If you have been following the Confidential Computing space, you would have noticed that many Software Development Kits (SDKs) that use Trusted Execution Environments (TEEs) are pursuing the open-source route.
It might seem counter-intuitive that the SDKs promoting privacy-first computing allow their source code to be visible for everyone to see. However, open-sourcing an SDK is essential to improve the trust and transparency of a privacy-enhancing technology.