Ehhh..... I have a set of martial arts feats for D&D that I made for similar purposes. Made for a low-magic campaign though, so might warrant cutting out one or two of the feats for a quicker advancement in balance/leaping/soaring ability.
Also, a few years ago Dragon Magazine's issue related to Oriental Adventures had a feat that grants flying ability, for use in Wuxia-style games; I think I remember it needing at least 9 character levels or something. That's the only other thing I know of that would work (given my limited familiarity with the myriad 3rd-party products).
Leap Of Grasshopper (General, Martial Art)
You can jump incredibly high and rapidly.
Prerequisites: BAB +1 or higher, Strength or Dexterity 13+, Jump 5+ ranks.
Benefits: Your maximum jumping distance and height are doubled. You can make a Jump check as a free action once per round as though it were a 5-foot step, provoking no attacks of opportunity through the movement of that jump, though not necessarily limited to only a 5-foot leap. Even when leaping from a standing position, you count as though you had moved 20 feet before the jump. You get +4 on Jump checks to reduce damage from falling as part of a jump. Leap Of Grasshopper counts as an extraordinary ability.
Ki Leap (General, Martial Art)
You can enhance your leaps and bounds by manipulating your ki.
Prerequisites: BAB +3 or higher, Strength or Dexterity 13+, Wisdom or Charisma 13+, Leap Of Grasshopper, Jump 8+ ranks.
Benefits: You add your Wisdom modifier, if positive, and your Charisma modifier, if positive, combined as an enhancement bonus on all Jump checks. You also have no maximum jumping height or distance based on your size or height. Lastly, once per hour you may take 10 or take 20 on a Jump check regardless of distractions or dangers, and without the extra time usually needed for such an action, as you use a brief surge of ki to propel you on a sure course through the air. This last benefit may not be used when making a Jump check as a free action with Leap Of Grasshopper or Bound Of The Hare. Ki Leap counts as an extraordinary ability.
Tread Like Spider (General, Martial Art)
You have an exemplary natural equilibrium, honed through martial arts and ki training.
Prerequisites: BAB +5 or higher, Strength or Dexterity 13+, Wisdom or Charisma 15+, Leap Of Grasshopper, Ki Leap, Balance 5+ ranks, Jump 8+ ranks.
Benefits: You can use your ki to lighten yourself such that you can tread on water, thin tree branches, rooftops, and so on without falling through, damaging the item with your weight, slipping, or losing your balance. Most of these benefits are automatic, though in the case of retaining your balance in such situations, you simply gain a +10 bonus on your Balance checks. If you lose your balance while standing or treading on water, you topple over into the water. You can also use this to fall more slowly and land lightly, thus ignoring one die of falling damage per two character levels you possess, due to your light landing. It takes no active effort for you to utilize this ability, as it simply activates by instinct or reflex whenever it would apply, so long as you are conscious. Tread Like Spider counts as an extraordinary ability.
Floating Crane Glide (General, Martial Art)
You are so skilled at channeling your ki for great leaps that you seem almost to float like a graceful crane in flight.
Prerequisites: BAB +7 or higher, Strength or Dexterity 13+, Wisdom or Charisma 17+, Leap Of Grasshopper, Ki Leap, Balance 8+ ranks, Jump 10+ ranks.
Benefits: You may fight and perform other actions while you jump, and on any given round you may choose to spend a full round gliding through the air with a series of leaps and bounds, during which your feet hardly even alight upon the ground with each leap before you float back into the air again; you may not perform any free jump actions when doing so, as you already spend the entire round jumping. However, when doing so, you can jump from a standing position and yet treat the jump as though you had been running at your full speed the entire round before leaping, as you use ki to propel you onward even from a stationary position. Also, while jumping in this manner, you can perform any actions normally even through you are airborne and would not ordinarily be capable of acting during a jump; you can even perform 5-foot steps by redirecting your ki to shift position in mid-leap. The only actions you cannot perform then are free jump actions and move actions (although move-equivalent actions are allowed), as you are already counted as moving through the air the entire round as you act. Lastly, you gain a +2 bonus on all Jump skill checks merely from having this feat. Floating Crane Glide counts as an extraordinary ability.
Bound Of The Hare (General, Martial Art)
Your speed and expertise at rapid leaps makes you a formidable foe, swiftly hopping to and fro to evade and confuse.
Prerequisites: BAB +9 or higher, Strength or Dexterity 15+, Wisdom or Charisma 17+, Leap Of Grasshopper, Ki Leap, Tread Like Spider, Floating Crane Glide, Balance 10+ ranks, Jump 10+ ranks.
Benefits: You are capable of making rapid hopping jumps or mighty leaps that span great heights and distances. You may jump as a free action twice per round, in addition to the free jumping action you can take each round from the Leap Of Grasshopper feat. In addition, you double your result when performing a Jump check as a free action, for this feat and for Leap Of Grasshopper. Lastly, your nimbleness in combat grants you a +1 dodge bonus to AC, which stacks with other dodge bonuses as usual. Bound Of The Hare counts as an extraordinary ability.
Soar Like A Sparrow (General, Martial Art)
You can manipulate and project your ki to manipulate air currents and propel yourself through the air on a personal buffet of wind, simultaneously using ki to lighten yourself and float upon the personal breeze you generate.
Prerequisites: BAB +9 or higher, Dexterity 15+, Wisdom or Charisma 17+, Leap Of Grasshopper, Ki Leap, Tread Like Spider, Floating Crane Glide, Balance 8+ ranks, Jump 12+ ranks.
