pwatch package contains is a some nice set of tools to give info about processes.
Git tree: http://kernel.embedromix.ro/us/pwatch/pwatch.git
Language is C. pwatch is licensed under GPL.
What's New in This Release:
· This release added a warning for users without a recent kernel, renamed "iotop" to "io", improved speed of scrolling, uses netlink for getting statistics about processes (instead of /proc/pid/io, which is racy), and made many small fixes.