's tagged releases stopped in 2025; the upload API only moves on the nightly.
◆ Current state
No numbered release has landed since 0.43.0, which was itself a fixes-and-dependencies close-out. Work continues on the rolling nightly tag, where the current build adds optional priority to upload metadata, returns file keys and job ids from the upload API, and exposes a secured endpoint to fetch a file by key. That is real API surface, but it reaches only users willing to run nightly builds.
◆ Where it's heading
The project is drifting toward nightly-only distribution: contributors keep landing work, maintainers keep not cutting tags. The newest additions cluster on programmatic ingestion — a caller submitting a document, then retrieving it by key — which points at Docspell being shaped as a component other systems feed rather than a standalone archive.
◆ Prediction
The upload-API work in #3338 is the most likely core of a next tagged release if one is cut. Whether the tagged line resumes at all is not readable from these notes.
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 Docspell 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 Docspell or Mattermost.
SiYuan
SiYuan 3.8.9 reaches RC, adding AI-agent extraction of images embedded in PDFs.
KACE
KACE extends its PHP2SHELL fix to the SDA deployment appliance, six days after disclosure.
AFFiNE
AFFiNE's canaries stay on upkeep: a Swift Collections bump follows CVE and migration fixes.
Teable
Teable's Structured Query v2 now reports across multi-hop relations, with a strict mode against SQL.
Readwise
Readwise splits its bundle into Reader-only and Highlights-only plans and renames its first app.
See all Docspell alternatives → · See all Mattermost alternatives →
Recent activity from Docspell and Mattermost
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 3d agoMattermostMattermost v12 Cross Guard: managed cross-domain transfers
- 6d agoMattermostMattermost v12: Agents Are Doing the Work. Now Control What They Can See. ⚡
- 15d agoMattermostWhere the Response Team Talks After the Gateway Falls
- 23d agoMattermostThe Conversation Is the Operation: Defending Collaboration Infrastructure Like an Intelligence Asset
- 23d agoMattermostTwo Outages, One Vendor, One Lesson in Resilience Planning
- 23d agoMattermostOur Newest Top Contributor Is an AI Agent: 4 Months of Matty Code
- 2mo agoDocspellNightly adds upload priority and a file-key download endpoint
- 1y agoDocspell0.43.0 closes the tagged history with fixes and maintenance
- 2y agoDocspell0.42.0 hardens the Nix module and adds vertical Japanese OCR
- 2y agoDocspell0.41.0 swaps the HTTP stack from blaze to ember
- 3y agoDocspell0.40.0 gathers fixes, a Nix flake, and Ukrainian support
- 3y agoDocspell0.39.0 lets OIDC and local accounts share an identity
Frequently asked questions
What is the difference between Docspell and Mattermost?
Both compete on the same themes — self-hosted — within Collab. Mattermost is currently shipping more aggressively (velocity 6.3 vs 2.5), 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 Docspell 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 2.5), 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 Docspell?
Top Docspell alternatives in Collab are ranked by recent ship velocity. Browse the "Docspell alternatives" section above for the current picks, or visit /alternatives/docspell 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.