authentik
The first patch on 2026.8 is twenty-odd fixes and no new surface.
Comparison · Infra & APIs
werf vs Windmill
A side-by-side editorial comparison of werf and Windmill — release velocity, themes, recent moves, and the top alternatives to consider.
werf vs Windmill: at a glance
What is werf?
The 3.x line finally ships function: authenticated secret writes and render patches.
werf publishes the same work across alpha, beta, ea and stable channels plus a 3.x dev line, so one fix surfaces three or four times under different version numbers. This pair is that pattern exactly: v3.3.0 carries two features — writing authenticated secret values from deploy, and renderPatches support — plus four fixes, and v2.77.2 carries the same four fixes and nothing else. The fixes are the usual build-engine territory: buildah imports failing on symlinked paths, a panic when a stapel base image disappears mid-commit, a cache repo pointing at itself, and host-cleanup misreporting what it pruned.
What is Windmill?
Windmill gives its AI agents a test harness, the piece that lets them into production flows
Windmill is a developer platform for scripts, flows and internal apps, shipping weekly across three lanes. The AI lane is the busiest: sessions that build scripts and flows as reviewable drafts, a read-only plan mode that refuses writes until you approve, version history on session artifacts, and now evaluation for reusable agents. The runtime lane keeps absorbing data tooling — dbt projects run natively, BigQuery and Snowflake came out from behind the Enterprise licence. The workspace lane is consolidating deployment semantics around fork lineage.
werf vs Windmill: editorial side-by-side
werf
5.0INFRA · APIS
The 3.x line finally ships function: authenticated secret writes and render patches.
◆ Current state
werf publishes the same work across alpha, beta, ea and stable channels plus a 3.x dev line, so one fix surfaces three or four times under different version numbers. This pair is that pattern exactly: v3.3.0 carries two features — writing authenticated secret values from deploy, and renderPatches support — plus four fixes, and v2.77.2 carries the same four fixes and nothing else. The fixes are the usual build-engine territory: buildah imports failing on symlinked paths, a panic when a stapel base image disappears mid-commit, a cache repo pointing at itself, and host-cleanup misreporting what it pruned.
◆ Where it's heading
The division of labour between the lines is now explicit — 2.x takes only fixes, 3.x takes fixes plus everything new. This is the first window where the 3.x dev line carries user-facing deploy function rather than build internals and gated experiments, which moves it from a place to accumulate changes toward something with its own reason to exist. The build-engine hardening under parallelism continues underneath both.
◆ Prediction
renderPatches and authenticated secret writes are both deploy-side, so the next 3.x releases likely continue there rather than returning to buildah. Whether the embedded deno work behind its build tag connects to the render path is still not stated.
Windmill
6.3INFRA · APIS
Windmill gives its AI agents a test harness, the piece that lets them into production flows
◆ Current state
Windmill is a developer platform for scripts, flows and internal apps, shipping weekly across three lanes. The AI lane is the busiest: sessions that build scripts and flows as reviewable drafts, a read-only plan mode that refuses writes until you approve, version history on session artifacts, and now evaluation for reusable agents. The runtime lane keeps absorbing data tooling — dbt projects run natively, BigQuery and Snowflake came out from behind the Enterprise licence. The workspace lane is consolidating deployment semantics around fork lineage.
◆ Where it's heading
The AI work has moved through a recognisable sequence: first let the assistant build things, then constrain what it may do without approval, then make its output reviewable and revertible, and now make agents measurable against a fixed set of cases. That is the arc of taking AI from a demo surface to something you are willing to put in a scheduled flow. In parallel, Windmill keeps pulling data-stack runtimes inside its own execution model rather than integrating with them, and keeps giving away runtimes that were previously licensed.
◆ Prediction
Evals are the obvious hook for regression gating, so expect them to be callable from a flow or CI rather than only from the agent card, and expect the eval run history to feed the same version-comparison surface the session artifacts already use.
Alternatives to werf and Windmill
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 werf or Windmill.
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.
Infisical
Folder-level RBAC lands, and approvals finally get a webhook to talk to.
Retool
Retool posts one-line changelog entries, and its agent work is the only visible thread
See all werf alternatives → · See all Windmill alternatives →
Recent activity from werf and Windmill
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1d agowerf3.3.0 adds authenticated secret writes and renderPatches to deploy
- 1d agowerf2.77.2 backports four build and cleanup fixes, no new function
- 9d agoWindmillAI agent evals (beta) ⚡
- 19d agoWindmillPlan mode for AI sessions
- 22d agowerf2.77.1 fixes buildah imports on symlinked paths
- 22d agowerf3.x dev embeds deno and adds a registry-side cleanup report
- 22d agoWindmillNested filter groups and dotted paths in trigger filters
- 23d agowerf2.76.0 adds condition-tracking gate and build timing
- 23d agoWindmillVersion history for AI session artifacts
- 27d agowerflatest-signature
- 1mo agoWindmillRun dbt projects as a first-class Windmill runtime ⚡
- 1mo agoWindmillOne deployment target, derived from the workspace lineage
Frequently asked questions
What is the difference between werf and Windmill?
They serve adjacent needs but don't currently overlap on shipped themes. Windmill 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 werf better than Windmill?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Windmill 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 Infra & APIs products to evaluate alongside.
What are the best alternatives to werf?
Top werf alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "werf alternatives" section above for the current picks, or visit /alternatives/werf for the full list with editorial commentary on each.
What are the best alternatives to Windmill?
Top Windmill alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Windmill alternatives" section above for the current picks, or visit /alternatives/windmill for the full list with editorial commentary on each.