Bulletproofs was later implemented into Mimblewimble protocol (the basis for Grin and Beam, and Litecoin via extension blocks) and Monero cryptocurrency.
Later on, Bulletproofs technology was incorporated into the Mimblewimble protocol, which serves as the foundation for other cryptocurrencies such as Grin and Beam, as well as Litecoin through the use of extension blocks, and is also used in Monero.