Ghostscript is a processor for PostScript and PDF files. It can rasterize these files to a wide variety of printers, devices for screen preview, and image file formats. Since applications tend to prepare pages for printing in a high-level format such as PostScript, most Unix users with low-level bitmap printers, such as inkjets, use GhostScript as part of the printing process. In addition, Ghostscript is capable of converting PostScript files, functionality comparable to Adobe Acrobat Distiller, but on the command line. In addition, Ghostscript is used for file import and viewing by a great many other applications, including xv, ImageMagick, gimp, and xdvi. Several GUI wrappers for viewing PostScript and PDF files exist, including GSview, ghostview, gv, ggv, and kghostview. This is far from a comprehensive list.
GNU ccScript offers a class extensible threaded embedded scripting engine for use with the Common C++ GNU package. This engine is also used in Bayonne (the GNU telephony server), and in TOSI (FreeBSD and GNU/Linux PBX integration servers). This engine differs from traditional scripting systems in that it is used to script near real-time state-event systems through deterministic callback step execution rather than the linear and non-deterministic fashion of embedded script libraries such as tcl, and libguile.
db4o is an object database for Java and all .NET environments. Its features include ACID transactions, automatic class schema recognition, query-by-example, a S.O.D.A. object querying API, native queries, LINQ support on .NET, callback methods, memory files, cascade-on-delete, multi-threaded access, and Java Webstart and servlet support.
Drupal is a modular content management system, forum, blogging and community engine. It is database driven and can be used with MySQL, MariaDB, PostgreSQL, and SQLite. Its features include (but are not limited to) discussion forums, Web-based administration, theme support, a submission queue, content rating, content versioning, taxonomy support, user management with a fine-grained permission system based on user roles (groups), error logging, support for content syndication, locale support, and much more. It is considered to be an excellent platform for developers due to its clean code and extensibility, and it can also be used as a Web application framework.
gfortune is a replacement for the traditional Berkeley fortune program included with the BSD games package. This implementation supports recursion down a tree of fortune files, the option to limit the number of lines output (for scripting), and other features. It fully maintains the functionality of the original. It includes the author's own archive of fortune files.
Newscoop (formerly known as Campsite) is an open content management system for professional journalists. Features for the modern newsroom include multiple author management, issue-and-section based publishing, geolocation, and multilingual content management. The enterprise-standard journalist’s dashboard and a templating engine supporting anything from HTML5 to mobile complete this fast production and publishing system.
jGnash is a personal finance application written in Java. Java 7 is required. jGnash supports several account types, including investment accounts. It has support for split transactions, nested accounts, scheduled transactions, commodities, and currencies. It can import OFX and QIF files, excluding investment accounts and transactions. Data is stored in an XML format so it is easy to manipulate and read the data external to the program. jGnash also has scripting support to add custom reports and functionality.
Poweradmin is a friendly Web-based DNS administration tool for Bert Hubert's PowerDNS server. The interface has full support for most of the features of PowerDNS including all zone types (master, native, and slave), supermasters for automatic provisioning of slave zones, full support for IPv6, and support for multiple languages.
Enhydra JaWE (Java Workflow Editor) is an XPDL2.1 based graphical workflow process editor fully adhering to WfMC specifications. It can be used to edit or view any XPDL file which conforms to WfMC specifications. It works with several open source and commercial workflow engines, like Enhydra Shark, WfmOpen, OBE, and OfBiz. It has participated in a WfMC interoperability demo where it was used to handle XPDLs from Fujitsu, TIBCO, and the Enhydra Shark engine.