PHPOffice / PhpSpreadsheet

A pure PHP library for reading and writing spreadsheet files

phpspec / phpspec

SpecBDD Framework for PHP

mockery / mockery

Mockery is a simple yet flexible PHP mock object framework for use in unit testing with PHPUnit, PHPSpec or any other testing framework. Its core goal is to offer a test double framework with a succinct API capable of clearly defining all possible object operations and interactions using a human readable Domain Specific Language (DSL).