Mattermost
Mattermost ships v11.8 compliance controls amid heavy sovereign-defence content
Comparison · Collab
Excalidraw vs Slack
A side-by-side editorial comparison of Excalidraw and Slack — release velocity, themes, recent moves, and the top alternatives to consider.
Excalidraw vs Slack: at a glance
What is Excalidraw?
Excalidraw library cadence is glacial — v0.18 in March 2025, then silence; feed is mostly GitHub-profile noise.
The captured changelog tracks the npm library at github.com/excalidraw/excalidraw, not the hosted app at excalidraw.com. The library has shipped four substantive releases over two-and-a-half years: v0.16.1 (Sep 2023), v0.17.0 (Nov 2023), v0.17.3 (Feb 2024), and v0.18.0 (March 2025). The latest entry is from April 2026 but is a GitHub-profile scraping artifact, not a release. Half the feed is GitHub user-profile pages ('Sorry, something went wrong') that landed instead of release content.
What is Slack?
Slack is turning its app platform into an AI-agent surface — MCP on both ends, richer Block Kit.
The developer-facing changelog is busy and coherent: a Slackbot MCP client and expanded Slack MCP server tools, new Block Kit blocks (data visualization, data table, alert/card/carousel), streaming API updates for AI assistants, and a steady drumbeat of CLI and SDK releases.
Excalidraw vs Slack: editorial side-by-side
Excalidraw
1.3COLLAB
Excalidraw library cadence is glacial — v0.18 in March 2025, then silence; feed is mostly GitHub-profile noise.
◆ Current state
The captured changelog tracks the npm library at github.com/excalidraw/excalidraw, not the hosted app at excalidraw.com. The library has shipped four substantive releases over two-and-a-half years: v0.16.1 (Sep 2023), v0.17.0 (Nov 2023), v0.17.3 (Feb 2024), and v0.18.0 (March 2025). The latest entry is from April 2026 but is a GitHub-profile scraping artifact, not a release. Half the feed is GitHub user-profile pages ('Sorry, something went wrong') that landed instead of release content.
◆ Where it's heading
v0.18.0 was the high-water release — command palette, multiplayer undo/redo, editable element stats, text wrapping, and laser pointer. Since then the library has been quiet for over a year while the hosted app at excalidraw.com presumably continued to evolve through unversioned deploys. This pattern suggests the team has shifted investment toward the SaaS product and integrations, with the open-source library treated as a stable embedding target rather than the frontier of feature work.
◆ Prediction
The library will likely see another minor release rather than going dormant — there is too much downstream embedding (Notion, Obsidian, etc.) for it to fully fall behind the SaaS app — but expect months between releases, not weeks. The feed-source issue is fixable: the crawler should target the GitHub Releases API or RSS, not the HTML release pages and contributor profiles that produce the current noise.
Slack
6.3COMMSCOLLAB
Slack is turning its app platform into an AI-agent surface — MCP on both ends, richer Block Kit.
◆ Current state
The developer-facing changelog is busy and coherent: a Slackbot MCP client and expanded Slack MCP server tools, new Block Kit blocks (data visualization, data table, alert/card/carousel), streaming API updates for AI assistants, and a steady drumbeat of CLI and SDK releases.
◆ Where it's heading
Slack is positioning itself as both an MCP host (Slackbot calling external tools) and an MCP server (external agents acting in Slack), while Block Kit gains data-rich primitives and the streaming API matures for assistant experiences. The direction is making Slack a first-class surface for AI agents and data apps.
◆ Prediction
Expect deeper MCP capabilities and more data/visualization blocks, with continued frequent CLI/SDK releases supporting the agent-and-app platform push.
Excalidraw alternatives
Other Collab products tracked by Sparkpulse, ranked by recent ship velocity. Tap any card for the full editorial trajectory or compare directly with Excalidraw.
SiYuan
SiYuan's 3.7.0 turns the note-taker into a scriptable, extensible platform
Anytype
Anytype's 0.55 cycle is a steady grind on chat, with code blocks the headline
Rocket.Chat
Rocket.Chat is methodically migrating off Meteor DDP toward a REST core
Front
Front is rebuilding the shared inbox around AI agents and omnichannel reach.
Claromentis
Claromentis's feed is secure-AI and compliance thought-leadership, not a release log.
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.
Superhuman
Superhuman bets on agent-operable email: a Codex plugin now drives the inbox.
Pumble
Pumble's feed is SEO comparison content, not a changelog — no shipped product changes to read here.
Twilio
Twilio fills out EU data residency, RBAC, and unified messaging APIs
MirrorFly
MirrorFly's feed is comparison-SEO listicles, not a product changelog
Telnyx
Telnyx is racing to be the voice-AI layer for autonomous agents, model by model
Mux
Mux pushes deeper into AI video workflows and engagement analytics as Robots starts billing.
Recent activity from Excalidraw and Slack
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 9d agoSlackAnnouncing the Slackbot MCP Client ⚡
- 9d agoSlackRelease: Slack CLI v4.3.0
- 10d agoSlackSystem notifications now delivered by "Slack" instead of Slackbot
- 10d agoSlackNew Block Kit data visualization block
- 24d agoSlackRelease: Java Slack SDK v1.49.0
- 24d agoSlackRelease: Slack CLI v4.2.0
- 2mo agoExcalidrawGitHub profile scrape (feed artifact, not a release)
- 1y agoExcalidrawv0.18.0 (2025-03-11) ⚡
- 1y agoExcalidrawGitHub profile error page (feed artifact)
- 1y agoExcalidrawv0.18.0 (duplicate feed entry)
- 2y agoExcalidrawv0.17.3 (2024-02-09)
- 2y agoExcalidrawv0.17.3 (2024-02-09)
Frequently asked questions
What is the difference between Excalidraw and Slack?
They serve adjacent needs but don't currently overlap on shipped themes. Slack is currently shipping more aggressively (velocity 6.3 vs 1.3), 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 Excalidraw 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 1.3), 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 Excalidraw?
Top Excalidraw alternatives in Collab are ranked by recent ship velocity. Browse the "Excalidraw alternatives" section above for the current picks, or visit /alternatives/excalidraw 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.