Interact
Interact opens its intranet to outside AI assistants and uses Claude to attack its own platform.
Comparison · Collab
HumHub vs Slack
A side-by-side editorial comparison of HumHub and Slack — release velocity, themes, recent moves, and the top alternatives to consider.
HumHub vs Slack: at a glance
What is HumHub?
HumHub 1.19 has left beta, and its first patches are already carrying security fixes.
The 1.19 cycle is out of beta. beta.3 in September carried security fixes, keyboard-accessibility work and leftover Bootstrap cleanup, and the v1.19.1 entry on October 26 is a changelog update noting security fixes, enhancements and bug fixes. HumHub's GitHub releases show 1.19.0 stable on October 12 and 1.19.3 on October 27, neither of which appears in this feed.
What is Slack?
Slack now hosts any A2A agent without Slack-specific code.
Slack's developer channel is almost all agent plumbing. On 10 November Slack became an A2A (Agent2Agent) client: a team hosts its own agent, publishes an Agent Card, and Slack calls it when people talk to it, with no request URL, event handling or Slack-specific logic. This follows Slackbot skills managed through Web API methods, a Slack CLI that points coding agents to the Slack MCP server, and a new requirement that Work Objects embeds allow the slack-mcps.com frame ancestor.
HumHub vs Slack: editorial side-by-side
HumHub
2.5COLLAB
HumHub 1.19 has left beta, and its first patches are already carrying security fixes.
◆ Current state
The 1.19 cycle is out of beta. beta.3 in September carried security fixes, keyboard-accessibility work and leftover Bootstrap cleanup, and the v1.19.1 entry on October 26 is a changelog update noting security fixes, enhancements and bug fixes. HumHub's GitHub releases show 1.19.0 stable on October 12 and 1.19.3 on October 27, neither of which appears in this feed.
◆ Where it's heading
The betas were spent making the upgrade survivable, and the post-stable patches show what that missed: the 1.19.3 changelog repairs activity types that reappeared in e-mail summaries after the update, and a cron failure that could repeat summary mail. Accessibility is the one forward-looking thread, with visible focus and corrected tab order across cards, dropdowns and search.
◆ Prediction
1.19.4 is already listed as unreleased in the project changelog, so another fix-led patch is close. 1.18.7 shipped the same day as 1.19.2, so expect security fixes to keep reaching both lines.
Slack
6.3COMMSCOLLAB
Slack now hosts any A2A agent without Slack-specific code.
◆ Current state
Slack's developer channel is almost all agent plumbing. On 10 November Slack became an A2A (Agent2Agent) client: a team hosts its own agent, publishes an Agent Card, and Slack calls it when people talk to it, with no request URL, event handling or Slack-specific logic. This follows Slackbot skills managed through Web API methods, a Slack CLI that points coding agents to the Slack MCP server, and a new requirement that Work Objects embeds allow the slack-mcps.com frame ancestor.
◆ Where it's heading
Slack is lowering the cost of putting outside agents in front of its users: first skills as code, then MCP pointers for coding agents, now a standard protocol in place of the Slack app model for agents. The platform is positioning itself as the place where agents built anywhere meet the people who use them.
◆ Prediction
Expect more A2A follow-ups, such as agents appearing in Slackbot or skills surfaces and richer Agent Card features, given how fast the agent releases have stacked up since October.
HumHub alternatives
Other Collab products tracked by Sparkpulse, ranked by recent ship velocity. Tap any card for the full editorial trajectory or compare directly with HumHub.
Nextcloud
Nextcloud's November patches lean on preview speed and sharing fixes across three branches.
Mattermost
Mattermost v12.1 puts bots and burn-after-reading messages under the same access rules.
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.
Slack alternatives
Other Collab products tracked by Sparkpulse, ranked by recent ship velocity. Tap any card for the full editorial trajectory or compare directly with Slack.
Rspamd
Rspamd 4.3 fixes SPF evaluation order and rejects weak DKIM keys, with results that change.
Twilio
Twilio's voice AI stops cutting callers off mid-sentence, using its own turn-taking model.
Salesmsg
Salesmsg adds call-back requests and a one-click Emergency Stop for all outbound texts.
Element
Element 1.12.35 follows the call picture-in-picture release with one desktop storage fix.
Krisp
Krisp moves call transcripts and live captions to cloud transcription in KrispCX 2.84.4.
Misskey
Misskey 2026.11 ships: a leaner start script, and Node.js 22 no longer boots.
Recent activity from HumHub and Slack
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 4d agoSlackBring your A2A agents to Slack ⚡
- 8d agoSlackWork Objects embeds require the slack-mcps.com frame ancestor
- 10d agoSlackSlack CLI 4.13 tells coding agents about Slack MCP and Skills
- 10d agoSlackSlack Skills Plugin installs in Claude Code from its own marketplace
- 12d agoSlackUpdated low-usage submission criteria for Slack Marketplace apps
- 15d agoSlackSlack CLI 4.12.0, the fourth CLI release in October
- 18d agoHumHub1.19.1 patch brings security fixes, enhancements and bug fixes
- 1mo agoHumHubSecurity fixes, keyboard focus and stream loading repairs
- 2mo agoHumHubPrivate-space activity leak and installer 503 handling fixed
- 3mo agoHumHub1.19 upgrade migration and orphaned content fixes
- 10mo agoHumHubLogin screen, theming and validator fixes
- 1y agoHumHubGroup manager options and assorted UI fixes
Frequently asked questions
What is the difference between HumHub and Slack?
They serve adjacent needs but don't currently overlap on shipped themes. Slack is currently shipping more aggressively (velocity 6.3 vs 2.5), 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 HumHub better than Slack?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Slack is currently shipping more aggressively (velocity 6.3 vs 2.5), 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 HumHub?
Top HumHub alternatives in Collab are ranked by recent ship velocity. Browse the "HumHub alternatives" section above for the current picks, or visit /alternatives/humhub for the full list with editorial commentary on each.
What are the best alternatives to Slack?
Top Slack alternatives in Collab are ranked by recent ship velocity. Browse the "Slack alternatives" section above for the current picks, or visit /alternatives/slack for the full list with editorial commentary on each.