Open Watcom consists of the famous Watcom C++ and WATFOR compilers -- now open source. Open Watcom is mainly used for developing embedded, DOS, and ncurses software. Open Watcom includes the C/C++/Fortran IDE from Watcom for DOS and a full set of command-line tools for compilation, including the superb Watcom debugger. Open Watcom emits easy-to-understand errors and warnings when things go wrong. Open Watcom generates small statically linked binaries for Linux, Win32, Win16, OS/2, QNX, NetWare, and MS-DOS real and protected mode, among other targets. However, Open Watcom is still only beta-quality on Linux and BSD. The two most serious issues are imperfect C++ template support and an inability to dynamically link with shared libraries built by GCC. Also, Open Watcom is released under the Sybase Open Watcom Public License, which is considered non-free by most Debian Linux developers. NOTE: Open Watcom binaries for Linux are not available anywhere. You must build it yourself. 1.5 has known build issues on Linux; use version 1.4 or the current daily build instead.
DAViCal is a server implementation of the CalDAV protocol for storing calendaring resources (in iCalendar format) on a remote shared server. An increasing number of calendar clients support the maintenance of shared remote calendars through CalDAV including Mozilla Calendar (Sunbird/Lightning), Evolution, Mulberry, Chandler, and various other closed-source products such as Apple's iCal and iPhone. DAViCal supports basic delegation of read/write access among calendar users, multiple users or clients reading and writing the same calendar entries over time, and scheduling of meetings with free/busy time displayed.
Horde Groupware Webmail Edition is an enterprise ready browser-based communication suite. Users can read, send, and organize email messages and manage and share calendars, contacts, tasks, and notes with the standards compliant components from the Horde Project. It bundles the separately available applications IMP, Ingo, Kronolith, Turba, Nag, and Mnemo. It can be extended with any of the released Horde applications or the Horde modules that are still in development, like a file manager, a bookmark manager, a forum, or a wiki.
Kahua is a continuation passing style (CPS) application framework and server. It is written using the Gauche implementation of Scheme. It has the advantage that you can use "continuations" easily, so you can solve the typical Web application's problem of process disconnection. It allows you to program declaratively by using S-expressions as a fundamental data type, you can use Kahua's Object Database to persist data, and you can modify the function being run, supporting incremental development.
The CryptoNAS project wants to bring data encryption to the masses. It provides two packages: CryptoNAS-Server and CryptoNAS-CD. The CryptoNAS-Server package adds hard disk encryption to a file server (running Samba, NFS, DAV, etc.) without annoying its users. The CryptoNAS-CD is targeted at users who want to set up an encrypting file server without bothering about complicated administration issues.
Sciret is an advanced knowledge base system designed to be very user-friendly. It allows you to share articles via social sites like reddit, Digg, etc. Users have the ability to only show categories they want. You can be notified by RSS feads about changes in or additions to Sciret. Each user can bookmark his own preferred articles, bookmarks, or search results. When enabled, users can rate and comment articles. For SPAM protection, you can choose between akismet, typepad, or antispam as plugins. Attachments can be scanned for viruses or other threats with ClamAV. The knowledge base is localized in many languages and can be easily translated into others. Other functionality includes private or public To-Do, simple and advanced search, print view for articles, the ability to send articles by email to a friend as an attachment, and the ability to store articles as drafts.
AKVIS Sketch is a program for conversion of photos into pencil sketches and watercolor drawings. It can make any photo look like a black-and-white or color drawing, and it can imitate the techniques of graphite or color pencils, charcoal, or watercolor painting. The program works in an entertaining way. It allows you to observe the conversion of a photo into a drawing or watercolor in real time, and even lets you interrupt the process when the required result is achieved. Its special effects can be used to create a blend of a drawing and a photo, imitate motion, or add a "time machine effect" by swirling the background. It can accentuate certain parts of an image by blurring the rest of it.
TYPOlight is a content management system (CMS) for people who want a professional Internet presence that is easy to maintain. The state-of-the-art structure of the system offers a high security standard and allows you to develop search engine friendly Web sites that are also accessible for people with disabilities. Furthermore, the system can be expanded flexibly and inexpensively. It features easy management of user rights, a Live Update Service, a modern CSS framework, and many already integrated modules (news, calendar, forms, etc.).
Schoorbs is a system to make room and resource bookings through a Web 2.0 GUI. You can also interact with it through a REST API. It allows you to book rooms and resources grouped by areas. Activity can be logged via a simple logging interface. The code is automatically tested by several unit tests. The interface can easily be styled through the usage of a template system. Schoorbs produces valid XHTML 1.1 output, has packages for Debian and Ubuntu, and is well documented online.