Interact
Interact opens its intranet to outside AI assistants and uses Claude to attack its own platform.
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 v12.1 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.
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 v12.1 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 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.
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 Docspell alternatives → · See all Mattermost alternatives →
Recent activity from Docspell 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
- 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. ⚡
- 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
- 4y 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.