tinyldap is a small (11k uncompressed static binary on x86 Linux) and fast (1000 equal queries for one of 3000 records in less than one second on a 1.3 GHz Athlon, with over 3000 separate TCP connections using tcpserver) read-only LDAP server. No tricks like file descriptor passing, thread pools, or caching are used (aside from the buffer cache from the operating system).
tn5250 is a 5250 terminal emulator, used for connecting to IBM's AS/400 (now known as eServer iSeries) midrange computers. tn5250 implements TN5250E, which means it is capable of device name selection, and printer sessions. The emulator supports color, 132 column mode, and most other features found in 5250 terminals and Client Access' 5250 emulator. While tn5250 is text-based application, a script is included to run it in an xterm properly. If you don't know what an AS/400 is, this program will probably not be of much use to you.
trend is a general-purpose, efficient trend graph for "live" data. Data is read in ASCII format from a file or continuously from a FIFO, and is played in real-time into a multi-pass trend (much like a CRT oscilloscope or a strip chart). trend can be used as a rapid analysis tool for progressive or time-based data series together with trivial scripting.