GuiAPI – An Advanced GUI Toolkit for Minecraft 1.5.2/1.5.1/1.4.7

For Users:

GuiAPI is a coremod, and thus requires Minecraft Forge.

Installation:

1. Download the GUI API
2. Drag all the contents from the extracted file into the minecraft.jar
3. Delete META INF

For 1.5.2

http://www.dl5.9minecraft.net/index.php?act=dl&id=1368346598

http://www.dl2.9minecraft.net/index.php?act=dl&id=1368345850

http://www.dl4.9minecraft.net/index.php?act=dl&id=1368321038

For 1.5.1

http://www.dl.9minecraft.net/index.php?act=dl&id=1364036702

http://www.dl2.9minecraft.net/index.php?act=dl&id=1364036423

http://www.dl3.9minecraft.net/index.php?act=dl&id=1364011561

For 1.4.7/1.4.6

http://www.dl3.9minecraft.net/index.php?act=dl&id=1356815952

http://www.dl2.9minecraft.net/index.php?act=dl&id=1356815711

For 1.4.5

http://www.dl.9minecraft.net/index.php?act=dl&id=1353596906

Credits: ShaRose

Source: GuiAPI – An Advanced GUI Toolkit for Minecraft 1.5.2/1.5.1/1.4.7