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Comparison · Infra & APIs
Retool vs Knock
A side-by-side editorial comparison of Retool and Knock — release velocity, themes, recent moves, and the top alternatives to consider.
Retool vs Knock: at a glance
| Feature | Retool | Knock |
|---|---|---|
| Sector | Infra & APIs | Infra & APIs |
| Velocity score | 6.3 | 6.3 |
| Sparks · 30d | 0 | 0 |
| Top themes | devtools, self-hosted, rbac, ai-app-building | notifications-infrastructure, agentic-workflows, integrations, developer-experience |
| Last editorial update | 1d ago | 2d ago |
| Website | Visit → | — |
What is Retool?
Retool bends its app builder toward AI and external deployment atop the 4.0 self-hosted base
Retool is shipping on two fronts at once: stabilizing the self-hosted 4.0 line (RBAC database migration, stable patches, upgrade FAQs) and steadily modernizing the new app builder. Recent releases add production-grade controls like custom domains and customizable Content Security Policy, alongside AI-adjacent workflow features such as restoring app state from the Chat tab. The classic-to-new-builder migration path keeps widening, now covering custom components and organization-level themes.
What is Knock?
Knock pushes an AI agent over its notification stack, from CLI to Slack.
Knock is a developer-first notifications platform, and its recent releases split between hardening the core (MFA, test-runner sandbox mode) and pushing an agent-driven control layer over notification workflows. Teams can now build, trigger, and manage engagement resources from an AI agent — in the dashboard, CLI, or Slack — rather than only through code.
Retool vs Knock: editorial side-by-side
Retool
6.3INFRA · APIS
Retool bends its app builder toward AI and external deployment atop the 4.0 self-hosted base
◆ Current state
Retool is shipping on two fronts at once: stabilizing the self-hosted 4.0 line (RBAC database migration, stable patches, upgrade FAQs) and steadily modernizing the new app builder. Recent releases add production-grade controls like custom domains and customizable Content Security Policy, alongside AI-adjacent workflow features such as restoring app state from the Chat tab. The classic-to-new-builder migration path keeps widening, now covering custom components and organization-level themes.
◆ Where it's heading
The direction is a Retool that treats internally-built apps as deployable products rather than internal-only tools, with custom domains and CSP controls pointing at externally-facing use. In parallel the platform is absorbing agentic building through MCP app import and chat-driven edits and restores, and metering AI usage via credit packs. The self-hosted 4.0 groundwork suggests enterprise governance is the near-term priority.
◆ Prediction
Expect the classic-app conversion path to keep closing gaps until the old builder is deprecated, and for the 4.0 RBAC plumbing to surface as a user-facing permissions layer. AI-driven building looks set to deepen rather than plateau.
Knock
6.3INFRA · APIS
Knock pushes an AI agent over its notification stack, from CLI to Slack.
◆ Current state
Knock is a developer-first notifications platform, and its recent releases split between hardening the core (MFA, test-runner sandbox mode) and pushing an agent-driven control layer over notification workflows. Teams can now build, trigger, and manage engagement resources from an AI agent — in the dashboard, CLI, or Slack — rather than only through code.
◆ Where it's heading
The throughline is making notification operations conversational and self-serve: agent skills, dynamic audiences buildable by an agent, a hosted preference center non-engineers can configure, and now the agent inside Slack. Knock is widening who can operate the system beyond developers while keeping its API-first core.
◆ Prediction
Expect the agent surface to keep expanding — more data sources beyond Shopify and deeper agent actions — pulling notification configuration out of code and into conversation and the dashboard.
Alternatives to Retool and Knock
Other Infra & APIs 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 Retool or Knock.
Resend
Resend ships a tight, frequent changelog: richer email content and deeper dev-tool reach
Unleash
Unleash reframes feature flags as agentic 'runtime control,' aimed straight at LaunchDarkly.
ToolJet
ToolJet widens its data-source layer — AI sources included — on a fast LTS/beta release train.
GitHub
GitHub bends toward enterprise AI governance while retiring its standalone Models offering.
Bugsnag
BugSnag is compounding on mobile observability and AI-assisted debugging
See all Retool alternatives → · See all Knock alternatives →
Recent activity from Retool and Knock
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 2d agoRetoolImprovements to classic app conversion
- 3d agoKnockTest runner improvements
- 4d agoRetoolPublishing apps on custom domains
- 4d agoKnockMulti-factor authentication
- 9d agoRetoolSelf-hosted Retool 4.0 and 3.334 stable updates
- 9d agoRetoolCustomize the Content Security Policy for apps
- 9d agoRetoolRestore changes from chat
- 16d agoRetoolSelf-hosted Retool 4.0 stable update
- 21d agoKnockPreference center
- 29d agoKnockNew partial input types
- 1mo agoKnockKnock agent for Slack ⚡
- 1mo agoKnockShopify data source
Frequently asked questions
What is the difference between Retool and Knock?
They serve adjacent needs but don't currently overlap on shipped themes. Retool and Knock are shipping at a similar cadence (velocity 6.3 vs 6.3, 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 Retool better than Knock?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Retool and Knock are shipping at a similar cadence (velocity 6.3 vs 6.3, both within Sparkpulse's "active" band). For your specific use case, the alternatives sections above list other Infra & APIs products to evaluate alongside.
What are the best alternatives to Retool?
Top Retool alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Retool alternatives" section above for the current picks, or visit /alternatives/retool for the full list with editorial commentary on each.
What are the best alternatives to Knock?
Top Knock alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Knock alternatives" section above for the current picks, or visit /alternatives/knock for the full list with editorial commentary on each.