All

The Aldor:
Within Shattrath city, this is one of the two factions you can follow. Every action that you do in favor of the Aldor decreases your rep with the Scryers, and vice-versa.
Category: Shattrath City.
In-Game Text: An ancient order of draenei priests once run by Velen, the Aldor are currently led by High Priestess Ishanah. They are servants of the naaru in Shattrath City known as the Sha’Tar. Rivals of the Scryers.
Starting reputation: 0/3000 Neutral.
Location: Shattrath City, Terokkar Forest.
Vendors:
- Inscriber Saalyn (Aldor bank in Shattrah)
- Quartermaster Endarin (Aldor bank in Shattrah)
- Asuur (Aldor Rise in Shattrah)
Number of Quests: Few (9)
RRQs:
- A Cleansing Light = 1 Holy Dust
- Marks of Kil'jaeden = 10 Mark of Kil'jaeden = 250 rep
- 10 burning blade insignias = 250 rep, or 1 = 25.
- 8 spider venom sacks = 250 rep, stops at friendly
- Stops at friendly - 8 venom sacks - 250 rep
Mob Reputation: none

The Scryers:
Within Shattrath city, this is one of the two factions you can follow. Every action that you do in favor of the Scryers decreases your rep with the Aldor, and vice-versa.
Category: Shattrath City
In-Game Text: A gathering of blood elves that was once servants of Prince Khael'Thas, the Scryers are currently led by Voren'thal. They compete with the Aldor for the favor of the naaru in Shattrath City.
Starting reputation: 0/3000 Neutral.
Location: Shattrath City, Terokkar Forest.
Vendors:
- Inscriber Verendis (Scryer bank in Shattrah)
- Quartermaster Enuril (Scryer bank in Shattrah)
- Arodis Sunblade (Scryer tier in Shattrah)
Number of Quests: Few (8)
RRQs:
- Synthesis of Power = 1 Arcane Rune
- More Firewing Signets = 10 Firewing Signet = 250 rep
Mob Reputation: none

The Sha’Tar:
The big bosses of Shattrath City.
Category: Shattrath City.
In-Game Text: The Sha’Tar are a group of powerful naaru who rule over a rebuilt Shattrath City. With the help of the Aldor and the Scryers, they lead the battle against Illidan and the Burning Legion
Starting reputation: 0/3000 Neutral.
Location: Shattrath City, Terokkar Forest.
Vendors: Almaador in Shattrah City.
Number of Quests: XXXX
RRQs: XXXX
Mob Reputation:
Tempest Keep gives Shat'tar rep (12 rep) in all 3 5man wings: Mechanar, Botanica, and Acratraz.

Cenarion Expedition:
You meet these guys as you go from Hellfire Peninsula into Zangarmarsh.
Category: Outland.
In-Game Text: An exploratory force sent to Outland by the Cenarion Circle to study surviving life forms. The Cenarion Expedition has quickly gained in size and autonomy since the opening of the Dark Portal.
Starting reputation: 0/3000 Neutral.
Location: Zangarmarsh.
Vendors: Fedryen Swiftspear (Cenarion Refuge in Zangarmarsh)
Number of Quests: Lots (30+)
RRQs:
- Coilfang Armaments@75 rep per, from steam vaults for cenarion expedition faction --> exalted
- Identify Plant Parts = 10 Unidentified plant parts = 225 rep (Human). – Gives bag, occasionally has plant that gives another 800+ rep
- Uncatalogued Species = 1 Uncatalogued Species = 500-800 rep (obtained from bag in previous quest)
Mob Reputation:
12 faction/mob, 50 per boss – Coilfang Reservoir – The Steamvault, goes 'till exalted
XXXX – Naga in Zangarmarsh

Sporregar:
These guys are in eastern Zangarmarsh. In order to first do anything with them, you must XXXX.
Category: XXXX
In-Game Text: Sporeggar is the main city of a native outlands race of mushroom men. They are peaceful, though easy to gain faction with, they naturally dislike strangers.
Starting reputation: 500/3000 Unfriendly.
Location: Zangarmarsh.
Vendors: Mycah (Zangarmarsh)
Number of Quests: Many (14)
RRQs:
- Natural Enemies = 6 Bog Lord Tendrils = 750 rep
- The Sporelings' Plight = 10 Mature Spore Sac = 750 rep
- Glowcap Mushrooms = 10 Glowcaps = 750 rep
- Now That We're Still Friends = 750 rep
- Fertile Spores = 10 Fertile Spores = 750 rep and 1 Glowcap
Mob Reputation:
11999/12000 – Bog Giants – 10 rep per kill.
XXXX – Coilfang Reservoir – Slave Pens
- From Unfriendly to Neutral, there is a grind of Bog Lord Tendrils, which drop off the bog lords. The turnin is to a sporeggarion east of the spawning glen in southwestern zangarmarsh.
- From Neutral to friendly, you can grind Glowcap or Fertile Spores. Glowcap can be found on the gorund, Fertile Spores drop off of a good number of mobs in the marsh, typically fen striders and spore bats. However, and this is important, Glowcap is used to Purchase items from their rep-based vendor. So I'd save those for that specifically, there's some cool items, including alchemical potions, a threat-reducing cape, and a shield that poisons those who hit it.
- From friendly to honored, there is a Naga kill quest grind from one of the Sporeggarians. These naga also give Cenarion Expedition rep, and there is a Cenarion Refuge quest for their claws which you might want to do at the same time since you're already there.
- At honored, a special escort quest opens up with the Bog Lord Fhwoor, located in Sporeggar. The rewards as of last seen were subpar, but it's fun to escort the oaf. The quest itself is hard, you should at least have a healer to heal fhwoor, who can tank quite adequately most anything that comes his way. The end of the quest forces you to fight an elite and two adds, so be prepared for that.
- From honored to revered, there is nothing but bog lord grinding. However, the bog lords will stop giving rep at 11999/12000, so save a quest to push you over the edge to revered.
- There is, as of last checked, no means of getting sporereggar rep from revered to exalted.
- Sporeggar rewards 15 rep per mobs you kill in the dead mire or spawning glen.

