XGterm provides a Tek 4012 compatible graphics terminal emulation for IRAF, plus a datastream driven widget server capability using the Object Manager to provide full access to the underlying toolkit and widget set. The Gterm graphics window operates almost identically to the xterm Tek window, however there are extensions for implementing full-screen cursors, imaging, area fills, colors, graphics erasure, a "status line" and so on.

gztool indexes gzip-compressed files, allowing them to be accessed randomly (instead of from the beginning). It can index existing files, which takes as much time as decompressing the file entirely; it can also compress and decompress files itself, creating optimised indexes as it goes.