Is Dex open source?

I'm curious to know, is Dex a decentralized exchange platform that is open source? Open source projects are known for their transparency and community involvement, so I'm wondering if Dex adheres to these principles. Could you please clarify whether Dex's codebase is freely accessible for anyone to review, modify, and contribute to? Additionally, does the platform prioritize transparency in its operations and decision-making processes?