This list is how I discovered xsunclock. which quickly became my poster child for everything I love about computing. It is very clearly a labor of love. It follows no ui guideline known to man(I like to refer to these sort of programs as following the R'llyeh school of design). It is just barely on this side of usable but offers an unmatched set of timekeeping options. It is pretty great.
The program xsunclock uses the look and feel of the Open Look toolkit, which is a programming toolkit from Sun that pre-dates Motif and others, but it definitely looks quite different from other GUI toolkits.
