Classes

Aegis - A psionic tank that builds their abilities around infusing their armor with power.
Alchemist - A bomb toting, potion brewing madman.
Ardent - From Complete Psionic. A sort of psionic version of a cleric, a full manifester with 3/4 BAB and heavy armor, but can only choose powers from a limited selection of mantles.
Armiger - A martial class adept at switching weapons and switching roles.
Armorist - A sphere caster focused around summoning weapons and armor.
Astrologian - A support oriented spellcaster that buffs and heals allies.
Bard - Charismatic casters, blending song and magic.
Beguiler - From PHB2. Spontaneous full casters who specialize in enchantment and illusion spells.
Binder - From Tome of Magic. They make pacts with various spirits to gain the use of supernatural powers.
Blacksmith - A martial class that crafts easily and provides a variety of buffs.
Bloodrager - A barbarian/sorcerer hybrid class.
Chronoshifter - A time mage, that utilizes their own casting system to manipulate the flow of time to provide a host of support, debuff, and battlefield control effects.
Chorister - A sort of divine bard, with more support but weaker casting.
Cleric (FFd20) - A holy spellcaster that gains a spell list based on the deity they worship.
Commander - A martial class that excels at commanding their allies.
Conscript - A martial class that is stronger at using the spheres than any other.
Crusader - From Tome of Battle. The martial adept version of Paladins.
Cryptic - Combines rogue aspects, psionic powers, and an eldritch blast style ability to do very well both in and out of combat.
Cultist - A mystery caster that draws their power from divinity.
Daevic - A veilweaving class that uses a passionate bond with an outsider to gain power.
Dark Knight - An unholy melee class that channels dark energy.
Destined Hero - A martial class that gains a pool of actions points in every encounter.
Dragoon - A martial spherecaster with a dragon companion.
Dread - A psionic class specialzed in fear and disabling enemies.
Dread Necromancer - Heroes of Horror. Spontaneous full casters specializing in necromancy.
Duskblade - PHB2. Melee spellcasters with the ability to channel spells through their weapon.
Earth Dreamer - An earth themed arcane caster.
Eclipse - A shadowy rogue type veilweaver.
Elementalist - A sphere caster focused around elemental damage.
Eliciter - A sphere caster focused around mind magic.
Emberhaunt - A fire themed arcane caster.
Eventide Magus - A dedicated caster that uses mysteries and arcane spells, but pays a price.
Factotum - Dungeonscape. Jack of all trades class, super versatile in being able to do almost anything, and masters of skills
Fencer - A dexterous combatant that uses their skill with one weapon to deal incredible precision damage and avoid attacks.
Fey Adept - A sphere caster focused around illusions.
Fighter (FFd20) - A martial powerhouse that specializes in specific weapons and hitting very hard.
Geomancer - A spellcaster that uses terrain based magic.
Guru - A monk-like veilweaving class that excels at nonlethal damage.
Harbinger - A martial initiator infused with darkness and sorrow.
Hedgewitch - A sphere caster that can assume a variety of roles in combat or utility.
Highlord - A psionic leader class that uses forces people into a collective.
Hollow - A martial oriented mystery user, who transfers their suffering to others.
Holy Knight - A melee class that channels holy energy.
Hunter - A druid/ranger hybrid class with a pet theme.
Incanter - A versatile sphere caster that can assume any role.
Indigo Trickster - A rogue style class designed around dual wielding, seamlessly integrates their class features with a mix of melee and magical combat.
Inquisitor - A divine rogue, or maybe a paladin crossed with an assassin, the Inquisitor is a strong melee or ranged combatant, with tons of self buffing spells and neat class features.
Investigator - An alchemist/rogue hybrid class focused on skills.
Invoker - Invocation class focused on having a strong set of spells that they can use at will for offense and battlefield control.
Kineticist - Channels the elements to blast their enemies and empower themselves.
Knight-Paladin - A combination of the Knight and Paladin classes, a tank style character that is incredibly hard to kill.
Limit Dragoon - A polearm toting class that functions as a damage dealer and effective tank, they become stronger the more damage they take, unleashing powerful abilities and leaping about the battlefield.
Mageknight - A melee focused sphere caster with powerful defenses.
Magician - An arcane spellcaster specialized in the creation and use of magic items.
Magus - A blend of melee and magic, casts various spells while attacking.
Malefactor - Offensive rogue type character, that has potent curses and auras designed to greatly weaken their foes.
Marksman - A psionic expert at ranged combat and enhancing their abilities with powers.
Medic - A martial initiator that can effectively heal their allies.
Medium - A versatile class that channels spirits to gain various abilities.
Mesmerist - A master of mental manipulation who weakens their enemies and strengthens their allies.
