OptiFine is an example, I installed it after Forge using MultiMC and whenever I pressed ESC the game crashed. I don't know if that is because the Forge is Beta or it's just not compatible. Another example is Too Many Items. I know they have a Forge version but, the 1.7.2 version is a Jar Mod. The download page only had a 1.6.4 Forge version.
optifine and forge usually work on getting rid of their own bugs before working on compatibility.
I did that I even tryed playing single player for a few minutes list still is blank is there a way to just install it manualy?
Make sure you're running 1.7.2, NOT 1.7.4, which doesn't have a forge yet. If you're absolutely sure that "Change Version" is set to 1.7.2, then its a bug. Its currently being reported here: https://github.com/MultiMC/MultiMC5/issues/40 Which you can support by posting there.