document updated 13 years ago, on Jul 7, 2011

Ways to do mass-grep or otherwise analyze the data that's available in your local mirror:

downloading
- CPAN::Cache
dealing with problems related to searching through gzipped-tarballs
interrogating the metadata that's available to ANYONE, even those who don't create a local mirror
- CPAN::Index
- BackPAN::Index
interrogating the data that's available, within ANY CPAN repository
synthesizing data
- MyCPAN::App::DPAN
- CPAN::Metrics
- WAIT's 'cpanwait' — what search.cpan.org uses
- dependencies
  - Module::Depends::Tree
  - Perl::PrereqScanner
  - CPAN::Dependency
  - CPAN::FindDependencies
  - CPAN::Unwind
    - Module::Depends::Intrusive
nice ways to browse the data
- CPAN::Mini::Webserver
- CPAN::Mini::ProjectDocs
attempts to index various CPAN data
- CPAN::Digger
- MetaCPAN::API
- CPAN Tester's Metabase
- CPAN::Search::Lite
- CPAN::Mini::Indexed
- DPAN — generates the 02packages.details.txt.gz file from a bunch of disparate directories... though this really isn't needed for CPAN::Mini, because that tool downloads the 02packages.details.txt.gz file that exists on the server
ways to create a complete search engine
- Kasago
- Perl::Tags (ctags files can be searched somewhat easily — they are sorted by tag name, so that binary search can be performed)
  - File::SortedSeek
  - Gzip::BinarySearch — wow...