Extrect selected entries from LDIF files like grep
ldif-extract is a small 'grep' like tool to extract and convert data from LDIF files. It could be used standalone or also in a pipe together with other tools like ldapsearch.
GrepClipse is an easy way to filter an Eclipse console's content through a regularexpression as you'll do it on a *nix console through the commands grep -n <regexpr> <currentConsoleContent> followed by tail -nf <newConsoleContent> | grep <regexpr> helping the analysis of logs during the execution of a process.
cfgrep is an attempt to produce a grep-like program that uses regular expressions extended to describe context-free grammars. The largest part of the project is the C++ library developed to process those expressions.