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CPPUnit - CppUnit is the C++ port of the JUnit framework for unit testing.
PHPTester.net - PHPTester.net gives developers and learners the ability to write their PHP code and get the output online.
Google Test - Google Test is a unit testing for C++ programming language that is based on xUnit architecture.
PHPCodeChecker - PHPCodeChecker is a best-in-class service that enables developers and PHP programmers to write their code online and analyze it.
Cantata - "Module testing early during development is becoming more important due to the increasing complexity of software.
Paiza.io - Paiza.io allows you to write and run code in many languages.