(edited)
The Extra Mod by Chiyu, incorporated many technologies, and units possible from a good bit of the official civilization scenarios and expansions including Final Frontier (all the galactic units and techs). For those interested, some of it probably could be ported to C2C relatively easily. It's possible that some of the technologies for other eras were not incorporated into C2C. It really is a well made mod. I recommend looking it over.
http://forums.civfanatics.com/showthread.php?t=234906
Extra is a mod that that combines a lot of material from various official Firaxis mods (including Civ4 - Colonization) into one, big playable package. The majority of the content comes from the following mods: Warlords' Chinese Unification, