Class autoloading is one of more commonly used features in PHP 5. It simplifies the application development, freeing us from manual dependency management. On the other hand, many projects developed custom class naming standards and autoloaders that were incompatible one with another. Currently more and more programmers notice the benefits that come from accepting a single, widely implemented convention. In this article we are going to introduce Open Power Autoloader, a collection of universal, fast autoloaders for PHP 5.3 compatible with PSR-0 class naming convention adapted by such projects, as Zend Framework or Symfony 2.