RingCrypt computes on encrypted data without ever decrypting it: a free, open-source, browser-native engine (RLWE / CKKS / BFV-style ring Z_q[x]/(x^N+1)) built on an NTT / INTT core with a threshold secret-sharing "private mean" demo. Runs on any GPU vendor and in the browser via WASM.
Source: github.com/jesedv/ringcrypt