Stagehand
Roscolux. GAM. Lee. Apollo.
Gels are viewable by their swatch book, or all together sorted by hue, letting you find the perfect color without worrying about the manufacturer.
Each gel carries its manufacturer information — transmission and description — alongside samples of its neighbors in the book, so a color never shows up without its context.
Search by color
Pick a color off the wheel and Stagehand returns the closest matches across every book it knows — not just the ones whose names you remember.
Search by anything else
Name, number, and description are all indexed. If you can half-remember it, you can find it.
Free, and staying free
Stagehand is a free reference for professionals and amateurs alike. Over 35,000 people have downloaded it, and it gets used hundreds of times a day.