Symutils is a collection of tools to manage symlinks, implemented in Go Programming Language. This one can became real handy if you're “tag”ging your files by means of creating symlinks under category-directories. Or just happen to have dozens of troublesome symlinks around.
(Ancient sources can be found here.)
replsym(1) finds symlinks pointing to a target, or targets described by a pattern, and replaces them with a given, new target. lssym(1) looks for (common) symlinks under given directories symfix(1) finds and (somewhat interactively) repairs broken symlinks. xlocate(1) is an alternative to locate. Common options are (mostly) compatible with GNU locate.