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Comparison · Collab
Mattermost vs Nextcloud
A side-by-side editorial comparison of Mattermost and Nextcloud — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:self-hosted
Mattermost vs Nextcloud: 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 Nextcloud?
Nextcloud's November patches lean on preview speed and sharing fixes across three branches.
Nextcloud released 35.0.3, 34.0.6 and 33.0.11 on November 12, a month after the previous patch round. 35.0.3 is the largest, with about a dozen calendar and contacts sync fixes, faster cold preview generation, a cached mimetype table, share expiration times that are kept, share-by-mail passwords sent readable instead of hashed, and sharing with remote owners. The two older lines get the same sharing, encryption and audit-log backports.
Mattermost vs Nextcloud: 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.
Nextcloud
5.0COLLAB
Nextcloud's November patches lean on preview speed and sharing fixes across three branches.
◆ Current state
Nextcloud released 35.0.3, 34.0.6 and 33.0.11 on November 12, a month after the previous patch round. 35.0.3 is the largest, with about a dozen calendar and contacts sync fixes, faster cold preview generation, a cached mimetype table, share expiration times that are kept, share-by-mail passwords sent readable instead of hashed, and sharing with remote owners. The two older lines get the same sharing, encryption and audit-log backports.
◆ Where it's heading
Since the 35.0 major in September, Nextcloud has returned to its monthly three-branch patch rhythm. The fixes concentrate on sharing correctness, CalDAV/CardDAV sync and performance on large instances, with few new features. The 35 line receives small additions, such as remote share owners, that the older branches do not.
◆ Prediction
The next patch round should land in mid-December on the same three branches; the entries do not show when 36 development will surface.
Alternatives to Mattermost and Nextcloud
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 Nextcloud.
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.
Teable
Teable adds Get Started guides to templates and shareable artifacts from the CLI.
See all Mattermost alternatives → · See all Nextcloud alternatives →
Recent activity from Mattermost and Nextcloud
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 23h agoMattermostMattermost v12.1: Control That Goes Beyond On and Off
- 2d agoNextcloudNextcloud 34.0.6: sharing, encryption and upload backports
- 2d agoNextcloudNextcloud 33.0.11: sharing and legacy DAV auth backports
- 2d agoNextcloudNextcloud 35.0.3: faster previews, sync and sharing fixes
- 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. ⚡
- 1mo agoNextcloudNextcloud 35.0.2: webhook metadata, sharing fixes, report API
- 1mo agoNextcloudNextcloud 34.0.5: share CSRF fix, log redaction, sharing backports
- 1mo agoNextcloudNextcloud 33.0.10: share CSRF fix and sharing backports
Frequently asked questions
What is the difference between Mattermost and Nextcloud?
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 Nextcloud?
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 Nextcloud?
Top Nextcloud alternatives in Collab are ranked by recent ship velocity. Browse the "Nextcloud alternatives" section above for the current picks, or visit /alternatives/nextcloud for the full list with editorial commentary on each.