Interact
Interact opens its intranet to outside AI assistants and uses Claude to attack its own platform.
Comparison · Collab
Smartsheet vs Slack
A side-by-side editorial comparison of Smartsheet and Slack — release velocity, themes, recent moves, and the top alternatives to consider.
Smartsheet vs Slack: 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 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.
Smartsheet vs Slack: 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.
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.
Smartsheet alternatives
Other Collab products tracked by Sparkpulse, ranked by recent ship velocity. Tap any card for the full editorial trajectory or compare directly with Smartsheet.
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 Smartsheet and Slack
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 4d agoSlackBring your A2A agents to Slack ⚡
- 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!
- 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
- 11d agoSmartsheetWork with large-scale sheets and reports in table view
- 11d agoSmartsheetVisualize your project schedule in the new Gantt view
- 12d agoSlackUpdated low-usage submission criteria for Slack Marketplace apps
- 15d agoSlackSlack CLI 4.12.0, the fourth CLI release in October
Frequently asked questions
What is the difference between Smartsheet and Slack?
They serve adjacent needs but don't currently overlap on shipped themes. Slack 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 Slack?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Slack 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 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.