Here you will find all of the house rules and varient rules for D&D 4.0 that I have created or have been witness to their creation. All files present here are with the creators permission and contain links to the original creation grounds if they are not my own work.
Two-Weapon Fighting - On the DnD4 forum one of the other users there (fozzyuw) came up with a slick feat selection that makes two-weapon fighting available to all classes without having to multiclass ranger.
Mounts and Mounted Combat - An additional set of feats, a paragon path and items to enhance the core mounted combat rules and options.
Vitality, Wounds and Injures - An aternative system for hit points that makes survival more demanding on creatures. Includes rules for a serious injury (breaks and amputations) as well as a new condition, bleeding.