jsrsasign
opensource free pure JavaScript cryptographic library supports RSA/RSAPSS/ECDSA/DSA signing/validation, ASN.1, PKCS#1/5/8 private/public key, X.509 certificate, CRL, OCSP, CMS SignedData, TimeStamp and CAdES and JSON Web Signature(JWS)/Token(JWT)/Key(JWK)
node-jsrsasign
pure JavaScript cryptographic library(jsrsasign) and JSON Web Token (JWT) and JSON Web Signature (JWS) library (jsjws) bundle
sm2
sm2,sm3,cryptojs,crypto,base64,rsa,aes crypt
typepki-webcrypto
W3C Web Crypto API helper function sub module for TypePKI library (beta)