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Comparison · Collab
HedgeDoc vs Slack
A side-by-side editorial comparison of HedgeDoc and Slack — release velocity, themes, recent moves, and the top alternatives to consider.
HedgeDoc vs Slack: at a glance
What is HedgeDoc?
HedgeDoc 1.12.1 fixes seven advisories, then gets pulled for a PostgreSQL migration bug
HedgeDoc 1.12.1 fixed seven security advisories, including an impersonation attack when two auth providers return the same profile id, a timing leak that revealed registered emails, and unescaped iframes in slides. It was pulled within minutes because a profile provider migration failed on PostgreSQL, and 1.12.2 replaces it. The release also lets OAuth2 and OIDC providers supply profile photos and updates mermaid to 11.17.
What is Slack?
Slack's CLI now points coding agents to its MCP server and Skills plugin
Slack's developer channel is mostly agent plumbing. Slackbot skills can be created and managed through Web API methods and kept current from CI, Slack Code lets agents open ephemeral channels with people, and the Slack CLI now tells coding agents that run slack --help about the Slack MCP and Skills Plugin. Alongside sit a new Block Kit layout block and tighter review rules for low-usage Marketplace apps.
HedgeDoc vs Slack: editorial side-by-side
HedgeDoc
5.0COLLAB
HedgeDoc 1.12.1 fixes seven advisories, then gets pulled for a PostgreSQL migration bug
◆ Current state
HedgeDoc 1.12.1 fixed seven security advisories, including an impersonation attack when two auth providers return the same profile id, a timing leak that revealed registered emails, and unescaped iframes in slides. It was pulled within minutes because a profile provider migration failed on PostgreSQL, and 1.12.2 replaces it. The release also lets OAuth2 and OIDC providers supply profile photos and updates mermaid to 11.17.
◆ Where it's heading
The 1.x line remains driven by security response, with advisory batches arriving every one to three months. This release adds a schema migration, and the immediate PostgreSQL breakage shows the risk of mixing data changes into security patches. Small auth and rendering features keep arriving alongside the fixes.
◆ Prediction
More advisory batches on the 1.12.x line are likely, given the pattern; the entries do not show when the next major line will replace 1.x.
Slack
5.0COMMSCOLLAB
Slack's CLI now points coding agents to its MCP server and Skills plugin
◆ Current state
Slack's developer channel is mostly agent plumbing. Slackbot skills can be created and managed through Web API methods and kept current from CI, Slack Code lets agents open ephemeral channels with people, and the Slack CLI now tells coding agents that run slack --help about the Slack MCP and Skills Plugin. Alongside sit a new Block Kit layout block and tighter review rules for low-usage Marketplace apps.
◆ Where it's heading
Slack is treating AI agents as a primary audience for its developer surface: skills as code, agent workspaces in channels, and now CLI help text written for agents to read. The Marketplace change points the other way, toward less attention for apps nobody installs.
◆ Prediction
Expect more of the CLI and API surface to be documented for agents, likely more MCP-exposed Slack actions. The entries do not show when Slack Code or skills leave developer preview.
HedgeDoc alternatives
Other Collab products tracked by Sparkpulse, ranked by recent ship velocity. Tap any card for the full editorial trajectory or compare directly with HedgeDoc.
Teable
Teable previews the damage before a schema change and lets Routines run as their owners.
GitHub
GitHub puts Copilot inside Xcode's own coding assistant, a week after JetBrains Air.
Paperless-ngx
Paperless-ngx follows its busy October with a fixes-only 3.4.2
SOGo
SOGo's 5.12.13 fixes its largest batch of vulnerabilities yet, some critical.
Immich
Immich's 3.4 candidate adds passkeys and built-in backups.
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.
Fonoster
Fonoster Cloud starts charging for calls as the project moves to fonoster.ai.
Netcore Cloud
Netcore's blog keeps pitching search-plus-email on one data core, with no product release.
Superhuman
Superhuman gives team admins a console and Enterprise a usage report that counts MCP.
Synapse
Synapse opens the 1.165 cycle on schedule after two 1.164 patches
Whereby
Whereby folds three months into one digest and still lists nothing specific
Rocket.Chat
Rocket.Chat's fifth 9.0 candidate is about load: notifications, presence and startup.
Recent activity from HedgeDoc and Slack
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 15h agoHedgeDocHedgeDoc 1.12.2
- 15h agoHedgeDocHedgeDoc 1.12.1
- 1d agoSlackSlack CLI 4.13 tells coding agents about Slack MCP and Skills
- 3d agoSlackUpdated low-usage submission criteria for Slack Marketplace apps
- 6d agoSlackSlack CLI 4.12.0, the fourth CLI release in October
- 7d agoSlackNew Block Kit layout block
- 8d agoSlackSlackbot skills API methods are here!
- 14d agoSlackSlack CLI 4.11.0 ships with no change notes
- 2mo agoHedgeDocHedgeDoc 1.12.0
- 3mo agoHedgeDocHedgeDoc 1.11.1
- 4mo agoHedgeDocHedgeDoc 1.11.0
- 6mo agoHedgeDocHedgeDoc 1.10.8
Frequently asked questions
What is the difference between HedgeDoc and Slack?
They serve adjacent needs but don't currently overlap on shipped themes. HedgeDoc and Slack are shipping at a similar cadence (velocity 5.0 vs 5.0, both within Sparkpulse's "active" band). See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is HedgeDoc better than Slack?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. HedgeDoc and Slack are shipping at a similar cadence (velocity 5.0 vs 5.0, both within Sparkpulse's "active" band). For your specific use case, the alternatives sections above list other Collab products to evaluate alongside.
What are the best alternatives to HedgeDoc?
Top HedgeDoc alternatives in Collab are ranked by recent ship velocity. Browse the "HedgeDoc alternatives" section above for the current picks, or visit /alternatives/hedgedoc 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.