The Consortium:
A neutral faction found at Aeris Landing in Nagrand. Upon gaining friendly reputation, they will send you packets of various gems each month, with gem quality based on your standing (reputation level) with The Consortium.
Category: Outlands
In-Game Text: The consortium is a band of smugglers and thieves. Their camps can be found in various locations of the Outlands. Members of the consortium are payed for their services at the first of every month.
Starting reputation: 0/3000 Neutral
Location: Aeris Landing, Nagrand. + Stormspire, Netherstorm + Mana tombs
Vendors:
- Karaaz (The Stormspire in Netherstorm)
- Ythyar (Guardian's Library in Karazhan)
Number of Quests: Huge (50+)
RRQs:
- A Head Full of Ivory = 3 Pair of Ivory Tusks = 250 rep (req neutral)
- Stealing from Thieves = 10 Oshu'gun Crystal Fragments = 250 rep (req neutral)
- Obsidian Warbeads = 10 Obsidian Warbeads = 250 rep (req friendly)
Mob Reputation:
- Mana Tombs Trash and Bosses gives rep.

The Violet Eye:
The organization that tasked itself with keeping track of medivh.
Category: Other
In-Game Text: A secret sect of the Kirin Tor Founded to spy on Medivh and his activities
Starting reputation: 0/3000 neutral
Location: Karazhan
Vendors: XXXX
Number of Quests: 5 known steps for the key quest, and at least 1 series that sends you into Karazhan (key quest at neutral, other quest at honored)
RRQs: none known
Mob Reputation: most trash in Karazhan gives 15 faciton/kill, bosses give 150
Exceptions:
most boss "minions" (eg: Moroes' friends) give 15, ditto individual mobs in the wizard of oz event.
Phantom guests (nonelite) - 3 faction per
Arcane Anomoly - trash before the curator, gives 7.5 faction per
Syphoner - trash before the curator, gives 1.5 faction per
All trash is still giving me rep at 2871/12000

Keepers of Time:
XXXX
Category: XXXX
In-Game Text: XXXX
Starting reputation: 0/3000 Neutral.
Location: XXXX.
Vendors: Alurmi (Caverns of Time in Tanaris)
Number of Quests: XXXX
RRQs: XXXX
Mob Reputation:
- You get rep for killing any elite mob within Escape from Durnholde and the Black Morass, they are located in Caverns of Time, Escape from Durnholde Keep and The Black Morass.

The Scale of the Sands:
Yet another faction related to the bronze dragonflight(that would make 3).
Category: XXXX
In-Game Text: XXXX
Starting reputation: 0-3000 neutral once you finish the questline that takes you to durnholde and dark portal.
Location: Caverns of Time.
Vendors: 1 vendor in Caverns of Time near the dark portal, rewards are epic 50 dps arrows/bullets and http://www.thottbot.com/beta?i=17434
Number of Quests: only one so far, requires you to kill Vael and Vashj.
RRQs: XXXX
Mob Reputation:
- You get rep for killing any elite mob within Escape from Durnholde and the Black Morass, they are located in Caverns of Time, Escape from Durnholde Keep and The Black Morass.

Tranquillien:
This is a small force of Forsaken and Blood Elves that have banded together to cleanse the Ghostlands of the remaining Scourge presence leftover from Arthas' invasion of Quel'Thalas. They can only spare their equipment to those they know they can trust.
Category: Horde only
In-Game Text: Once a High Elf town,Tranquillien became abandoned after the Scourge invaded Quel'Thalas. It has now been reclaimed by the Forsaken and the blood elfs who seek to rid the Ghostlands of the Scourge.
Starting reputation: Neutral 0/3000.
Location: Ghostlands
Vendors: Provisioner Vredigar (Tranquillien)
Number of Quests: Lots.
RRQs: None
Mob Reputation: None
Reputation is obtained purely from doing quests from Tranquillien and the nearby Sanctum of the Sun. If you complete all of the available quests, you will reach Exalted. The items available are mostly replaceable by quest rewards in the zone, but the lower level items especially are nice to have available right away. The cloak you get at exalted is none too shabby either, giving you access to a +7 Sta cloak at min lvl 16.

