OpenIsis provides a library and tools to access CDS/ISIS databases, which are mostly used for bibliographic data (ISO2709, Z39.50) but also well suited for other catalogues due to the very flexible indexing mechanism. Based on a C library, there are also bindings for Perl and Java (Tcl to come).
Chart::Clicker aims to be a powerful, extensible charting Perl package that creates really pretty output. Charts can be saved in PNG, SVG, PDF, and PostScript format. Clicker leverages the power of Graphics::Primitive to create snazzy graphics without being tied to a specific backend.
The TunePimp library is an audio file tagging library that uses MusicBrainz for track identification/lookup. It will attempt to automatically identify the files, and will present the user with possible matches for files that are not automatically identified. Once the files are identified, it writes new metadata tags to the music files and writes the files to a user-defined directory hierarchy. It supports WAV, MP3, Ogg Vorbis, and FLAC files.
Cafeterra is a message queue-based EAI project with a Web user interface for designing, processing, and monitoring inter-application data flows. Supported connectors are based on an RDBMS, flat files (CSV, fixed length record, XML, HL7, HTML, etc.), LDAP, and SOAP, with others planned. The main features are message tracking and archival, joining different connectors, an internal scheduler, and raising the flow on events.
Perl-LZO (aka Compress::LZO) provides Perl bindings for the LZO data compression library. You can access the LZO library from your Perl scripts thereby compressing ordinary Perl strings. LZO is a portable lossless data compression library written in ANSI C. It offers pretty fast compression and very fast decompression. Decompression requires no memory. In addition there are slower compression levels achieving a quite competitive compression ratio while still decompressing at this very high speed.
OpenPlugin is an architecture written in Perl which manages plugins for Web applications. It allows you to incorporate any number of plugins and drivers into your Web application. For example, the Log plugin has drivers for logging to STDERR, files, syslog, email, and so on. The Session plugin has drivers for storing sessions in files, databases, and the like. Changing drivers is easy; you just change the driver name in a config file. There are plugins which abstract Apache::Request and CGI.pm, allowing you to build applications that can work seamlessly under mod_perl or CGI. If you want to move your application from one environment to another, you can just change the driver being used in the config file.