GNU Parted is a program I
co-founded with Lennert Buytenhek (and with large contributions later from
Matthew Wilson and Guillaume Knispel).
As far as I know, it is still used in the installation programs of most GNU/Linux
varieties such as Ubuntu and Fedora.
I began work on this in 1998 when I wrote a program for resizing Microsoft's
Lennert Buytenhek had written a program for resizing Linux's ext2 filesystem,
so we combined our work into GNU Parted.
Matthew Wilson submitted many bug fixes and minor contributions that was a great
help in making Parted work reliably on a very diverse range of computers.
Guillaume Knispel wrote the code for resizing Apple's HFS filesystem.
Conectiva (which merged with Mandriva before going bankrupt in 2015) employed me
-- until the tech bubble burst in 2001 -- to work on GNU Parted.
I maintained the project until 2005, but I am no longer involved.