lisodsp is a multi-open device driver for Linux. It is a kernel module that installs a OSS DSP device which can be opened many times in write mode. Reading the device produces a mix of all opened channels. lisodspd is a full-featured user space daemon which forwards audio data to a real OSS device. In addition lisodspd allows the user to set up a filter between a lisodsp device and the real OSS device. The device supports all linear formats (8/16 bit, little/big endian, mono/stereo) in a wide sampling range (4800 to 48000Hz).
MemMXtest is a computer program for "IBM-compatible" PCs that checks the computer's main memory for faults and defects. (Note however, that no program can be guaranteed to detect all faults, due to their very nature.) This program is aimed specifically at testing SDRAM memory modules (`DIMMs'), and uses MMX instructions to read/write all 64 databits provided by these modules at once. MemMXtest incorporates many well-known `march' tests, as well as several pseudo-random tests. The vital parts of each test use manually optimized machine code for maximal speed. The program is "stand-alone" (i.e. doesn't require an OS to run), and compiles on Linux.