httpuv
httpuv ships almost nothing, which is what you want from the web server under Shiny
Comparison · DevOps
ASP.NET Core vs htmltools
A side-by-side editorial comparison of ASP.NET Core and htmltools — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:maintenance
ASP.NET Core vs htmltools: at a glance
What is ASP.NET Core?
ASP.NET Core's public feed is servicing traffic; the real work happens on the .NET 11 previews.
The repository ships on a predictable servicing rhythm — monthly patch rollups across the 8.0, 9.0, and 10.0 branches, dominated by branding bumps, dependency updates, and build-infrastructure work. User-visible changes are rare and concentrated in the 10.0 line, where Blazor fixes still land. The 11.0 preview tags appear separately and carry single commits rather than release notes.
What is htmltools?
htmltools spends three releases walking back its own fill-layout opinions
htmltools generates the HTML that Shiny, bslib and R Markdown emit. Recent releases are dominated by one project - the fill and fillable layout system that powers bslib cards - being tuned release after release, surrounded by fixes for whatever testthat or R-devel changed underneath.
ASP.NET Core vs htmltools: editorial side-by-side
ASP.NET Core
5.0DEVOPS
ASP.NET Core's public feed is servicing traffic; the real work happens on the .NET 11 previews.
◆ Current state
The repository ships on a predictable servicing rhythm — monthly patch rollups across the 8.0, 9.0, and 10.0 branches, dominated by branding bumps, dependency updates, and build-infrastructure work. User-visible changes are rare and concentrated in the 10.0 line, where Blazor fixes still land. The 11.0 preview tags appear separately and carry single commits rather than release notes.
◆ Where it's heading
Nothing in this feed suggests a directional shift: the 8.0 and 9.0 branches are in maintenance, 10.0 absorbs the remaining behavioral fixes, and 11.0 is accumulating previews one commit at a time. Recent servicing entries lean unusually heavily toward CI and internal feed authentication work — the team replacing expired PATs with build identity and moving pipelines to newer images. Read this feed for stability signals, not for product direction.
◆ Prediction
The cadence points to continued monthly servicing across all three branches, with .NET 11 preview tags accumulating until a preview release note consolidates them into something readable.
htmltools
0.0DEVOPS
htmltools spends three releases walking back its own fill-layout opinions
◆ Current state
htmltools generates the HTML that Shiny, bslib and R Markdown emit. Recent releases are dominated by one project - the fill and fillable layout system that powers bslib cards - being tuned release after release, surrounded by fixes for whatever testthat or R-devel changed underneath.
◆ Where it's heading
The fill work is converging rather than expanding: 0.5.6 stopped forcing overflow on fillable containers, 0.5.7 stopped forcing full width on fill items, and 0.5.8 lowered the CSS's precedence by moving it into a named cascade layer. Each step removes an opinion that broke someone's layout. The two most recent releases add nothing at all beyond test compatibility.
◆ Prediction
With the fill CSS now scoped to its own cascade layer, expect fewer layout corrections and a continued pattern of small releases driven by testthat and R-devel rather than new API.
Alternatives to ASP.NET Core and htmltools
Other DevOps 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 ASP.NET Core or htmltools.
promises
promises drops R6 for plain environments and wires async work into OpenTelemetry
withr
withr rebuilt defer() on base R's own on.exit(), and got much faster for it
xml2
xml2 relicensed to MIT, then moved its hot accessors from S3 into C
httr
httr's last releases are housekeeping - the package now points users at httr2
magrittr
magrittr rewrote its pipe in C, then base R shipped one and the releases stopped
See all ASP.NET Core alternatives → · See all htmltools alternatives →
Recent activity from ASP.NET Core and htmltools
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1d agoASP.NET Core.NET 9.0.19
- 1d agoASP.NET Core.NET 8.0.30
- 16d agoASP.NET Core.NET 11 preview 7: OpenAPI generation environment support
- 27d agoASP.NET Corev10.0.11: [release/10.0] Limit Microsoft.OpenApi to disallow next major (#67772)
- 29d agoASP.NET Core.NET 10.0.10
- 29d agoASP.NET Core.NET 9.0.18
- 8mo agohtmltoolsTest fix for testthat 3.3.0
- 8mo agohtmltoolscapturePlot() examples run only interactively
- 2y agohtmltoolsFill CSS moves into its own cascade layer
- 2y agohtmltoolssave_html() becomes generic; css() passes CSS variables through
- 2y agohtmltoolstagQuery() no longer errors traversing NULL on r-devel
- 3y agohtmltoolsFillable containers stop forcing overflow, respect intrinsic size
Frequently asked questions
What is the difference between ASP.NET Core and htmltools?
Both compete on the same themes — maintenance — within DevOps. ASP.NET Core 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 ASP.NET Core better than htmltools?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. ASP.NET Core 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 DevOps products to evaluate alongside.
What are the best alternatives to ASP.NET Core?
Top ASP.NET Core alternatives in DevOps are ranked by recent ship velocity. Browse the "ASP.NET Core alternatives" section above for the current picks, or visit /alternatives/aspnet-core for the full list with editorial commentary on each.
What are the best alternatives to htmltools?
Top htmltools alternatives in DevOps are ranked by recent ship velocity. Browse the "htmltools alternatives" section above for the current picks, or visit /alternatives/htmltools for the full list with editorial commentary on each.