Monk (FFd20) - A martial artist that builds chains of combos to unleash devastating finishers.
Monk (Unchained) - Martial artists, masters of mobility and ki powers.
Mountebank - A stealth and illusion focused martial spherecaster.
Mystic - A wise martial initiator that manipulates elemental energy.
Necros - An undead creation focused spherecaster.
Nexus - A veilweaver attuned to the outer planes, specialized in blasting.
Ninja (FFd20) - An acrobatic sneak that combines many systems such as their own special form of magic, ki powers, and martial talents.
Occultist - A spellcaster who uses various implements to gain new powers.
Pactmaker - Makes pacts with spirits to gain supernatural powers.
Priest - A rework of the cleric, this limits their spell list to an alignment based approach in addition to domains, but offers much stronger domain features and unlimited use of divine and devotion feats.
Prodigy - A martial/spellcaster hybrid that can do just about anything.
Psychic Rogue - A rogue with psionic powers on top.
Psychic Warrior - Combines the versatility of fighter feats with the power of psionics to rule the melee space.
Radiant - A support oriented veilweaver that invests essence in their allies to empower them.
Rajah - A veilweaver and martial adept that focuses on supporting their allies.
Reaper - A martial spherecaster focused on hunting and embodying the traits of monsters.
Rogue (Unchained) - A sneak and skill monkey, with some new unique features.
Sage - A martial/spellcaster hybrid that specializes in ki powers and unarmed attacks.
Sagittarius - An archer class, draws from divine power in order to be gain fearsome skill with the bow and a limited ability to cast divine spells for utility as well.
Samurai (FFd20) - An aggressive melee fighter who builds up strength in battle to power their weapon skills.
Scholar - A martial class that specializes in using their intelligence and knowledge to succeed.
Scholar (FFd20) - A spellcaster that can switch modes between offense and support.
Sentinel - A martial class that emphasizes tanking and survivability.
Shadowcaster - Tome of Magic. A full caster type that uses their own casting system called Mysteries.
Shifter - A sphere caster focused around shapeshifting and gaining monster traits.
Shugenja - Complete Divine. An oriental style spontaneous divine full caster focused on the elements.
Soul Disciple - A highly versatile class, combines the powers of a martial adept with the Akashic Mysteries
Soulknife - A melee class focused around an energy sword they shape and enhance.
Soul Weaver - A sphere caster focused around the magic of life and death.
Skald - A bard/barbarian hybrid class focused on rage songs.
Spellweaver - A user of akashic magic that can also power arcane magic with their veils.
Spiritualist - A spellcaster who summons a dead spirit to aid them in battle.
Stalker - A martial adept assassin.
Storm Lord - An air and lightning themed arcane caster.
Striker - An unarmed martial class.
Summoner (Unchained) - A conjuration and utility spellcaster with a very powerful outsider companion.
Swashbuckler - A melee class using martial maneuvers and with class features focused on stylish and daring power.
Swordmage - Uses a form of spells that create temporary magic weapons that have a whole host of effects.
Swordsage - Tome of Battle. A monk or ninja like martial adept.
Sword Saint - A class that has stances and magic sword powers to devastate enemies.
Symbiat - A sphere caster focused around aiding allies and manipulating enemies.
Tactician- A psionic class specialized in leading his allies in battle.
Technician - A technology using martial class with a variety of gadgets.
Thaumaturge - A sphere caster with limited talents but more power than any other.
Time Mage - A spellcaster that can manipulate the flow of time for themselves and others.
Troubadour - A martial/spellcaster hybrid that has various roles it can fulfill and switch throughout the day.
Vigilante - A heroic or villainous class that switches between social or combat roles.
Vitalist - A psionic healer, that can switch their powers daily for utility and out of combat needs.
Vizier - An intelligence based veilweaver that is more invested in veils than others.
Void Disciple - A fate and void themed arcane caster.
Voyager - A speedy psionic class that gains special extra actions.
Warblade - Tome of Battle. The martial adept version of a fighter.
Warden - A martial/spellcaster hybrid that is focused on tanking and protecting allies.
Warder - A martial adept tank, focused on the shield.
Warlock - Complete Arcane. Casters that have unlimited use of their spell-like abilities and eldritch blast. Uses Invocations found here.
Warlord- A martial adept melee fighter and leader.
Warpriest - A cleric/fighter hybrid class focused on melee combat.
Wavekeeper - A water and cold themed arcane caster.
Wilder - A psionic full manifester, they have extremely limited powers known, but can boost those powers.
Wraith - A sphere caster that has the power to steal the bodies of their enemies.
Zealot - A defensive martial initiator that uses psionic powers.
Zodiac - A veilweaver that summons items or companions.