nwfiir and its accompanying software wfird allow design and use of a HiFi quality digital equalizer based on a WFIR filter (Warped Finite Impulse Response). It can take advantage of multiple processors, e.g. on a dual Pentium II 300 MHz it manages to run a two-channel equaliser with 275 taps, with 16 bit 44.1 kHz input, and 24 bit 44.1 or 88.2 kHz output. This is more than enough to very precisely equalize the whole audible range from 20 to 20000 Hz. The equalizer can be used as, and was designed for, a key component in a room equalization system. Non-realtime operation is also possible on slower machines.
Obsidian is an extensible virtual world system with a fullblown multiplayer client-server architecture. It is not a VRML2 world system, though there are plans to include VRML2 as a world data format. Note that active development on this system stopped a while ago, though the code is still available for the curious. The code may not even compile on current Linux or Irix systems.
ODBC Socket Server is a database access toolkit that exposes Windows NT ODBC data sources via an XML-based TCP/IP interface. The base distribution includes a 32-bit multi-threaded Windows NT Service and clients written using COM (Windows C++), Perl, PHP, Python, and C++ (Linux). Most clients include source code and everything is very well documented in an easy to read PDF manual.
Open Distributed Data Acquisition System Linux is a mini distribution of GNU/Linux intended for use on the ODDAS project. It contains a shell and some basic commands plus servers for HTTP, FTP and telnet. It also includes the capability to perform syslog over the network, and contains a very simple mail program which allows alerts to be forwarded across the network. The whole thing squeezes into about 3M of flash on an Intel [3-6]86 processor.