The Tools application contains a number of stand-alone tools, which are useful when developing Erlang programs.

cover - A coverage analysis tool for Erlang. cprof - A profiling tool that shows how many times each function is called. Uses a kind of local call trace breakpoints containing counters to achieve very low runtime performance degradation. eprof - A time profiling tool; measures how time is used in Erlang programs. Predecessor of fprof (see below). fprof - Another Erlang profiler; measures how time is used in Erlang programs. Uses trace to file to minimize runtime performance impact, and displays time for calling and called functions. instrument - Utility functions for obtaining and analyzing resource usage in an instrumented Erlang runtime system. make - A make utility for Erlang similar to UNIX make. tags - A tool for generating Emacs TAGS files from Erlang source files. xref - A cross reference tool. Can be used to check dependencies between functions, modules, applications and releases.