Litecoin is a peer-to-peer cryptocurrency and open-source software project released under the MIT/X11 license. Litecoin was an early bitcoin spinoff or altcoin, starting in October 2011. In technical details, Litecoin is nearly identical to Bitcoin.
Ripple Labs, Inc. is an American technology company which develops the Ripple payment protocol and exchange network. Originally named Opencoin and renamed Ripple Labs in 2015, the company was founded in 2012 and is based in San Francisco, California.
Monero is a privacy-focused cryptocurrency released in 2014. It is an open-source protocol based on RandomX formerly CryptoNote. It uses an obfuscated public ledger, meaning anyone can send or broadcast transactions,but no outside observer can tell the source, amount.
Bitcoin is a cryptocurrency invented in 2008 by an unknown person or group of people using the name Satoshi Nakamoto. The currency began use in 2009 when its implementation was released as open-source software.