I am Freelancer and develop backend-applications in PHP 5.3 / 5.4, Zend Framework and Symfony 2.
Oliver Tischlinger is a member of the community since September 2012.
Library for working with cash-flow, annuity, net present value and interest
Library to handle with chronological tables and timetable
Doctrine implementation of the MetaborStd (Statemachine)
Meta-Heuristic library for optimization problems
Collection of maximal independent PHP Interfaces
Symfony 2 Boilerplate For Building Web Applications (based on symfony-standard with integrated bundles)