Stubs for PHP core and third-party extensions for auto-completion, or static analysis
[ALPHA] Zend Framework 2.* - Facebook, Twiiter, Google and LinkedIn Connect.
Various frameworks benchmarks made by third-parties
PHP client library for the Google Photos Library API
One-click WordPress plugin that converts all posts, pages, taxonomies, metadata, and settings to Markdown and YAML which can be dropped into Jekyll
WordPress API Mocking Framework
Easy integration with OAuth 2.0 service providers.
Google Ads API Client Library for PHP (AdWords and Ad Manager)
CMB2 is a developer's toolkit for building metaboxes, custom fields, and forms for WordPress that will blow your mind.