Towards Zero (Knowledge): Pairing-based Cryptography using CIRCL
There are a few companies I have a good deal of time for. IBM is one company who have existed as a leader for over 100 years, and their research work on cryptography has shown them to be a world-leader. Their work on Hyperledger, too, has shown their leadership in the field. Another company I highly respect for their approach to cryptography is Cloudflare.