UnitTest++ is a lightweight unit testing framework for C++.

It was designed to do test-driven development on a wide variety of platforms. Simplicity, portability, speed, and small footprint are all very important aspects of UnitTest++.

Platform:Windows                                                                     License:MIT/X Consortium license

Reference:https://unittest-cpp.sourceforge.net/

cfix is an xUnit testing framework for C/C++, specialized for unmanaged Windows development (32/64 bit). cfix supports development of both user and kernel mode unit tests.

cifx unit tests are compiled and linked into a DLL. The testrunner application provided by cfix allows selectively running tests of one or more of such test-DLLs. Execution and behaviour in case of failing testcases can be highly customized. Moreover, cfix has been designed to work well in conjunction with the Windows Debuggers (Visual Studio, WinDBG).

Platform:Windows                                                                    License:GNU Library or "Lesser" General Public License version 3.0 (LGPLv3)

Reference:https://www.cfix-testing.org/unit-testing-framework/windows/

CUT is a simple, to-the-point unit testing system. It's different from other unit test packages in that it follows the KISS principle. It's designed for C testing, not designed to emulate SUnit.

Platform:OS Independent                                                                  License:zlib/libpng License

Reference:https://sourceforge.net/projects/cut/

A simple unit testing framework for C based on the xUnit style of unit testing. Ideal for Test Driven Development ( TDD ). Designed to be portable.

Platform:unknown                                                                    License:MIT License

Reference:https://code.google.com/p/seatest/

CUnitWin32 is a unit testing framework for C/C++ for Microsoft Windows

Platform:Windows                                                                    License:GNU Lesser General Public License

Reference:https://code.google.com/p/cunitwin32/

RCUNIT is a robust C unit testing framework. Requiring only an ANSI compliant C compiler, RCUNIT is a highly portable unit testing tool.

Platform:Corss-platform;                                   License:GNU General Public License (GPL)

Reference:https://rcunit.sourceforge.net/

There are a variety of C unit testing frameworks available however many of them are fairly complex and require the latest compiler technology. Some development requires the use of old compilers which makes it difficult to use some unit testing frameworks. In addition many unit testing frameworks assume the code being tested is an application or module that is targeted to the same platform that will ultimately execute the test. Because of this assumption many frameworks require the inclusion of standard C library headers in the code module being tested which may collide with the custom or incomplete implementation of the C library utilized by the code under test.

Platform:unknown                                                                    License:Apache License 2.0

Reference:https://code.google.com/p/cmockery/