Limine
Limine is an advanced x86/x86_64 BIOS and UEFI bootloader that supports modern PC features such as Long Mode, 5-level paging, multi-core startup, and more thanks to the stivale and stivale2 boot protocols.
Chimera is a Hackintosh bootloader that merges the best features from various branches of Chameleon bootloader, into a new branch based on the latest Chameleon 2.0 RC5 trunk version. It is designed for maximum compatibility across platforms. The focus of Chimera is to support current, new, and future hardware, not to add legacy support for older hardware.