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Comparison · Collab
Mattermost vs Smartsheet
A side-by-side editorial comparison of Mattermost and Smartsheet — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:collaboration
Mattermost vs Smartsheet: at a glance
What is Mattermost?
Every v11 release pushes ABAC further out; the blog sells the air-gap story around it.
Mattermost ships a v11.x release roughly monthly, and each one extends attribute-based access control another layer: v11.9 reached channel-level policies and ranked attributes, v11.10 adds team-level ABAC membership and native user attributes. Between releases the feed is marketing content aimed at defense, federal, and other air-gapped buyers. The product work and the publishing calendar are pulling in the same direction.
What is Smartsheet?
Smartsheet introduces a Contributor seat tier; rest of the stream is portal nav.
Almost everything in Smartsheet's tracked stream is portal navigation — Community link, Learning Center, customer stories, archived release notes index. The one substantive entry is the Contributor seat reaching general availability on April 30, positioned as 'best-in-class collaboration value' — i.e., a new pricing tier for users who participate in but don't author work.
Mattermost vs Smartsheet: editorial side-by-side
Mattermost
5.0COLLAB
Every v11 release pushes ABAC further out; the blog sells the air-gap story around it.
◆ Current state
Mattermost ships a v11.x release roughly monthly, and each one extends attribute-based access control another layer: v11.9 reached channel-level policies and ranked attributes, v11.10 adds team-level ABAC membership and native user attributes. Between releases the feed is marketing content aimed at defense, federal, and other air-gapped buyers. The product work and the publishing calendar are pulling in the same direction.
◆ Where it's heading
ABAC is being built out as the organizing primitive — first channels, now teams, with user attributes moving from an integration concern into the platform itself. The surrounding posts on agentic AI in disconnected environments read as demand-shaping for the AI features shipping in the same releases. Expect the two lines to converge on running agents inside a network that cannot call out.
◆ Prediction
The next v11 release should extend ABAC to a further scope or add policy administration tooling, and the agent features will keep being framed around operating without external model APIs.
Smartsheet
3.8COLLABPM
Smartsheet introduces a Contributor seat tier; rest of the stream is portal nav.
◆ Current state
Almost everything in Smartsheet's tracked stream is portal navigation — Community link, Learning Center, customer stories, archived release notes index. The one substantive entry is the Contributor seat reaching general availability on April 30, positioned as 'best-in-class collaboration value' — i.e., a new pricing tier for users who participate in but don't author work.
◆ Where it's heading
Smartsheet is using packaging, not features, as its visible motion right now: a Contributor seat sits below full-editor tiers and is built to expand seat counts inside accounts without forcing every collaborator onto a paid editor license. The rest of the stream offers no product-feature signal worth interpreting.
◆ Prediction
Expect Contributor-seat positioning to drive a B2B-style up-sell motion (more activated seats, eventually more upgrades) and follow-on packaging refinement around external collaborators and viewers. Real product moves are likely happening but not visible in this stream.
Alternatives to Mattermost and Smartsheet
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 Smartsheet.
GitHub
Security and governance controls catch up to the Copilot build-out
Elgg
A social-networking engine in careful maintenance across two supported branches.
NetNewsWire
7.1.3 ships on the Mac, closing a release spent almost entirely on rebuilding Feedly sync.
HumHub
HumHub's public feed carries only betas, and 1.19's is still about surviving the upgrade.
Hive
Hive keeps tightening the same three seams: planned time, admin control, and AI review scope
See all Mattermost alternatives → · See all Smartsheet alternatives →
Recent activity from Mattermost and Smartsheet
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1d agoMattermostCan Agentic AI Work in Air-Gapped Environments?
- 5d agoMattermostMattermost v11.10: Team ABAC Membership, Native User Attributes in ABAC, AI Agent Enhancements & More
- 9d agoMattermostWhat Is an Air-Gapped Network?
- 12d agoMattermostYour Teams Are Already Translating Sensitive Data. The Question Is Where It Goes.
- 16d agoMattermostThe Collaboration Gap in Zero Trust: Why Sovereignty Can’t Stop at the Perimeter
- 21d agoMattermostAgentic AI for Mission-Critical Operations: What Enterprise Leaders Need to Know
- 3mo agoSmartsheetContributor seat, now generally available! ⚡
- 3mo agoSmartsheetContributor seat, now generally available!
- 4mo agoSmartsheetFeedback portal link (not a release)
- 4mo agoSmartsheetBe inspired.
- 4mo agoSmartsheetLearning Center portal link (not a release)
- 4mo agoSmartsheetArchived release notes index page
Frequently asked questions
What is the difference between Mattermost and Smartsheet?
Both compete on the same themes — collaboration — within Collab. Mattermost is currently shipping more aggressively (velocity 5.0 vs 3.8), with 0 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 Smartsheet?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Mattermost is currently shipping more aggressively (velocity 5.0 vs 3.8), with 0 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 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.