It's a tool for testing HTTP servers and Web applications. It supports HTTP/HTTPS protocols, GET,POST and HEAD methods, HTTP proxies, refferes and cookies. It's like HTTP Debugger in network tool AccessDiver or HAS.
Synclair is a tool for diff'ing and synchronizing directories. It also includes a utility to find duplicate files (by name, or md5hash). It is a command line tool, written in Java.