Overloaded by CJ Miller (cjm721)
Adds various complicated and tedius things that will minimize your need to destroy your server with your chunk sized arrays of machines.
Overpowered Inventory by Lothrazar
Expands your inventory space to 15 rows by 25 columns = 375 total slots. Also adds four special slots to hold ender pearls, ender chest, clock, and compass. A keybinding is added to use the ender pearl from this slot (regardless of what is in your hotbar). You can store experience by filling Bottles o Enchanting by putting empty bottles in a special slot in the far right. The two buttons on the top right deposit your items into nearby chests automatically. Also includes a 3x3 crafting grid instead of 2x2. Some bits of code are forked from the open source repository at https://github.com/Funwayguy/InfiniteInvo (Which is a completely different 1.7 mod not by me).
Overreacted's Horse Breeding Fix by Overreactedosbol
A simple mod that makes breeding horses more efficient by adding an extra 5 - 10% bonus to each attribute of the newborn horse.
Overworld Quartz by WildBamaBoy, SheWolfDeadly, Ashleyosity
Gather quartz from the overworld! Who needs the Nether? Not you!