RSelenium
RSelenium's only release in eight years touched documentation and CI, nothing else.
Comparison · Infra & APIs
waldo vs Windmill
A side-by-side editorial comparison of waldo and Windmill — release velocity, themes, recent moves, and the top alternatives to consider.
waldo vs Windmill: at a glance
What is waldo?
waldo keeps shedding dependencies while teaching its diff engine new object systems
waldo produces the object comparisons that testthat failure messages are built from. The recent releases do two things: drop dependencies - tibble, rematch2 and fansi have all gone - and extend comparison to object systems that did not exist when it was written, notably S7. Correctness of missing-value and tolerance semantics accounts for most of the rest.
What is Windmill?
Windmill is dismantling the paywall between itself and the data stack
Three of the last six releases are directional: dbt projects running unmodified as a first-class runtime, BigQuery and Snowflake dropping out of the Enterprise tier, and AI sessions enabled by default in beta. Around them sits careful platform work — workspace lineage as the single deployment target, arbitrary-target Compare & Deploy, schema contracts for DuckLake consumers, and in-app git-to-Windmill sync. Entries are written with migration notes and upgrade paths, which is the tone of a product being run by people who expect it in production.
waldo vs Windmill: editorial side-by-side
waldo
0.0INFRA · APIS
waldo keeps shedding dependencies while teaching its diff engine new object systems
◆ Current state
waldo produces the object comparisons that testthat failure messages are built from. The recent releases do two things: drop dependencies - tibble, rematch2 and fansi have all gone - and extend comparison to object systems that did not exist when it was written, notably S7. Correctness of missing-value and tolerance semantics accounts for most of the rest.
◆ Where it's heading
This is a package deliberately shrinking its footprint while widening what it understands. Since it is imported by testthat, every dependency it drops is one fewer package in the check environment of most of CRAN, which is clearly the motivation. The comparison logic itself changes only when R gains a new way to represent objects.
◆ Prediction
Expect S7 support to deepen from basic to complete as S7 adoption grows, and further dependency removals; the diff algorithm itself looks settled.
Windmill
8.8INFRA · APIS
Windmill is dismantling the paywall between itself and the data stack
◆ Current state
Three of the last six releases are directional: dbt projects running unmodified as a first-class runtime, BigQuery and Snowflake dropping out of the Enterprise tier, and AI sessions enabled by default in beta. Around them sits careful platform work — workspace lineage as the single deployment target, arbitrary-target Compare & Deploy, schema contracts for DuckLake consumers, and in-app git-to-Windmill sync. Entries are written with migration notes and upgrade paths, which is the tone of a product being run by people who expect it in production.
◆ Where it's heading
The company is aiming squarely at data teams and removing every obstacle between them and a self-hosted trial: bring the dbt project as-is, query the warehouse on the community edition, and let the AI build scripts and flows behind the existing draft-and-diff review gate. The governance work advances at the same pace, so the free surface widens without the deployment story loosening. Enterprise is being narrowed to Oracle, MS SQL, and scale rather than to the workloads data teams actually run.
◆ Prediction
With dbt lineage and DuckLake schema contracts both landed, the likely next step is unifying them — a single asset graph spanning dbt models and materialized tables, with contract validation running across the boundary.
Alternatives to waldo 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 waldo or Windmill.
servr
servr keeps growing from a static file server into a general-purpose R web server.
Rhino
Rhino's release line runs on release candidates, and 1.12 makes room for coding agents.
Resend
Resend is wiring itself into every agent runtime it can reach, one standard at a time
vdiffr
vdiffr finished its job in 2021 and has been tracking compilers ever since.
rsconnect
The deployment client is being rebuilt around credentials it never has to store.
See all waldo alternatives → · See all Windmill alternatives →
Recent activity from waldo and Windmill
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 2d agoWindmillNested filter groups and dotted paths in trigger filters
- 12d agoWindmillRun dbt projects as a first-class Windmill runtime ⚡
- 14d agoWindmillCompare & Deploy into any workspace
- 14d agoWindmillOne deployment target, derived from the workspace lineage
- 19d agoWindmillBigQuery and Snowflake available in the community edition ⚡
- 22d agoWindmillAI sessions (beta) ⚡
- 1y agowaldoCompares weakrefs, ignores read-only S7 properties
- 1y agowaldoOnly uses bit64 comparison when bit64 is installed
- 1y agowaldoDrops tibble and rematch2; adds basic S7 support
- 1y agowaldoDrops the fansi dependency
- 2y agowaldoFixes for upcoming R-devel changes
- 3y agowaldoTolerance now governs both display and NaN equality
Frequently asked questions
What is the difference between waldo and Windmill?
They serve adjacent needs but don't currently overlap on shipped themes. Windmill is currently shipping more aggressively (velocity 8.8 vs 0.0), with 3 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 waldo 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 0.0), with 3 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 waldo?
Top waldo alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "waldo alternatives" section above for the current picks, or visit /alternatives/waldo 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.