Version Checker is a small mod that will show updates for mods in an easy list. Mods currently add version checkers which will spit out a bunch of text to the chatbox at startup of a game, which gets cluttered very quickly. This mod will add a small button at the main menu when it detects an outdated mod. The number represents the number of found outdated mods.
Download link: Version Checker Mod 1.8.8/1.7.10