# Reference 0. []() 0. [EULAs Aren’t Inherently Evil: proprietary done right can beat free and open for users](https://writing.kemitchell.com/2022/04/22/EULAs-Arent-Inherently-Evil) 0. [Open Source Policy with Bruce Perens](https://www.owltail.com/people/rRld1-bruce-perens/appearances) 0. [Post-Open Source License – Early Draft](https://perens.com/2020/10/06/post-open-source-license-early-draft/) https://perens.com/wp-content/uploads/sites/4/2020/10/PO_License_Draft.pdf 0. [What Comes After Open Source](https://www.youtube.com/watch?v=vTsc1m78BUk) 0. [Bruce Perens - Building a 'billion dollar' startup with Crystal and Lucky | Crystal 1.0 Conference](https://www.youtube.com/watch?v=XRl-it1-ruI&list=PLe1-A91ZPTpBBrrIV-N_fMmCWbFM4Uj4v)