Here's a categorization of the disciplines. It still has an "other" category but it isn't huge. Thanks to everyone who filled in bits of the spreadsheet.
With this to look at, I start to wonder if a few disciplines should be merged. I should probably look at them more carefully before actually proposing it.
Mental State, Alignment or Aligned Plane
Name Author Concept Skill Weapons Who Qualifies Silver Crane ErrantX Good Spot longsword, longspear, scimitar, light pick, halberd, and two bladed sword anyone, with help of a good outsider Far Realm Jack Mann Madness, distortion of time and space Knowledge (the planes) armor spikes, blade boot, dire flail, flail, heavy flail, spiked chain, spiked gauntlet, spiked shield, and tentacle. Ninefold Damnation PairO' Dice Nine Hells Intimidate glaive, whip, spiked chain, and claw Infinite Torment PairO' Dice Abyss Intimidate longsword, whip, spiked chain, and claw Dread Crown Demented One Mixed Fiends Intimidate bastard sword, battleaxe, claw, falchion, greatsword, and scythe evil crusaders and warblades Golden Saint Demented One Non-Lethal, anti-Evil Diplomacy dagger, longspear, longsword, sap, short sword, and unarmed strike good crusaders and swordsages Falling Anvil DracoDei Slapstick Comedy Bluff All improvised weapons*, bundle of dynamite, club, cannon (American Civil War era), catapult, cosh (one-handed version of the sap), great club, Maul (AKA Giant Mallet), spherical bomb, stick of dynamite, trebuchet (maybe?), sap, , and unarmed Strike Non-Lawful Only, Must be capable of great silliness on the field of battle. See second sheet for which base classes DracoDei thinks could fit. Quicksilver Aegis Krimm Law/Mechanus Balance greatmace, greatsword, heavy mace, longsword, and maul Crusaders, Soul Disciples, and Swordsages of a lawful alignment black heron errantx demonic possession, maximized damage Intimidate bastard sword, glaive, greataxe, greatsword, heavy mace, and warhammer requirement: being possessed by a demonic force Kaleidoscopic Dream Demented One Limbo/Chaos Tumble blade knuckles, falchion, gutter-sword, halberd, and scimitar Crusaders, Soul Disciples, and Swordsages who appreciate chaos
Outside Power Source
Name Author Concept Skill Weapons Who Qualifies Bladed Thoughts Yue Ryong Psionics, boosting physical attacks Autohypnosis Soul Weapons The Heart Shaper Mental Grip DaTedinator Psionics, especially telekinesis autohypnosis Unarmed Strike, Dagger, Light Hammer, Sai, Handaxe, Scimitar. psionic swordsages Sleeping Goddess The demented one Strike at Mind, not Body. Psionics Autohypnosis bastard sword, quarterstaff, short sword, shortspear, and unarmed strike. Plus any created by one of its maneuvers. Swordsages with a psionic power reserve Narrow Bridge JoshuaZ Necromancy, balance between life and death Knowledge (Religion) bastard sword, battleaxe, greataxe, scythe, unarmed strike, and whip. The Discipline of the Lost Lyrics Kellus Bardic Perform (oratory) or Perform (sing) rapier, longsword, longspear, and short sword Solaris Arcanum Golden Esque Blend of sword and spells. Spellcraft dagger, longsword, the rapier, and the shortsword, Can only learn if the character has access to at least some magical knowledge. For example, character can be a multiclass Sorcerer or have spell-like abilities. Untamed Essence Vox Clamantis Enhance weapon with Ki, Defend against magic, travel magically Spellcraft ((Needs to be defined)) Casting NOT required, but popular among spellswords and Jade Phoenix Mages Witch Razor pyrefiend Blend of warlock techniques and swordplay Spellcraft shortsword, dagger, rapier, butterfly sword and sai swordsages Holy Word Discipline Fax Celestis Truespeak librum, warbell, heavy warbell, quarterstaff, and heavy shield Crusader
Energy Damage
Name Author Concept Skill Weapons Who Qualifies Frozen Zephyr / Acidic Fog / Shocking Sky Krimm Blackleaf Balance/Escape Artist/Intimidate Same as Desert Wind? Any with access to Desert Wind Glacial Chill I_got_this_name cold, slow, debuffs, endurance Survival greataxe, battle axe, light and heavy pick, and warhammer Swordsages and Warblades. Placid Lake Yue Ryong slow movement, cold, debuffs Move Silently Unarmed Strike, Natural Weapons, Scimitars, Sickles, Scythes Swordsages Rending Scream I_got_this_name sonic damage and mental effects Intimidate claw, greataxe, maul unarmed Strike, shield bash, and slam Warblades
Specific Weapon(s)
