httpuv
httpuv ships almost nothing, which is what you want from the web server under Shiny
Comparison · DevOps
httr vs later
A side-by-side editorial comparison of httr and later — release velocity, themes, recent moves, and the top alternatives to consider.
httr vs later: at a glance
What is httr?
httr's last releases are housekeeping - the package now points users at httr2
httr is in wind-down. The last release with real feature work was 1.4.0 in 2018; everything since is test stabilization, CRAN-driven fixes, and unwinding a dependency on the httpbin service. Version 1.4.7 removed the vignette contents outright and redirects readers to httr2.
What is later?
later spends its releases keeping R's event loop compiling against moving toolchains.
later provides the event loop that lets R schedule callbacks, underpinning shiny, httpuv and most async work in the language. Recent releases are overwhelmingly build and compatibility work: Rcpp error-handling changes, a C23 namespace collision with glibc, and header ordering to satisfy Rcpp auto-includes.
httr vs later: editorial side-by-side
httr
0.0DEVOPS
httr's last releases are housekeeping - the package now points users at httr2
◆ Current state
httr is in wind-down. The last release with real feature work was 1.4.0 in 2018; everything since is test stabilization, CRAN-driven fixes, and unwinding a dependency on the httpbin service. Version 1.4.7 removed the vignette contents outright and redirects readers to httr2.
◆ Where it's heading
This is a succession, not a decline. The maintainers are keeping httr installable and passing checks for the very large base of packages that depend on it, while all design work happens in httr2. The pattern across these six releases is unambiguous: nothing lands here unless CRAN, a test service, or a platform forced it.
◆ Prediction
Expect continued patch releases driven only by CRAN checks and toolchain changes; the interesting HTTP work in R will keep landing in httr2.
later
0.0DEVOPS
later spends its releases keeping R's event loop compiling against moving toolchains.
◆ Current state
later provides the event loop that lets R schedule callbacks, underpinning shiny, httpuv and most async work in the language. Recent releases are overwhelmingly build and compatibility work: Rcpp error-handling changes, a C23 namespace collision with glibc, and header ordering to satisfy Rcpp auto-includes.
◆ Where it's heading
The API is settled enough that the release calendar is set by the surrounding ecosystem rather than by any feature plan. 1.4.5 cleaned house by dropping pre-unwind-protect fallbacks, and 1.4.6 carries the only recent change a user would notice at all — lower CPU use when idle at the console.
◆ Prediction
Expect further releases pinned to compiler and Rcpp changes, with the observable surface staying essentially where it is.
Alternatives to httr and later
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 httr or later.
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
htmltools
htmltools spends three releases walking back its own fill-layout opinions
xml2
xml2 relicensed to MIT, then moved its hot accessors from S3 into C
magrittr
magrittr rewrote its pipe in C, then base R shipped one and the releases stopped
Recent activity from httr and later
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 5mo agolaterlater 1.4.8 tracks Rcpp Rf_error handling changes
- 5mo agolaterlater 1.4.7 fixes a C23 once_flag collision breaking builds
- 6mo agolaterlater 1.4.6 improves idle responsiveness at the R console
- 7mo agolaterlater 1.4.5 drops legacy fallbacks, requires R 3.5 and Rcpp 1.0.10
- 11mo agolaterlater 1.4.4 fixes test timings only
- 11mo agolaterlater 1.4.3 stops touching .Random.seed, drops autorun argument
- 2y agohttrVignettes removed and redirected to httr2 ⚡
- 3y agohttrStops using the httpbin service in examples and tests
- 3y agohttrOut-of-band auth helper honors the rlang_interactive option
- 3y agohttrFixes an intermittent test failure
- 6y agohttrparse_url() follows RFC3986 for scheme parsing
- 7y agohttrDrops the Windows CA bundle override so curl uses schannel
Frequently asked questions
What is the difference between httr and later?
They serve adjacent needs but don't currently overlap on shipped themes. httr and later are shipping at a similar cadence (velocity 0.0 vs 0.0, both within Sparkpulse's "active" band). See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is httr better than later?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. httr and later are shipping at a similar cadence (velocity 0.0 vs 0.0, both within Sparkpulse's "active" band). For your specific use case, the alternatives sections above list other DevOps products to evaluate alongside.
What are the best alternatives to httr?
Top httr alternatives in DevOps are ranked by recent ship velocity. Browse the "httr alternatives" section above for the current picks, or visit /alternatives/httr for the full list with editorial commentary on each.
What are the best alternatives to later?
Top later alternatives in DevOps are ranked by recent ship velocity. Browse the "later alternatives" section above for the current picks, or visit /alternatives/later-r for the full list with editorial commentary on each.