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Comparison · Collab
Flame vs Mattermost
A side-by-side editorial comparison of Flame and Mattermost — release velocity, themes, recent moves, and the top alternatives to consider.
Flame vs Mattermost: at a glance
What is Flame?
Self-hosted dashboard that finished its feature arc and stopped shipping in 2023.
Flame is a self-hosted startpage for homelab services — app tiles, bookmarks, weather, and a search bar. The feature set it set out to build was finished across 2021 and 2022: custom app descriptions, Docker secrets support, a secondary search provider, and a custom theme editor. The most recent release in this feed is v2.3.1 from July 2023, and it is entirely bug fixes.
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.
Flame vs Mattermost: editorial side-by-side
Flame
0.0COLLAB
Self-hosted dashboard that finished its feature arc and stopped shipping in 2023.
◆ Current state
Flame is a self-hosted startpage for homelab services — app tiles, bookmarks, weather, and a search bar. The feature set it set out to build was finished across 2021 and 2022: custom app descriptions, Docker secrets support, a secondary search provider, and a custom theme editor. The most recent release in this feed is v2.3.1 from July 2023, and it is entirely bug fixes.
◆ Where it's heading
The arc reads as a project reaching completion rather than one under active development. Later releases shifted from adding capability to correcting the edges of what already existed — search-provider interactions, iOS input rendering, theme editor field sizes, label wording. There has been nothing since.
◆ Prediction
Nothing in these entries suggests further releases; anyone deploying Flame should treat the current version as the final one unless the project resumes.
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.
Alternatives to Flame 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 Flame or Mattermost.
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 Flame alternatives → · See all Mattermost alternatives →
Recent activity from Flame and Mattermost
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
- 3y agoFlameBug fixes for local search, iOS input styling, and theme editor
- 4y agoFlameCustom theme editor and secondary search provider
- 4y agoFlameIn-app location detection and tightened file permissions
- 4y agoFlameLocal search covers app descriptions; background task tuning
- 4y agoFlameCustom app descriptions and a cluster deployment fix
- 4y agoFlameDocker secrets support
Frequently asked questions
What is the difference between Flame and Mattermost?
They serve adjacent needs but don't currently overlap on shipped themes. Mattermost is currently shipping more aggressively (velocity 5.0 vs 0.0), 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 Flame better than Mattermost?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Mattermost is currently shipping more aggressively (velocity 5.0 vs 0.0), 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 Flame?
Top Flame alternatives in Collab are ranked by recent ship velocity. Browse the "Flame alternatives" section above for the current picks, or visit /alternatives/flame-dashboard 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.