httpuv
httpuv ships almost nothing, which is what you want from the web server under Shiny
Comparison · DevOps
xml2 vs zip
A side-by-side editorial comparison of xml2 and zip — release velocity, themes, recent moves, and the top alternatives to consider.
xml2 vs zip: at a glance
What is xml2?
xml2 relicensed to MIT, then moved its hot accessors from S3 into C
xml2 is the libxml2 binding under most R HTML and XML work, including rvest. Its release cadence is set by libxml2 versions and R CMD check, but two of the last six matter on their own: the 1.3.3 MIT relicense and the 1.3.6 dispatch rewrite that pushed the common accessors into C and dropped three dependencies.
What is zip?
zip 3.0 added encryption, turning a plumbing package into a complete archive tool.
zip creates and extracts archives from R without depending on external tools. Its 2.x line was incremental — a type column in zip_list(), symlink handling on Unix, hidden shared-library symbols. Version 3.0.0 changed the package's shape by adding password-protected archives and vectorized extraction.
xml2 vs zip: editorial side-by-side
xml2
0.0DEVOPS
xml2 relicensed to MIT, then moved its hot accessors from S3 into C
◆ Current state
xml2 is the libxml2 binding under most R HTML and XML work, including rvest. Its release cadence is set by libxml2 versions and R CMD check, but two of the last six matter on their own: the 1.3.3 MIT relicense and the 1.3.6 dispatch rewrite that pushed the common accessors into C and dropped three dependencies.
◆ Where it's heading
This is infrastructure maintenance in the strict sense - most releases exist because the toolchain moved, not because the package did. Where the maintainers do choose the work, it goes to performance and dependency reduction rather than new API, and the surface has been essentially stable since 1.3.0.
◆ Prediction
Expect the next releases to track libxml2 compatibility and R-devel format-string warnings; new API is unlikely beyond occasional XPath accessors in the style of xml_find_int().
zip
2.5DEVOPS
zip 3.0 added encryption, turning a plumbing package into a complete archive tool.
◆ Current state
zip creates and extracts archives from R without depending on external tools. Its 2.x line was incremental — a type column in zip_list(), symlink handling on Unix, hidden shared-library symbols. Version 3.0.0 changed the package's shape by adding password-protected archives and vectorized extraction.
◆ Where it's heading
Development is moving from listing and extracting toward parity with what users expect of a general archive utility: encryption schemes including WinZIP AES-256, an encryption column so an archive can be inspected before extraction, and thread counts that respect the session's Ncpus setting. The 3.0.x releases since are consolidation on that new surface.
◆ Prediction
Expect continued refinement of the encryption and threading paths, with remaining symlink and permission edge cases on Unix the most likely source of the next fixes.
Alternatives to xml2 and zip
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 xml2 or zip.
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
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
Recent activity from xml2 and zip
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 8d agozipzip 3.0.2 handles symlinks whose targets extract later
- 1mo agozipzip 3.0.1 renames the progress option and respects Ncpus
- 2mo agozipzip 3.0.0 adds AES-256 password-protected archives ⚡
- 1y agozipzip 2.3.3 creates symbolic links correctly on Unix
- 1y agozipzip 2.3.2 returns a tibble from zip_list()
- 2y agozipzip 2.3.1 hides shared library symbols to avoid clashes
- 2y agoxml2Accessors dispatch in C; glue, withr and lifecycle dropped
- 3y agoxml2Small xml_find_all() speedup and check fixes
- 3y agoxml2R CMD check fixes and a Windows libxml2 bump
- 4y agoxml2Relicensed to MIT, with Hadley Wickham back as maintainer ⚡
- 6y agoxml2Rejects multi-element strings; fixes a raw-input regression
- 6y agoxml2Restores reading HTML with non-ASCII encodings
Frequently asked questions
What is the difference between xml2 and zip?
They serve adjacent needs but don't currently overlap on shipped themes. zip is currently shipping more aggressively (velocity 2.5 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 xml2 better than zip?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. zip is currently shipping more aggressively (velocity 2.5 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 xml2?
Top xml2 alternatives in DevOps are ranked by recent ship velocity. Browse the "xml2 alternatives" section above for the current picks, or visit /alternatives/xml2 for the full list with editorial commentary on each.
What are the best alternatives to zip?
Top zip alternatives in DevOps are ranked by recent ship velocity. Browse the "zip alternatives" section above for the current picks, or visit /alternatives/zip-r for the full list with editorial commentary on each.