misc-utils is a general purpose function library containing functions for destructive and non-destructive list modification, alternate mapping methods, and various other stuff.
timmatch is an extensible modular pattern matcher for Scheme objects.
These libraries and their documentation are bundled together in the following package. The bundle is, for some reason, called False Hamster:
Here are the individual files which are contained in the package:
Here is the old version of the package, which was written in R5RS: