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Comparison · Collab
Immich vs Mattermost
A side-by-side editorial comparison of Immich and Mattermost — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:self-hosted
Immich vs Mattermost: at a glance
What is Immich?
Immich's 3.4 candidate brings passkeys to the phone app
Immich is in its v3.4 release-candidate cycle. rc.1 added passkey sign-in, built-in backups through FUTO Backups (restic-based), JPEG XL support and mobile tags, with a batch of security fixes; rc.2 was bug fixes only. rc.3 on 6 November extends passkeys to the mobile apps and improves the backup integration.
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.
Immich vs Mattermost: editorial side-by-side
Immich
5.0COLLAB
Immich's 3.4 candidate brings passkeys to the phone app
◆ Current state
Immich is in its v3.4 release-candidate cycle. rc.1 added passkey sign-in, built-in backups through FUTO Backups (restic-based), JPEG XL support and mobile tags, with a batch of security fixes; rc.2 was bug fixes only. rc.3 on 6 November extends passkeys to the mobile apps and improves the backup integration.
◆ Where it's heading
Each Immich cycle runs three or four candidates in a few weeks, and 3.4 is adding the account and data-safety features a self-hosted photo library needs before households rely on it. Passkeys reaching mobile completes the sign-in change across clients.
◆ Prediction
A stable v3.4.0 is the likely next entry, with the draft release notes already published.
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 Immich 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 Immich 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 Immich alternatives → · See all Mattermost alternatives →
Recent activity from Immich 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
- 7d agoImmichv3.4 RC3 brings passkeys to mobile and refines backups
- 9d agoImmichv3.4 RC2 is bug fixes only ahead of the stable release
- 9d agoMattermostMattermost v12 adds device and channel attributes to access policy
- 14d agoImmichv3.4 RC adds passkeys, built-in backups and JPEG XL
- 18d agoMattermostMattermost v12 Cross Guard: managed cross-domain transfers
- 21d agoMattermostMattermost v12: Agents Are Doing the Work. Now Control What They Can See. ⚡
- 1mo agoImmichv3.3 RC2 refines person sharing before release
- 1mo agoImmichv3.3 RC1 continues person-sharing work
- 1mo agoImmichv3.3 RC adds people management and TensorRT-RTX
Frequently asked questions
What is the difference between Immich 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 Immich 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 Immich?
Top Immich alternatives in Collab are ranked by recent ship velocity. Browse the "Immich alternatives" section above for the current picks, or visit /alternatives/immich 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.