Interact
Interact opens its intranet to outside AI assistants and uses Claude to attack its own platform.
Comparison · Collab
Smartsheet vs Mattermost
A side-by-side editorial comparison of Smartsheet and Mattermost — release velocity, themes, recent moves, and the top alternatives to consider.
Smartsheet vs Mattermost: at a glance
What is Smartsheet?
Smartsheet becomes where plans drafted in Claude Sheets get executed.
Smartsheet is rebuilding its core around table view: a table view report builder, Enterprise sheets above 500,000 cells, reports above 1,500,000 rows and a new Gantt view with critical path. On November 10 it added a beta that sends a plan started in Claude Sheets into Smartsheet, ready for a team to act on. Earlier it retired card view for Enterprise and limited AI to Table, Board and Timeline views.
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.
Smartsheet vs Mattermost: editorial side-by-side
Smartsheet
5.0COLLABPM
Smartsheet becomes where plans drafted in Claude Sheets get executed.
◆ Current state
Smartsheet is rebuilding its core around table view: a table view report builder, Enterprise sheets above 500,000 cells, reports above 1,500,000 rows and a new Gantt view with critical path. On November 10 it added a beta that sends a plan started in Claude Sheets into Smartsheet, ready for a team to act on. Earlier it retired card view for Enterprise and limited AI to Table, Board and Timeline views.
◆ Where it's heading
Two tracks are visible. The core product is consolidating onto fewer, larger views, and Smartsheet is positioning itself as the execution layer for work drafted elsewhere, starting with an AI spreadsheet. Imports from SharePoint and Workday sync point the same way: pull data in, run the work in Smartsheet.
◆ Prediction
Expect the Claude Sheets handoff to leave beta and similar send-to paths from other AI assistants, since the release frames Smartsheet as the destination rather than the drafting tool.
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 Smartsheet 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 Smartsheet 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 Smartsheet alternatives → · See all Mattermost alternatives →
Recent activity from Smartsheet 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
- 5d agoSmartsheetUse the Jira Smartsheet Connector with Jira v11.x
- 5d agoSmartsheetSort, filter, and find workspaces in Browse
- 5d agoSmartsheetSmartsheet adds bidirectional sync with Dynamics 365
- 5d agoSmartsheetSend to Smartsheet from Claude Sheets, now available in beta!
- 9d agoMattermostMattermost v12 adds device and channel attributes to access policy
- 11d agoSmartsheetWork with large-scale sheets and reports in table view
- 11d agoSmartsheetVisualize your project schedule in the new Gantt view
- 18d agoMattermostMattermost v12 Cross Guard: managed cross-domain transfers
- 21d agoMattermostMattermost v12: Agents Are Doing the Work. Now Control What They Can See. ⚡
Frequently asked questions
What is the difference between Smartsheet and Mattermost?
They serve adjacent needs but don't currently overlap on shipped themes. 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 Smartsheet 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 Smartsheet?
Top Smartsheet alternatives in Collab are ranked by recent ship velocity. Browse the "Smartsheet alternatives" section above for the current picks, or visit /alternatives/smartsheet 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.