Benefits: When using the gliding ability of Floating Crane Glide, you may choose to instead Fly at your land Speed + 20, with Poor maneuverability, and when doing so you are treated as though you possessed the Fly-By Attack and Hover feats from the Monster Manual, although since you fly with such ease and grace, you may perform even full-round actions as you glide about. Lastly, you may now take 10 on a Jump check as per the Ki Leap feat even when jumping as a free action with Bound Of The Hair or Leap Of Grasshopper, but you cannot take 20 in this manner for such a check. Soar Like A Sparrow counts as a supernatural ability.
Wind Dance (General, Martial Art)
Your graceful, floating movements form a deadly aerial dance.
Prerequisites: BAB +9 or higher, Dexterity 17+, Wisdom or Charisma 17+, Leap Of Grasshopper, Ki Leap, Tread Like Spider, Floating Crane Glide, Soar Like A Sparrow, Balance 10+ ranks, Jump 10+ ranks.
Benefits: When jumping, or gliding with Floating Crane Glide, or flying with Soar Like A Sparrow, you gain an additional +1 dodge bonus to AC for the round and can strike opponents as though they were caught flat-footed, usually denying them their Dexterity bonus to AC and similar AC modifiers unless they possess an ability such as the Rogue's Uncanny Dodge. The dodge bonus to AC granted by this feat is not cumulative with itself, so jumping multiple times in any given round does not grant additional dodge bonuses. However, this dodge bonus stacks normally with other dodge bonuses to AC. Additionally, you may use the Tumble skill while airborne via jumping, gliding with Floating Crane Glide, or flying with Soar Like A Sparrow, allowing you to perform aerial acrobatics to boost your AC or for other purposes. Wind Dance counts as an extraordinary ability.
Aerial Swoop (General, Martial Art)
You can make a powerful diving attack from mid-air, using your superior jumping skills and ki manipulation.
Prerequisites: BAB +11 or higher, Dexterity 17+, Wisdom or Charisma 17+, Leap Of Grasshopper, Ki Leap, Tread Like Spider, Floating Crane Glide, Soar Like A Sparrow, Wind Dance, Balance 12+ ranks, Jump 12+ ranks.
Benefits: While you are in mid-air during a jump, or while gliding with Floating Crane Glide, or while flying with Soar Like A Sparrow, you can choose to end your leap or flight and drop downwards suddenly in an aerial dive to strike an enemy directly below you or within 5 feet horizontally of your position (your height does not matter for this purpose). Performing the Aerial Swoop ends your turn, and immediately after performing the Aerial Swoop you land on your feet at any spot of your choice within 5 feet from the targeted foe. Treat the Aerial Swoop as a melee attack for purposes of attack and damage bonuses. When performing an Aerial Swoop, you make a single attack with a circumstance bonus of +4, and if your attack is successful, you inflict an additional 1d6 damage for every 10 feet you dropped vertically from the air before striking the foe. However, you yourself suffer falling damage of 1d6 per 30 feet dropped, rounded up, which cannot be reduced by Tread Like Spider or Safe Fall. Foes receive no attacks of opportunity against you when performing an Aerial Swoop, but after initiating the Aerial Swoop you suffer a -4 penalty to Armor Class until the beginning of your next turn, due to brief disorientation and the impact. As a note, the benefits of the Wind Dance and Bound Of The Hare feats still apply when using the Aerial Swoop, so their dodge bonuses to AC may counteract or lessen the AC penalty of this ability in many situations, and the other benefits of Wind Dance may make an Aerial Swoop attack more likely to succeed. Aerial Swoop counts as an extraordinary ability.
Blowing Wind Cascade (General, Martial Art)
You can strike like a cyclone with furious, rapid attacks from mid-air, utilizing not only your fists but your legs as well for simultaneous punches and kicks in quick succession.
Prerequisites: BAB +11 or higher, Strength 15+, Dexterity 19+, Wisdom or Charisma 17+, Leap Of Grasshopper, Ki Leap, Tread Like Spider, Floating Crane Glide, Soar Like A Sparrow, Wind Dance, Aerial Swoop, Balance 15+ ranks, Jump 12+ ranks.
Benefits: While in mid-air during a jump, or during the gliding of Floating Crane Glide or the flight of Soar Like A Sparrow, you can rain down a flurry of strikes upon an opponent within melee range, and yet continue your jump, glide, or flight regardless of the brief aerial barrage you unleash. This works similar to the Spring Attack or Fly-By Attack feats, except that you may perform a full-attack action during your movement, and you aren't limited to just moving your speed, but instead just complete the distance of your jump, glide, or flight after unleashing your cascade of blows. While you use Blowing Wind Cascade, you gain an additional two attacks from your full-attack action, each at your highest attack bonus, but all of your attacks during the Blowing Wind Cascade suffer a -4 attack penalty (this overrides the character's Flurry Of Blows ability, if any, as well as any similar abilities). However, because of your momentum and the power you put behind your blows, each of your attacks deals +1 damage if successful (not multiplied on a critical hit, but effective even against foes immune to critical hits). Blowing Wind Cascade counts as a supernatural ability.
Martial Arts Mastery:
Wind Striding Art Mastery
You have mastered the aerial nuances of the graceful Wind Striding Art.
Prerequisites: Leap Of Grasshopper, Ki Leap, Tread Like Spider, Floating Crane Glide, Bound Of The Hare, Soar Like A Sparrow, Wind Dance, Aerial Swoop, Blowing Wind Cascade, Balance 15+ ranks, Jump 15+ ranks, Tumble 5+ ranks.
Benefits: While jumping, gliding with Floating Crane Glide, or flying with Soar Like A Sparrow, you gain a +1 bonus on all melee attack rolls (including the attack roll for Aerial Swoop), and an additional +1 dodge bonus to AC. You also never provoke an attack of opportunity when jumping, gliding, or flying within, through, out of, or into a threatened area.