tidytlg
A tables-listings-graphs package that reached CRAN and then went quiet.
Comparison · Analytics
crul vs parzer
A side-by-side editorial comparison of crul and parzer — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:ropensci
crul vs parzer: at a glance
What is crul?
crul took mocking back from webmockr and made it a property of the client itself
crul is the R6-based HTTP client underneath much of rOpenSci's package stack, covering synchronous requests, three flavours of async, pagination and retries. Its 1.6.0 release in July 2025 changed where test mocking lives: each client — HttpClient, Async, AsyncVaried — now takes a mocking parameter at initialisation or per method, and the standalone mock() function is deprecated. Mocking used to be something webmockr switched on from outside; it is now a setting on the client.
What is parzer?
A coordinate parser whose entire job is surviving how badly humans write latitude and longitude.
parzer converts messy coordinate strings — degrees, minutes, seconds, assorted symbols, arbitrary whitespace — into decimal degrees. Development is slow and sporadic, with three-year gaps between releases, and the work splits between C++ performance in the internal scrub() path and a long tail of parsing bugs. The most recent release, 0.4.4, fixed two genuinely dangerous ones: a leading space could silently drop a negative sign, and an E in a longitude string returned NA while a W parsed fine.
crul vs parzer: editorial side-by-side
crul
0.0ANALYTICS
crul took mocking back from webmockr and made it a property of the client itself
◆ Current state
crul is the R6-based HTTP client underneath much of rOpenSci's package stack, covering synchronous requests, three flavours of async, pagination and retries. Its 1.6.0 release in July 2025 changed where test mocking lives: each client — HttpClient, Async, AsyncVaried — now takes a mocking parameter at initialisation or per method, and the standalone mock() function is deprecated. Mocking used to be something webmockr switched on from outside; it is now a setting on the client.
◆ Where it's heading
The async surface has been the growth area for years — retries reached Async, AsyncVaried, AsyncQueue and HttpRequest in 1.4, AsyncQueue gained the response accessors in 1.2, and 1.5.0 wired async requests up to webmockr. The 1.6.0 change reverses that direction of dependency, and it landed within a minute of webmockr's own release severing its tie to vcr. Read together, the rOpenSci HTTP stack is being deliberately untangled so each package can be used without the others.
◆ Prediction
With mock() deprecated rather than removed, the next major release is the likely point of deletion. Expect the remaining work to follow the same decoupling theme rather than adding request features.
parzer
0.0ANALYTICS
A coordinate parser whose entire job is surviving how badly humans write latitude and longitude.
◆ Current state
parzer converts messy coordinate strings — degrees, minutes, seconds, assorted symbols, arbitrary whitespace — into decimal degrees. Development is slow and sporadic, with three-year gaps between releases, and the work splits between C++ performance in the internal scrub() path and a long tail of parsing bugs. The most recent release, 0.4.4, fixed two genuinely dangerous ones: a leading space could silently drop a negative sign, and an E in a longitude string returned NA while a W parsed fine.
◆ Where it's heading
The package has settled its scope — 0.4.1 explicitly rewrote the documentation to say it parses coordinates rather than validates them — and now moves only when someone finds a string it mishandles. Recent work has also been about shedding weight: Rcpp dependence reduced, the C++ requirement dropped from DESCRIPTION, suggested dependencies removed, and the vignette builder moved to Quarto. Maintainership passed to a new maintainer in 2022 and the package has stayed within rOpenSci.
◆ Prediction
The next release will most likely be another batch of parsing edge cases reported by users, since that is what every release since 0.2.0 has been. Nothing in these entries points to new functionality.
Alternatives to crul and parzer
Other Analytics 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 crul or parzer.
Tplyr
Tplyr made clinical summary tables explain where every number came from.
rlistings
Clinical listings that keep inheriting their hardest problem — pagination — from the layer below.
hoardr
A cache-directory helper that has shipped nothing but CRAN-triggered patches for seven years.
gigs
gigs redesigned its whole conversion API for rOpenSci, then spent three releases getting the docs to build.
riem
A weather-data client that keeps rewriting its HTTP layer while slowly tightening its API.
Recent activity from crul and parzer
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1y agoparzerFixes dropped negative signs and mis-parsed E longitudes
- 1y agocrulMocking becomes a client parameter, independent of webmockr ⚡
- 2y agocrulAsync requests become mockable through webmockr
- 2y agocrulDocumentation fixes and test helper tweak
- 3y agocrulHTTP retries reach the async classes
- 3y agocrulClearer error for mismatched urls and disk lengths
- 4y agoparzerScope clarified: parsing, not coordinate validation
- 4y agocrulAsyncQueue gains response accessors; results print as a summary
- 5y agoparzerFaster scrub(); works around non-UTF8 locales on Windows
- 5y agoparzerFixes factor conversion in parse_llstr() on older R
- 5y agoparzerparse_llstr() parses latitude and longitude from one string
- 6y agoparzerMore degree symbols recognised; NA handling fixed in C++
Frequently asked questions
What is the difference between crul and parzer?
Both compete on the same themes — ropensci — within Analytics. crul and parzer 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 crul better than parzer?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. crul and parzer 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 Analytics products to evaluate alongside.
What are the best alternatives to crul?
Top crul alternatives in Analytics are ranked by recent ship velocity. Browse the "crul alternatives" section above for the current picks, or visit /alternatives/crul for the full list with editorial commentary on each.
What are the best alternatives to parzer?
Top parzer alternatives in Analytics are ranked by recent ship velocity. Browse the "parzer alternatives" section above for the current picks, or visit /alternatives/parzer for the full list with editorial commentary on each.