HQ is a simple curses-based addressbook and note management software. It supports adding, updating, and removing of contacts and notes, sending SMS and email, different sort orders, birthday and note reminders, and other features. Contacts and notes are stored in an SQL database. Color and mouse support is provided.
ExifTool is a platform-independent Perl library plus a command line application for reading, writing, and editing meta-information in image, audio, and video files. It supports many different types of metadata including EXIF, GPS, IPTC, XMP, JFIF, GeoTIFF, ICC Profile, Photoshop IRB, FlashPix, AFCP, and ID3, as well as the maker notes of many digital cameras.
SiLK (System for Internet-Level Knowledge) consists of two sets of tools: a packing system and an analysis suite. The packing system receives Netflow V5 PDUs or IPFIX and converts them into a more space efficient format, recording the packed records into service-specific binary flat files. The analysis suite consists of tools that can read these flat files and then perform various query operations, ranging from per-record filtering to statistical analysis of groups of records. The analysis tools interoperate using pipes, allowing a user to develop a relatively sophisticated query from a simple beginning.
The metric implemented in the Image::Density Perl Module estimates the density of data where there is data, and has a reasonable correlation with goodness as judged by humans. That is, if you let a human look at a set of images and judge quality, the density values for those images as calculated here tend to correlate well with the human judgement (densities that are too high or too low represent "bad'' images). It is intended for use on bitonal TIFF images, such as those from scanning paper documents.
Search::Xapian is a Perl XS frontend to the Xapian C++ search library. It is a fairly complete wrapper: most features of the Xapian library are made available for use from Perl. Xapian is a highly adaptable toolkit that allows developers to easily add advanced indexing and search facilities to their own applications. It supports the Probabilistic Information Retrieval model as well as a rich set of boolean query operators. It's fast and scalable to hundreds of millions of documents.
Autodia is a command line Perl application that generates UML class diagrams from source code, SQL, and database connections. It supports multiple programming languages including SQL, and can output images (using GraphViz/VCG/SpringGraph), Dia XML and Umbrello XML, or custom formats using templates.
Stunnix Advanced Web Server is a Web server for putting Web sites onto CD-ROMs, DVDs, FlashDisks, and other readonly media to be used on any typical system. Sites can be scripted with PHP, Python, Java, or Perl and can be driven by MySQL or SQLite databases. All required software programs are designed to reside on the CD-ROM to avoid the need to install software on the user's computer. The Web serving core is based on Apache 1.3.x, and has additional functionality to detect and use free ports and automatically start a browser on each platform. Desktop applications can also be created with it.
Easy SVN is a subversion browser via the Web. It's easy because only a command line svn program and Perl are required to run it; no extra software needs to be installed. After configuring the Perl script as cgi-bin program, SVN repositories can be navigated, and entries viewed for contents, history, and diffs.
blurt is Web publishing ("blogging") software. Unlike most blogging software, it does not provide you with a fancy back office, heavy duty database backends, and massive user management systems. Instead, you upload documents ("posts") in simple text format (.txt) to a directory on your Web server. blurt will figure out the rest.