authentik
The first patch on 2026.8 is twenty-odd fixes and no new surface.
Comparison · Infra & APIs
Retool vs Stacker
A side-by-side editorial comparison of Retool and Stacker — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:internal-tools
Retool vs Stacker: at a glance
What is Retool?
Retool posts one-line changelog entries, and its agent work is the only visible thread
Retool publishes very short changelog entries — most under 120 characters, several under 60 — so each release is a headline with a sentence attached. The recent run covers message queueing, branch management gaining rename and copy, performance work on the app building agent, a BigID resource deprecation, and periodic self-hosted stable tags. Nothing here carries enough text to judge scope, only direction.
What is Stacker?
Stacker's AI agent has absorbed every part of app building except the data itself.
Stacker builds internal tools and customer portals on top of existing data. From late October 2025 the entire changelog is one project: an AI Builder Agent that generates and edits apps by conversation. In under seven weeks it went from generating initial pages and layouts to editing tables and fields, creating lookups, rollups and formulas, reshaping create forms, reordering navigation, building white-labelled external portals with custom domains and permissions, and finally taking a spreadsheet upload and configuring a schema and matching layouts from it.
Retool vs Stacker: editorial side-by-side
Retool
5.0INFRA · APIS
Retool posts one-line changelog entries, and its agent work is the only visible thread
◆ Current state
Retool publishes very short changelog entries — most under 120 characters, several under 60 — so each release is a headline with a sentence attached. The recent run covers message queueing, branch management gaining rename and copy, performance work on the app building agent, a BigID resource deprecation, and periodic self-hosted stable tags. Nothing here carries enough text to judge scope, only direction.
◆ Where it's heading
Two threads are legible from the headlines. The app building agent keeps getting attention, which is where Retool is putting its AI bet, and the branch-based development workflow keeps accruing the controls a team needs — renaming and copying branch names is small, but it is the kind of gap that only matters once people are actually working in branches. Deprecations like the BigID resource type suggest a periodic prune of connectors that did not find usage.
◆ Prediction
Branch controls have now been extended twice without a governance layer appearing, so expect permissions or review on branch operations next, since that is what teams ask for once branch-based development is in real use.
Stacker
0.0INFRA · APIS
Stacker's AI agent has absorbed every part of app building except the data itself.
◆ Current state
Stacker builds internal tools and customer portals on top of existing data. From late October 2025 the entire changelog is one project: an AI Builder Agent that generates and edits apps by conversation. In under seven weeks it went from generating initial pages and layouts to editing tables and fields, creating lookups, rollups and formulas, reshaping create forms, reordering navigation, building white-labelled external portals with custom domains and permissions, and finally taking a spreadsheet upload and configuring a schema and matching layouts from it.
◆ Where it's heading
The sequencing is deliberate: each release hands the agent one more thing that previously required the no-code editor, while the company repeatedly reassures users that the full editor still works on AI-built apps. That dual framing — build by conversation, refine by hand — is the position Stacker is defending, and it is a reasonable answer to pure prompt-to-app tools that leave nothing to adjust afterwards. The portal release is the notable widening, since it points the agent at the external-user product rather than internal tools.
◆ Prediction
Every surface except data connection has now been handed to the agent; connecting and mapping an external source — the step still done manually before any of this works — is the remaining gap, and the spreadsheet uploader is the first move toward closing it.
Alternatives to Retool and Stacker
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 Stacker.
incident.io
Alert rate limits stop being per-source and start being per-tenant, by query.
Warp
The essay series keeps running ahead of the products it describes.
Node-RED
Both lines patch on the same day, and the reverted JSONata upgrade finally sticks.
werf
The 3.x line finally ships function: authenticated secret writes and render patches.
Infisical
Folder-level RBAC lands, and approvals finally get a webhook to talk to.
See all Retool alternatives → · See all Stacker alternatives →
Recent activity from Retool and Stacker
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 6d agoRetoolMessage queueing
- 7d agoRetoolImproved app development branch controls
- 7d agoRetoolSelf-hosted Retool 4.34 Stable
- 8d agoRetoolImproved performance of app building agent
- 9d agoRetoolDeprecation of the BigID resource type
- 13d agoRetoolSelf-hosted Retool 4.0 stable update
- 8mo agoStackerUpload your spreadsheet, let AI do the rest
- 8mo agoStackerBuild customer portals using AI Agent
- 9mo agoStackerReorder your navigation with a conversation
- 9mo agoStackerManage create forms with AI
- 9mo agoStackerAsk the AI Builder Agent to bring in data from other tables
- 9mo agoStackerBuild faster with AI and No-Code, together.
Frequently asked questions
What is the difference between Retool and Stacker?
Both compete on the same themes — internal-tools — within Infra & APIs. Retool is currently shipping more aggressively (velocity 5.0 vs 0.0), with 0 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 Retool better than Stacker?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Retool is currently shipping more aggressively (velocity 5.0 vs 0.0), with 0 editorial sparks in the last 30 days against 0. 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 Stacker?
Top Stacker alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Stacker alternatives" section above for the current picks, or visit /alternatives/stacker for the full list with editorial commentary on each.