ASIS (Ada Semantic Interface Specification) lets you develop applications to walk through the sources of your Ada programs and examine the semantic constructs.

* asistant is an interactive command-line tool to explore the ASIS parse tree of a program. * gnatcheck verifies the conformance of source text to coding conventions * gnatelim finds out unused subprograms and eliminates them. * gnatmetric calculates metrics such as code complexity. * gnatpp is a pretty-printer which reformats Ada source text according to a default or user-specified style guide. * gnatstub generates an empty but compilable body for a given specification. * gnattest creates AUnit test skeletons and harness for a project (gnattest requires the libaunit development package to be installed)