OPAS is an online system that allows students to submit project and thesis proposals without difficulties. It has advantages like being easy to use, responsive design, advanced technology, and security. Students and authorized administrators can use OPAS. Students submit proposals as front-end users, while administrators manage proposals as back-end users. The system works by verifying student details during submission and notifying users by email. It stores proposal and member information in databases to track submissions. Future work aims to expand OPAS to all university departments and enhance security.