Sources
I have over 100 d20 books and pdfs so ask if there is something you want to use, I might have it. The answer will be either no, yes with changes, or yes. Since I am starting at 1st level I am more likely to allow weird classes or races and see how they progress.
Sources I have for further possible class options I will consider but have to review first if you want stuff from them, and I might alter stuff:
Sources:
WotC: Unearthed Arcana, Complete Warrior, Psionics SRD, Modern SRD, Dragonlance CS, FRCS, Wheel of Time, Diablo, Tome of Magic, Player's Handbook II, Complete Adventurer,* Complete Arcane,* Complete Divine,* Eberron Campaign Setting,* Races of Eberron,* Races of Destiny,* Races of Stone,* Races of the Wild* and excerpt articles posted on the WotC website presenting full descriptions of certain classes. (* are through crystalkeep.com)
Third-Party, several including:
0one Games: Heroes and Magic
93 Game studios: Basic Classes Apprentice
AEG: Mercenaries
Aegis Studios: Contagion Revised, Virulence,
Alea Publishing: A Question of Honor Knightly Orders, A Question of Loyalty Military Orders, Chronicles of Yrza Crow, Crusader Subclass, Honor and Corruption, Mindcraft, Poor Gamers Almanacs,
Ancient Awakenings Publications: Dryden Hero or Horror,
Atlas Games: Nyambe, Occult Lore,
Avalanche Press: Aztecs, Black Flags Pirates of the Caribbean, War in Heliopolis,
Bards and Sages: Gods of the Dead, Neiyar,
Bastion Press: Wildwood, Mysteries of Arena, Torn Asunder, Spells and Magic, Pale Designs,
Blue Devil Games: Helios Rising,
Chainmail Bikini: Beyond Monks 3.0,
Creative Mountain Gaming: Lexus Culture Class County Clergy, Lexus Culture Class Trundlefolk,
Cryptosnark Games: Deeds Not Words,
Crystalkeep.com: Classes
DaemonEye Publishing: Academe Mentus, Dead Stars,
Dark Quest Games: In the Saddle,
Dog Soul Publishing: Books of Faith Hinduism, Books of Faith Jainism, Fishers for the Dead, Gallia, Kitsunemori
Dream Scarred Press: High Psionics Soulknives, Races of the Mind Elan, Untapped Potential, Untapped Potential Complete Marksman,
Dunham Studios: Elemental Powers Player’s Sourcebook,
Emerald Press: Wilderness Master,
EN Publishing: Asgard Magazine 1-7, Crimson Contracts, Crystalmancy, Elements of Magic, Elements of Magic Revised, Elements of Magic Lyceian Academy, Elements of Magic Mythic Earth, Fantastic Science, Four Color to Fantasy, Four Color to Fantasy Revised, Heroes of Code, Monks of the 9 Animal Clans, Necromancer's Legacy Bloodlines and Paragons, Steam & Steel, Three Arrows for the King, War of the Burning Sky Player's Guide,
Fantasy Flight Games: Cityworks, Darkness & Dread, Midnight, Path of Faith, Path of Magic, Path of Shadows, Path of Swords, School of Evocation, School of Illusion, Sorcery & Steam, Traps and Treachery, Wildscape,
Fifth Element Games: Alignment Paragons, Eldritch Codex: Libram of Silver Magic,
Goodman Games: Complete Guide to Fey, Complete Guide to Rakshasa, Complete Guide to Treants, Morningstar, Underdark Adventure Guide,
Green Ronin: Avatar’s Handbook, Book of Fiends, Freeport Trilogy, Testament, Witch’s Handbook,
Heathen Oracle: Novice to Master,
High Moon Media: Paragons: Forest Dwellers, Paragons: Sun and Sea,
Inner Circle: Broken Isles Player's Guide,
LPJ: Races of NeoExodus: Cavian, Races of NeoExodus: Cynean, Races of NeoExodus: Dalrean, Races of NeoExodus: Enuka, Races of NeoExodus: Prymidian, Races of NeoExodus: Sasori,
Malhavok Press: Arcana Evolved, Arcana Unearthed, Book of Experimental Might, Book of Experimental Might II, Book of Hallowed Might, Complete Book of Eldritch Might, Iron Heroes, Iron Heroes Bestiary
Malladin's Gate: DarkLore Campaign Primer, Forgotten Heroes Paladins, Forgotten Heroes Sorcerers, Modern Heroes Martial Avengers, Saint John’s College of Abjuration, Unearthed Adventurers Volume 1,
Mystic Eye Games: Tarot Magic,
Mob United Media: OGL The Fighting Priest, OGL The Thief, OGL The Warbard, Steel and Stealth,
Mongoose Publishing: Conan RPG Pocket Guide, Infernum Player’s Guide,
Monkey God: From Stone to Steel, Frost and Fur,
Morrigan Press: Talislanta d20,
Octaviarate Games: Collectabeasts, Simple Tricks and Nonsense,
Otherworld Creations: Forbidden Kingdoms,
Paizo: Dragon 310, Dragon 317, Dragon 318, Dragon 319, Dragon 320, Dragon 326, Dragon 337, Dungeon 100, Pathfinder Alpha 1-3,
Red Dragon Tavern Games: Tome of the Lost Realms Campaign Setting,
Red Moon Games: Kyngdom Campaign Setting,
RollInitiative.com: Book of Versus Classes
Ronin Arts: Core Class Variants,
RPGObjects: Legends of the Samurai,
Sean K. Reynolds Games: New Argonauts,
Spellbinder Games: Dreadmire Bonus Material,
Sovereign Press: Age of Mortals,
Sword Sorcery Studios: Aberrant d20, Everquest RPG PH, Gamma World PH,
S.T. Cooley Games: Enchiridion of Elided Enduements of the Expanse,
Tangent Games: Ados Land of Strife,
Team Frog: Vampire Hunter$,
The Le: Neo Clerics Opus Priest, Neo Druids Savage Heart, Neo Fighters Fire Knight, Neo Paladins Martyr, Neo Rangers the Spider King, Pimp My Paladin, Unorthodox Barbarians, Unorthodox Bards, Unorthodox Clerics, Unorthodox Fighters, Unorthodox Monks, Unorthodox Paladins, Unorthodox Pirates, Unorthodox Ranged Combatants, Unorthodox Sorcerers, Unorthodox Witches, Vikings,
Throwing Dice Games: Character Customization,
Vigilance Press: Clash of Arms: Cavalry, Clash of History: Witch Trials, Clash of Kings: Guilds and Money, Clash of Kings: Nobility, Prometheus, Vigilance,
Zeitgeist Games: Blackmoor Campaign Setting
and maybe others.
