Burg is an open source OS and utility bootloader. It is based on GRUB 2 and is used to boot various operating systems, including Linux, NetBSD, FreeBSD, OpenSolaris, and Windows. Burg is easy to use and configure, and supports a variety of themes, fonts, and resolutions. It also supports a wide range of boot options, including encrypted boot, secure boot, and booting from various media sources. Burg provides an intuitive graphical user interface that allows users to quickly and easily configure their bootloader. It also allows users to customize the look and feel of their bootloader with themes and background images. Finally, Burg provides users with a powerful command line interface for advanced users who wish to further customize their bootloader.
REFI discontinued. It has no longer been maintained since 2013. The author suggested visiting http://alternativeapp.info/software/refind/, a fork of the original program.