Fortran Unit Test Framework (FRUIT)
Fytest - lightweight unit testing framework for Fortran. Thanks to its header-only design, it can be easily bundled with any Fortran project without creating extra dependencies.
toast - Testing Or ASsertion Toolkit - Fortran unit testing library
FortUTF - Unit Test framework written purely in Fortran to be compatible with as many projects as possible
XFunit - Native Fortran 2003 Unit Testing Framework