I might consider some of these classes underpowered, such as many of the Avalanche Press historical ones, and therefore NPC ones.
Race Books: Mythic Races, Races of Evernor I-III, Umbragia Races, Emerging Forms Aegire, Races of the Underdark (the web enhancement for Goodman Games underdark monster book), 6 Races of NeoExodus, a bunch of Campaign settings (Oathbound, Wildwood, Arena, Mysteries of Arena,
www.athas.org for Dark Sun
www.planewalker.com for Planescape, Forgotten Realms CS, Dragonlance CS, Age of Mortals, Arcana Unearthed, Valus, Kyngdoms, Helios Rising, Burok Torn from scarred lands, Dragonlords of Melnibone, Twin Crowns CS, Nyambe, Ravenloft CS, Twilight of Atlantis, Ragnarok, Doom of Odin, Castlemourn Player's Guide, Ptolus, Argyle Lorebook, Midnight, Talislanta d20, Morningstar, Blackmoor CS, each have new races), a bunch of monster books (for example Advanced Bestiary, Blackdirge's Dungeon Denizens, Complete Minions, Creature Weekly, Creature Collection Revised, Complete Denizens of Avadnu, E.N. Critters, Fiend Folio, Lethal Lexicon, Little People, Manual of Monsters, Menagerie, Monster Manual II and IV, Monsternomicon I & II, Tome of Horrors Revised, the srd, and others) and a few miscellaneous sources (Rats in the Walls, Children of the Fey, Children of the Serpent, Complete Guide to Treants, Mercenaries, Race Creation Cookbook, Races: Animal Kingdoms, Apes of Nature Myth and fantasy, Mars RPG, Dreamscapes, the "Into the" series, Out for Blood, Faeries, Hidden Races, Honor and Corruption, Mystic Warriors, others).
Major spell sources: SRD/PH, Spell Compendium, Tome and Blood, Magic of Faerun, Arcane Strife, Book of Curses, Complete Book of Eldritch Might, Crystalmancy, Dweomercraft Enchanters, Encyclopedia Arcane Necromancy, Joe's Book of Enchantment, Minor Magicks, Paths of Power, Practical Enchanter, Quintessential Wizard, Relics and Rituals, Relics and Rituals II, School of Evocation, School of Illusion, Simple Tricks and Nonsense, Spells and Magic, Spells and Spellcraft, Urban Magica Spell Cards, and other ones that have fewer spells.
Major combat feat sources: SRD, Sword and Fist, Complete Warrior, Player's Handbook II, Torn Asunder, Arcana Unearthed, Iron Heroes, Book of Iron Might, Beyond Monks, Deeds Not Words, Deeds Not Words Smack Down, Masters of Arms, Martial Arts Mayhem Vol. 1, Legends of the Samurai, Action Maneuvers, Critical Feats, Rage Feats, Sunder Feats,
http://realmshelps.dandello.net/datafind/feats.shtml others.
Psionics (Standard 3.5) Sources: 3.5 srd, Hyperconsciousness, Untapped Potential, Divine Mind, Races of the Mind Elan, High Psionics soulknives, High Psionics Psionic Feats, Gestalt Surge Feats,
Alternate Magic System Sources: Psionics 3.5 (srd), Tome of Magic, Forgotten Realms CS, Wheel of Time, Occult Lore, Everquest RPG 1e, Arcana Unearthed, Iron Heroes, Complete Book of Eldritch Might, Elements of Magic, Elements of Magic Revised, Elements of Magic Mythic Earth, Legends of the Samurai, Twin Crowns CS, Spellbound, Relics and Rituals, Talislanta d20, Four Color to Fantasy, Mindcraft, Psihammer, Academe Mentus, Mystic Warriors, Deeds Not Words, Vigilance, Others.
Ritual Magic sources: Relics and Rituals, Twin Crowns CS, Spellbound, Heroes of High Favor Elves
Pirates: Unorthodox Pirates, Black Flags Pirates of the Caribbean, Twin Crowns Campaign Setting, Broadsides!, Pirates!
Ones of note from WotC that I do not have and so will not allow material from: Anything Eberron (though note the dragon magazines with preview elements), Anything Kalamar, Complete Arcane, Complete Divine, Complete Adventurer, Complete Champion, Complete Scoundrel, Complete Mage, Complete Psion, Magic of Incarnum, Any Races of series, Most Handbook books, Any Heroes of series, Oriental Adventures, Savage Species, Book of Exalted Deeds, Book of Vile Darkness, Book of Nine Swords. Note that I do have crystal keep downloads and Spell Compendium though.