Lower City:
Lower City is one of the three factions found in Shattrath. It is mainly made up of refugees fleeing from the Burning Legion's onslaught.
Category: XXXX
In-Game Text: XXXX
Starting reputation: XXXX
Location: Shattrah City.
Vendors: Nakodu (Lower City marketplace in Shattrah City)
Number of Quests: Lower City has many quests, at least 20, they are found in the Lower City itself and also the refugee caravan in the bone wastes (also auchindoun itself, sethekk halls).
RRQs: XXXX
Mob Reputation:
- Shadow Labs is now all Lower City rep from trash to boss.
- Kill rep given in Sethekk Halls.

Netherwing:
Most of the nether dragons are in this faction. It is assumed this is related to the netherdrake mount. The faction is not fully implemented yet.
Category: Outland.
In-Game Text: This unusual brood of dragons was spawned from the eggs of Deathwing's Black dragonflight, and infused with Raw Nether Energies. Now they seek to find there identity beyond the shadows of there fathers's destructive heritige.
Starting reputation: Hostile (not visible till you gain Neutral).
Location: Shadowmoon Valley (although you can find netherwing's in Netherstorm and Blade's Edge Mountains as well).
Vendors: None known yet.
Number of Quests: One questline (as of this patch). You will need a flying mount (or flight form) to complete the questline. Starting quest: Kindness. At the end of the questline you will gain 42000 rep, putting you at 0/3000 neutral.
RRQs: None known.
Mob Reputation: None known.

Ashtongue Deathsworn:
Akama and his loyal and closest servants make up this faction, although they say that they have no loyalty to Illidian, their goals and what drives them are still somewhat mysterious
Category: Other (not outlands for some reason)
In-Game Text: The elite from the Broken triebe known as Astongue, officialy alligned with Illidan. The Deathsworn are Akama's most trusted lieutnants and are privy to their leader's mysterious motivations.
Starting reputation: 0/3000 Neutral.
Location: Warden's Cage, Shadowmoon Valley.
Vendors: None yet.
Number of Quests: One chain that starts from the nearby aldor or scryer camps depending on faction.
RRQs: XXXX
Mob Reputation: XXXX

Alliance

Honor Hold:
As Alliance, this is probably the first new reputation you will be encountering in the Outland. It is the Alliance counterpart of Thrallmar.
Category: Outland
In-Game Text: Vestiges of the Sons of Lothar, veterans of the Alliance that first came into Draenor, have steadfastly held on to this Hellfire outpost. They are now joined by the armies from Stormwind and Ironforge.
Starting reputation: 0/3000 Neutral.
Location: Hellfire Peninsula.
Vendors:
- Logistics Officer Ulrike (Honor Hold in Hellfire Peninsula)
- Warrant Officer Tracy Proudwell (Honor Hold in Hellfire Peninsula)
- Alliance Field Scout (east of Toreldor in Zangarmarsh)
Number of Quests: Lots (50+)
RRQs: XXXX
Mob Reputation:
1825/6000, Hellfire Citadel – Ramparts (lvl 60-62). 5 per trash mob, ~50 per boss.
6000/12000 - Hellfire Citadel – Blood Furnace (lvl 61-63) 5 per trash mob, ~50 per boss.
XXXX – Hellfire Citadel – Shattered Halls (lvl 70-72). 12 rep per elite trash, 2 per non-elite trash, 24 for legionaire champions, ~50 per boss.

Kurenai:
Alliance faction. First contact in NW Zangarmarsh (Orebor), main city in Telaar in Nagrand
Category: XXXX
In-Game Text: XXXX
Starting reputation: 0/3000 Unfriendly
Location: Nagrand.
Vendors: Trader Narasu (Telaar in Nagrand)
Number of Quests: Lots, enough to be revered by end of them.
RRQs:
- Fierce Enemies = 10 Obsidian Warbeads = 500 rep
Mob Reputation:
XXXX - For Kurenai, nearly every humanoid mob in Nagrand Gives 10 rep.

The Exodar:
This is the Draenei Capital, and now part of the Alliance forces.
Category: Alliance
In-Game Text: The naaru vessel that brought the draenei to Azeroth. Though stranded in the Azuremyst Isles, it acts as a home city for this noble race.
Starting reputation: Race dependant. (1000/6000 Friendly if Draenei)
Location: The Exodar, Azuremyst Isle.
Vendors: XXXX
Number of Quests: LOTS! All around world.
RRQs: Cloth donations (cloth quartermasters)

Other RRQ's:
Terrokar forest - alliance stronghold - 30 Arroka feathers = 250 alliance rep.