Nowadays, two types of approaches are used to formulate and publish patterns. On the one hand, patterns are formulated by a group of authors and are published in a printed medium. Hence no feedback is provided outside of the author group unless they approach other authors. Also, the printed patterns cannot be edited unless a reworked version of the printed medium is published. On the other hand, patterns are formulated as well as published on online platforms. These pattern platforms offer collaborative mechanism to enable a community-based pattern formulation. All of the existing ones focus on specific domains and do not support the concept of maturing patterns. Hence, this thesis covers a concept for a collaborative formulation platform for maturing patterns, which supports multiple pattern languages. The concept introduces a pattern maturing process, along with a set of collaborative mechanisms to enable it. Furthermore, a role and permission model is presented to support different user requirements for the platform and prevent misusage of it. As part of this thesis, a prototype with the introduced concepts was implemented.