What open-source encryption libraries and applications should we be cloning?

In the face of bills such as the EARN IT [0] act, what open source libraries and applications, related to encryption, should we archive so that we still have access to privacy online if it passes?

Additionally, what kind of resources does everyone have prepared to prevent their OSes and such from being updated to decrypt or otherwise make us less secure?

[0] - https://www.eff.org/deeplinks/2020/03/earn-it-bill-governments-not-so-secret-plan-scan-every-message-online