Abstract: Genome browsers are software tools for visualizing DNA sequence in the context of its annotation. Genome browsers are critical tools for assisting the analytical task of manually integrating annotations from various algorithms, none of which are 100% trusted. All genome browsers use some combination of stacking and banding annotations around a sequence. The spreadsheet is a vehicle for presenting stacked and banded annotation. Gadget is a new genome browser that uses a spreadsheet-like interface to organize annotation. Gadget's layout is useful and simple to implement using pre-existing software libraries.