Windmill
Windmill is dismantling the paywall between itself and the data stack
Comparison · Infra & APIs
Knock vs pkgbuild
A side-by-side editorial comparison of Knock and pkgbuild — release velocity, themes, recent moves, and the top alternatives to consider.
Knock vs pkgbuild: at a glance
| Feature | Knock | pkgbuild |
|---|---|---|
| Sector | Infra & APIs | Infra & APIs |
| Velocity score | 6.3 | 0.0 |
| Sparks · 30d | 1 | 0 |
| Top themes | notification infrastructure, data sources, agent interface, workflow primitives | build-tools, rtools, r-lib, devtools |
| Last editorial update | 11h ago | 1h ago |
| Website | — | Visit → |
What is Knock?
Knock is pulling every customer-data source into notifications, then putting an agent on top.
Knock is a notification infrastructure layer, and the last two months have gone into two things: widening what can trigger a workflow, and making the resulting data legible. Amplitude and Clay both landed as first-class data sources, so product events, cohort changes and enriched CRM rows now drive messaging directly rather than through customer-written glue. The workflow engine gained a wait-for-event primitive, and the template editor was rebuilt around block editing.
What is pkgbuild?
A package whose release calendar is written by whoever ships the next Rtools.
pkgbuild is the layer devtools and pak use to run R CMD build and R CMD INSTALL, and most of what it does is know where the compiler is. Six of its last eight releases are about Rtools: supporting Rtools43, 44 and 45, finding installations that did not come from an installer, reading the Windows registry correctly again, and handling aarch64 Windows when the expected environment variable is unset. The feature surface is a handful of Config/build/* DESCRIPTION options for packages with unusual build needs.
Knock vs pkgbuild: editorial side-by-side
Knock
6.3INFRA · APIS
Knock is pulling every customer-data source into notifications, then putting an agent on top.
◆ Current state
Knock is a notification infrastructure layer, and the last two months have gone into two things: widening what can trigger a workflow, and making the resulting data legible. Amplitude and Clay both landed as first-class data sources, so product events, cohort changes and enriched CRM rows now drive messaging directly rather than through customer-written glue. The workflow engine gained a wait-for-event primitive, and the template editor was rebuilt around block editing.
◆ Where it's heading
The shape is a product moving up from delivery mechanics toward the surrounding workflow. Sources reduce the integration code a customer writes before Knock is useful; the agent layer reduces the reporting work after. Category and tag management being pulled into dedicated dashboard pages is the housekeeping that follows: the primitives got numerous enough to need their own administration surface.
◆ Prediction
Expect the data-source list to keep growing along the same lines — warehouse and product-analytics tools that already hold the user state Knock needs — and for the agent to be given more of the dashboard's read surface.
pkgbuild
0.0INFRA · APIS
A package whose release calendar is written by whoever ships the next Rtools.
◆ Current state
pkgbuild is the layer devtools and pak use to run R CMD build and R CMD INSTALL, and most of what it does is know where the compiler is. Six of its last eight releases are about Rtools: supporting Rtools43, 44 and 45, finding installations that did not come from an installer, reading the Windows registry correctly again, and handling aarch64 Windows when the expected environment variable is unset. The feature surface is a handful of Config/build/* DESCRIPTION options for packages with unusual build needs.
◆ Where it's heading
This is maintenance defined entirely by other people's release schedules — R minor versions, Rtools versions, and the DESCRIPTION options downstream package authors ask for. The one structural change worth noting is that on R 4.3 and later the package stopped special-casing Windows and now tests for build tools by compiling a small package, the same way it always has on Unix. That is the direction: fewer platform branches, more probing.
◆ Prediction
Expect the next release to add support for whichever Rtools ships alongside the next R minor version, and expect the Windows registry lookups to keep shrinking as the compile-probe approach proves out.
Alternatives to Knock and pkgbuild
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 Knock or pkgbuild.
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.
DNSControl
DNSControl v5 is feature complete and counting down to an August ship date
highr
highr is finished software: one-line releases every year or two
See all Knock alternatives → · See all pkgbuild alternatives →
Recent activity from Knock and pkgbuild
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1d agoKnockCategory + tag management
- 7d agoKnockAmplitude data source
- 14d agoKnockAnalytics in the Knock agent ⚡
- 15d agoKnockWait for event function
- 16d agoKnockClay data source
- 21d agoKnockRedesigned template editor
- 1y agopkgbuildnever-clean build option; aarch64 Windows Rtools detection
- 1y agopkgbuildWindows build-tool detection now probes by compiling
- 1y agopkgbuildFix Rtools 4.3 and 4.4 discovery on Windows
- 2y agopkgbuildSupport R 4.4.x and Rtools44
- 2y agopkgbuildDrops crayon, rprojroot and prettyunits dependencies
- 3y agopkgbuildbootstrap.R now runs under pkgbuild_process and pak
Frequently asked questions
What is the difference between Knock and pkgbuild?
They serve adjacent needs but don't currently overlap on shipped themes. Knock is currently shipping more aggressively (velocity 6.3 vs 0.0), 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 Knock better than pkgbuild?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Knock is currently shipping more aggressively (velocity 6.3 vs 0.0), 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 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.
What are the best alternatives to pkgbuild?
Top pkgbuild alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "pkgbuild alternatives" section above for the current picks, or visit /alternatives/pkgbuild for the full list with editorial commentary on each.