Ledger is a company that develops hardware wallets, secure element chips, and software like the Ledger Live app to enable individuals and companies to securely buy, store, swap, and manage digital assets, particularly crypto assets. They offer customizable infrastructure solutions for banks, hedge funds, and high net worth individuals, with over 7 million devices sold. Founded in 2014 by experts to secure the blockchain revolution, they operate across multiple industries on blockchain use cases.