Rogue Wave employs a number of PHP core contributors
Dmitry Stogov developed much of the basis for the PHP 7 Engine (codenamed phpng at the time) while at Zend
Dmitry and others at Rogue Wave are working on JIT-compilation for PHP
The Zend Framework
Component-based framework
Focusses on configuration over 'magic'
Promotes best-practices and maintainability over rapid development
Used by a lot of large organizations
Backed by a stable company
What's new in version 3?
The framework is now decoupled across 61 'component' repositories instead of all the components living in a single repository - this promotes component re-use