Name Author Concept Skill Weapons Who Qualifies Steel Mountain Nero24200 Active Shield Use balance Heavy Shields, Small Shields, Shield Spikes crusaders and warblades Chthonic Serpent DragoonWraith Flexing Weapons, Constriction Use Rope Dire Flail, Flail, Flindbar(MM3), Heavy Flail, Kusari-Gama(DMG), Spiked Chain, Tentacle, and Whip Swordsages and Warblades Fool's Grip Demented One Improvised Weapons Tumble All Improvised Infiltrators and Non-organized? Mystic Cobra Shyftir Pole-arms Balance naginata (glaive), guisarme, halberd, ransuer, spear and long-spear Sohei Adepts, Leap Dragoons, probably warblades, ??? Monkey Paw playswithfire Grappling Escape Artist unarmed strike, claw, scorpion claws, mancatcher and grapple swordsages Piercing Point Frog Dragon Spears Balance Spear, Longspear, Halberd, Ranseur, Guisarme, Glaive. Warblades
Ranged
Name Author Concept Skill Weapons Who Qualifies Iron Rain dspeyer (compiler) Rapid Archery Spot Bows, Throwing Knives, Javelins Crusaders and Warblades Falcon's Eye dspeyer (compiler) Precision Archery Search Bows, Crossbows, Rays Swordsages and Warblades Nightingale Feather dspeyer (compiler) Mystic Archery Spot Bows, Slings, Shurukin Swordsages Black Rain Demented One Firearms Spot firearms, as well as the concussion blaster, death ray, firewand and wandgun Falling Star Fax Deprecated archery Spot longbow, composite longbow, shortbow, composite shortbow, greatbow, and composite greatbow True Arrow I_got_this_name Deprecated archery Spot light and heavy crossbow, longbow, shortbow, and javelin
Acquatic
Name Author Concept Skill Weapons Who Qualifies Falling Wave I_got_this_name Aquatic Combat Swim bite, claw, dagger, net, and trident swordsages Ocean Tempest PairO' Dice Move like a Wave Swim khopesh, the trident, the whip, the spiked chain, and the flail Swordsages Ocean Soul Fax Celestis Swim harpoon, net, trident, and punching dagger Swordsages
Speed
Name Author Concept Skill Weapons Who Qualifies Oncoming Storm The demented one blinding speed and masterful misdirection Sleight of Hand dagger, handaxe, light pick, rapier, sai, and shortsword Swordsages and Warblades Leaping Gale I_got_this_name speed and air Jump whip, spiked chain, longsword, longspear, spear, and shortspear Swordsages Gentle Breeze Closet Skeleton speed, air listen Katana, Scimitar, War-fan and unarmed strike Swordsages and Warblades
Mounted
Name Author Concept Skill Weapons Who Qualifies Silver Pegasus I_got_this_name mounted Ride lance, longsword, heavy mace, and bastard sword Warblades and Crusaders Twin Spirit demented one Mounted Combat Ride lance, longsword, and scimitar Crusaders and Swordsages
Poison
Name Author Concept Skill Weapons Who Qualifies Viper Fang I_got_this_name poison and precision Heal dagger, punching dagger, short sword, and rapier swordsages Black Lotus Zakaroth stealth, poison, trickery Sleight of Hand dagger (any type), ninja-to and short sword Sublime Assassin
Very Supernatural
Name Author Concept Skill Weapons Who Qualifies Coin's Edge Demented One Luck Profession (Gambler) dagger, falchion, longsword, rapier, scimitar, and two-bladed sword swordsage Masked Moon I_got_this_name shapeshifting Disguise natural weapons, unarmed strike, punching dagger, spiked gauntlet, armor spikes, sickle, and handaxe Swordsages and Warblades
Other
Name Author Concept Skill Weapons Who Qualifies Army of One The demented one fight against vastly greater numbers Intimidate battleaxe, dueling shield, glaive, greatsword, longsword, and spear Crusaders and Warblades Blood Sage pyrefiend precision damage and healing heal dagger, sickle, war-scalpel, kama swordsages and warblade Broken Blade JoshuaZ Beat other martial adepts Martial Lore Scimitar, Falchion, Rapier, Bastard Sword, Longsword, Short Sword, Unarmed Strike, Greatsword, Dagger. Additionally, if you know a maneuver from any discipline you may treat any weapon from that discipline that you are proficient in as being associated to the Broken Blade. Crusader, Swordsage, Warblade, Masters of Nine, True Masters of Nine, ??? Dancing Leaf The demented one Counters and Defense Escape Artist longspear, longsword, quarterstaff, scythe, and whip. Swordsages and Warblades Knowing Heart DSpeyer Nonlethal Techniques heal sap, net, bolas, quarterstaff swordsages (alternate rule: anyone with setting sun and shadow hand) Scarlet Bravura Demented One Selfless Leadership Perform (Oratory) bastard sword, greatsword, lance, rapier, and spiked shield Crusaders and Warblades who are Leaders Scarlet Rose Nero24200 Graceful Two-Weapon Fighting Perform (Dance) Dagger, Longsword, Quarterstaff, Rapier, Shortsword Swordsages and Warblades Way of the Gear Imp_Fireball Gears of War Concentration ((Not defined)) Warblade and Crusader
Edit: moved Way of the Gear
Edit: added Bladed Thoughts and Monkey Paw
Edit: replaced igotthisname links with reposts