Kimwitu is a system that supports the construction of programs that use trees or terms as their main data structure. It is a `meta-tool' in the development process of tools. Its input is an abstract description of terms, annotated with implementation directives, plus a definition of functions on these terms. The output consists of a number of C-files that contain data-structure definitions for the terms, a number of standard functions on those terms, and a translation (in C) of the function definitions in the input (eg. term rewriting). The standard functions can be used to create terms, compare them for equality, read and write them on files in various formats and do manipulations like list concatenation. WWW: http://purl.oclc.org/net/kimwitu/