@brandonblack/musig
JS implementation of MuSig. 1-dependency MuSig key aggregation, tweaking, and signing.
bip-schnorr
Pure JavaScript implementation of the BIP schnorr signature scheme and the muSig multi-signature scheme
j-bitcoin
Comprehensive JavaScript cryptocurrency wallet library for Bitcoin (BTC), Bitcoin Cash (BCH), and Bitcoin SV (BSV) with custodial and non-custodial wallet support, threshold signatures, and multiple address formats