OpenCore

OpenCore is a bootloader distributed with a development SDK. Its repository includes UEFI support libraries for Apple-specific UEFI drivers, including support for Apple disk image loading and PNG image manipulation. Security-related components provide Apple PE image signature verification and supplemental Apple UEFI secure boot code. For kernel work, the libraries support XNU kernel driver injection and include a patch engine; plist parsing handles configuration files. OcGuardLib implements safe integral arithmetic, type-alignment checks, and a UBSan runtime. The project lists UEFI and BIOS support, multiboot, boot-entry editing, and boot-menu customization. It is free and open source under the BSD-3-Clause license, with Linux, macOS, Windows, and self-hosted listed as platforms. Release source archives are available as ZIP and tar.gz files, including version 1.0.7. The README points users to discussion forums in Russian, German, English, and Italian, including KVM configuration discussion. Documentation also lists third-party kernel extensions and says that list is informational and provided without warranty.

OpenCore combines bootloader features with libraries for Apple-specific UEFI, kernel, configuration, and safety tasks. Review the project documentation and forums to determine whether its listed capabilities fit your setup.

OpenCore suits users looking for a bootloader with UEFI and BIOS support, multiboot, and boot-entry and boot-menu options. Its listed forums and kernel documentation may also be useful to people configuring systems or exploring kernel extensions.