NeonLite 1.0 estimates the size of transformer(s) for combinations of many types of neon tubes. Freeware.
Neon-X 1.0 (105k)
Krypton Neon's Free Neon Chart. Runs as a DOS and WIN executable file.
Neon-J 1.0 (132k)
Krypton Neon's Free Neon Chart. In JPG format.
Kenny's Color Mixer Version 1.1 (11k)
Kenny's Color Mixer Version 1.1 (clrmix11.zip), while not Neon specific, assists enhanced html authoring by providing a convenient on screen mixer for background and text coloring. Improvements in Version 1.1 are recognition of 8 bit dithering and 24 bit color manipulation, and the helpfile has been expanded a bit. Shareware (requires vbrun300.dll).
VBRUN300.DLL is almost certainly already in your Windows/System File. If you do not have this file, here is a copy for you to download. Vbrun300.zip