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Comparison · Infra & APIs
Apache CloudStack vs Windmill
A side-by-side editorial comparison of Apache CloudStack and Windmill — release velocity, themes, recent moves, and the top alternatives to consider.
Apache CloudStack vs Windmill: at a glance
What is Apache CloudStack?
CloudStack's feed shows two LTS branches maintained in parallel and little else
The visible activity on Apache CloudStack is branch maintenance across two long-term-support lines, 4.20 and 4.22. The newest tag, 4.20.3.1, carries no release notes at all — just a line stating it was tagged on a fixes branch. The most informative recent entry remains 4.22.0.1, a security release fixing seven CVEs, several of them access-control failures around backups.
What is Windmill?
Windmill gave away the warehouse connectors and now runs dbt natively — the trial is the strategy.
Two lines are moving at once. The platform line made dbt projects a first-class runtime, unified the deployment target on workspace lineage, opened Compare & Deploy to arbitrary target workspaces, and moved BigQuery and Snowflake out from behind the Enterprise license. The AI line took sessions to beta on by default and has been adding controls around them since — file attachments, visible web-search sources, artifact version history, and now a read-only plan mode that refuses anything that writes or deploys until you approve a plan.
Apache CloudStack vs Windmill: editorial side-by-side
Apache CloudStack
2.5INFRA · APIS
CloudStack's feed shows two LTS branches maintained in parallel and little else
◆ Current state
The visible activity on Apache CloudStack is branch maintenance across two long-term-support lines, 4.20 and 4.22. The newest tag, 4.20.3.1, carries no release notes at all — just a line stating it was tagged on a fixes branch. The most informative recent entry remains 4.22.0.1, a security release fixing seven CVEs, several of them access-control failures around backups.
◆ Where it's heading
This feed publishes tags, not changelogs: every maintenance release points at external documentation rather than listing what changed, so direction has to be inferred from version numbers and the occasional security advisory. What can be read from it is a steady dual-branch cadence, with 4.20 and 4.22 receiving parallel maintenance and 4.22 carrying the newer feature work. The one substantive disclosure in this window, the CVE batch, clustered around backup and template permissions.
◆ Prediction
The dual-branch maintenance pattern should continue, though the feed itself will not reveal feature direction unless a security advisory forces detail into it.
Windmill
8.8INFRA · APIS
Windmill gave away the warehouse connectors and now runs dbt natively — the trial is the strategy.
◆ Current state
Two lines are moving at once. The platform line made dbt projects a first-class runtime, unified the deployment target on workspace lineage, opened Compare & Deploy to arbitrary target workspaces, and moved BigQuery and Snowflake out from behind the Enterprise license. The AI line took sessions to beta on by default and has been adding controls around them since — file attachments, visible web-search sources, artifact version history, and now a read-only plan mode that refuses anything that writes or deploys until you approve a plan.
◆ Where it's heading
Windmill is positioning as the place a data team's existing work already runs rather than a system to be ported to: an unmodified dbt project drops in, its models become addressable assets with ref() lineage, and the warehouse languages needed to reach them are no longer paywalled. In parallel, the AI session work is maturing from capability to governance — the recent additions are all about reviewability and constraint, not raw autonomy. The deployment changes point the same way, collapsing configurable targets into a single derived answer.
◆ Prediction
Expect the plan-and-approve posture to spread beyond session chats into the durable AI surfaces, and more warehouse-adjacent runtimes to follow dbt into the first-class treatment; Oracle and MS SQL remain the obvious Enterprise holdouts to watch.
Alternatives to Apache CloudStack 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 Apache CloudStack or Windmill.
ToolJet
ToolJet's LTS and beta trains both narrow to component polish and CVE patching
missSBM
missSBM returns after four dormant years with a stricter API and a new refinement step.
Luminescence
Luminescence is revisiting the statistical assumptions baked into its dose-response fits.
sps
sps keeps sanding down sequential Poisson sampling rather than adding to it.
simDAG
simDAG grew a second simulation engine, then spent two releases surviving upstream breakage.
See all Apache CloudStack alternatives → · See all Windmill alternatives →
Recent activity from Apache CloudStack and Windmill
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1h agoApache CloudStack4.20.3.1
- 4d agoWindmillPlan mode for AI sessions
- 7d agoWindmillNested filter groups and dotted paths in trigger filters
- 8d agoWindmillVersion history for AI session artifacts
- 17d agoWindmillRun dbt projects as a first-class Windmill runtime ⚡
- 19d agoWindmillOne deployment target, derived from the workspace lineage
- 19d agoWindmillCompare & Deploy into any workspace
- 2mo agoApache CloudStackApache CloudStack 4.22.1.0 (LTS)
- 3mo agoApache CloudStackCloudStack 4.22.0.1 patches 7 CVEs across backups and templates
- 4mo agoApache CloudStackApache CloudStack 4.20.3.0 (LTS)
- 9mo agoApache CloudStackApache CloudStack 4.22.0.0 (LTS)
- 9mo agoApache CloudStackApache CloudStack 4.20.2.0 (LTS)
Frequently asked questions
What is the difference between Apache CloudStack and Windmill?
They serve adjacent needs but don't currently overlap on shipped themes. Windmill is currently shipping more aggressively (velocity 8.8 vs 2.5), 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 Apache CloudStack better than Windmill?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Windmill is currently shipping more aggressively (velocity 8.8 vs 2.5), 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 Apache CloudStack?
Top Apache CloudStack alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Apache CloudStack alternatives" section above for the current picks, or visit /alternatives/cloudstack 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.