DayGlow (company)

 Only mentioned in the The Armageddon Rag, DayGlow is a weapons manufacturer possibly specializing in chemical weapons.

Background
The company was mentioned in reference to the "Chemblaster™ 3000™ CDS," a chemical weapon said to utilize "DayGlow technology for high-speed/high-accuracy dispensing". As evidenced by the company's name, it is most likely located in Dayglow. 

Appearances
DayGlow is mentioned in The Armageddon Rag, Vol. 4 under Crazy Ivan's New and Used Guns.

The DayGlow Company was likely to appear in Fallout Online, Interplay's orignal Project V13, since abandoned in favour of an unrelated project by the same name.