GLIF is a prominent contributor to the Filecoin network, having developed critical apps and tools since the pre-Mainnet days. Notable contributions include the first Filecoin wallet, a multisig wallet for the Filecoin SAFT ICO distribution, and the introduction of GLIF Pools, Filecoin's premier DeFi protocol. GLIF facilitates "liquid leasing" for Filecoin, enabling users to earn yield by lending their FIL tokens to storage providers, bridging the gap between token holders seeking yield and storage providers generating it on the Filecoin network.