Gtk-Gnutella is a full-featured Gnutella client using GTK+. It contains all widely deployed Gnutella features, including DHT support. It is extremely efficient, using little CPU time and memory. It is meant to be left running 24x7. It is fully compatible with UPnP and NAT-PMP, and as such is easy to use behind a firewall supporting one of these port mapping technologies.
Eukleides is a computer language devoted to elementary plane geometry. It aims to be a fairly comprehensive system to create geometric figures, either static or dynamic. It can handle geometric types of data like points, vectors, lines, circles, or conics. A Eukleides script usually consists of a declarative part where objects are defined and a descriptive part where objects are drawn. Nonetheless, Eukleides is also a full featured programming language, providing conditional and iterative structures, user defined functions, modules, etc. The Eukleides distribution provides two distinct interpreters: "eukleides" and "euktopst". The former interpreter produces Encapsulated PostScript (EPS). The latter produces PSTricks macros, allowing Eukleides to be used with LaTeX.
Jackbeat is a multi-platform audio sequencer for musicians and sound artists. Featuring a drum machine interface with animations for easy and playful editing, it is built for both composition and live setups with high interactivity needs. It is extremely easy to use yet powerful via connecting with other applications and plugins using JACK and OSC. Jackbeat loads and saves .jab files, Jackbeat's xml+tar open file format, and supports CoreAudio, ASIO, ALSA, PulseAudio, and JACK.
jabberd is a Jabber/XMPP instant messaging server. It implements XMPP-Core (RFC3920), XMPP-IM (RFC3921), and a range of protocol extensions: XEP-0012, XEP-0016, XEP-0030, XEP-0049, XEP-0054, XEP-0077, XEP-0079, XEP-0092, XEP-0114, XEP-0138, XEP-0153, XEP-0157, XEP-0160, XEP-0191, XEP-0192, XEP-0193, XEP-0198, XEP-0199, XEP-0202, XEP-0203.
cclite is a lightweight implementation of a community currency registry for local exchange trading systems (LETS) and other alternative money systems. It uses multi-registry, multi-currency, Web-services-based (SOAP) transactions, and is templated to give multi-lingual properties. As of 2009, it has an SMS interface and versions for Debian, cpanel-based, Fedora and Windows XP. As of 2012 it has decimal currencies, templates for many languages, and a REST-style interface for integration with CMS and social networking software.
Grapple is designed to be a simple network layer, allowing the addition of multiuser features to an application for as little as a dozen lines of code. However, it also allows for more. It features simple client-server networking that keeps all clients aware of all other clients, passworded servers, and data transfer via TCP, UDP, or reliable UDP. Advanced features include network messaging via push, pull, or a combination, multiple methods of querying users, user groups for client bandwidth saving, network load reacting data transmission and retransmission, background pinging to monitor network states, server failover, and a fully functional lobby system.
QP is a family of lightweight and portable frameworks for modeling and coding UML state machines in C or C++. Designed for real-time embedded systems, QP can replace an RTOS or work with one. It has been ported to many MCUs (ARM Cortex-M3/M0, ARM7/9, MSP430, TMS320C28x, AVR, PIC18/PIC24/dsPIC, M16C/R8C, H8, 68HC08, ColdFire, PSoC, NiosII, 8051/80251, PSoC) and OSs (Linux/POSIX, Win32, VxWorks, QNX, ThreadX, uC/OS-II).