The Glass Guru was founded in 2004 in Roseville, California and began franchising in 2007. The company pioneered the technique of removing moisture from failing dual-pane windows, saving customers money on window replacement and seals. There are now over 30 locations in 13 US states, and Glass Guru remains the only company offering this service.

Tim McCullen founded Window Gang in 1986 in Wrightsville Beach, North Carolina as a summer job. As the company gained clients, McCullen decided to franchise beginning in 1996. Window Gang has locations along the East Coast from Virginia to Georgia. The private company is based in Morrisville, North Carolina. Canada franchises are welcome.