Guzzle, an extensible PHP HTTP client

The PHP Unit Testing framework.

Open Source PHP Framework (originally from EllisLab)

PHP errors for cool kids

A PHP Blogging Platform. Simple and Powerful.

A framework agnostic, multi-gateway payment processing library for PHP 5.6+

[Archived] The world's largest independent emoji font. Maintained at https://github.com/joypixels/emoji-toolkit.

码农周刊整理

PHP Payment processing library. It offers everything you need to work with payments: Credit card & offsite purchasing, subscriptions, payouts etc.