The standard distribution ships with the following tools:
Documentation generator
The builtin document generator nim doc2 generates HTML documentation from .nim source files.
Nimsuggest for IDE support
Through the nimsuggest tool, any IDE can query a .nim source file and obtain useful information like definition of symbols or suggestions for completion.
Nim Installation Generator
How to generate a nice installer for your Nim program.
C2nim
C to Nim source converter. Translates C header files to Nim.
nimgrep
Nim search and replace utility.
endb
Nim's slow platform independent embedded debugger.
estp
Nim's slow platform independent embedded stack trace profiler.
nimfix
Nimfix is a tool to help you upgrade from Nimrod (<= version 0.9.6) to Nim (=> version 0.10.0).