CPAN vs R-universe

CPAN is a free archive of Perl software and documentation, with ways to find, download, and install modules. Its homepage lists 33,464,960 modules in 47,830 distributions from 14,750 authors; the archive has been online since October 1995. Visitors can search through MetaCPAN or browse modules, authors, and recent uploads. Modules can be installed with CPAN.pm, and manual installation instructions are available. Dependencies can require other modules, a particular version, or a C compiler. The site also provides Perl source archives and instructions for compiling and installing Perl. Authors submit uploads through PAUSE, which inspects, validates, and indexes them before they propagate to CPAN and its mirrors. For existing package namespaces, PAUSE indexes uploads only from the owner or an authorized maintainer. Its documentation says uploaded modules are tested across dozens of architectures by CPAN Testers. The Ports page lists Perl support for over 100 platforms, including Windows, macOS, and Linux. CPAN is backed by a CDN. The FAQ says CPAN handles questions about its own operation, not debugging users’ code.

R-universe is rOpenSci’s platform for publishing and discovering research software in R. Its searchable catalogue covers R software, articles, and datasets, using R-specific indexing and ranking. Package and universe pages provide detailed information and rendered material. Users and developers can run personal CRAN-like package repositories whether or not they publish packages on CRAN; R-universe builds and deploys packages from Git repositories into installation repositories. It also provides a continuous integration development environment without configuration to help identify potential breakage before release. WebAssembly binary support is experimental. Publishing a packages.json registry requires a GitHub account and the R-universe GitHub app, although package repositories may be hosted on other public Git servers such as GitLab. Unauthenticated APIs support listing universes and packages, retrieving package information, and searching. The service is free at free and is available through web, API, Linux, macOS, and Windows. rOpenSci initiated and governs the platform. R-universe does not vet packages; each universe owner is responsible for policies and quality control.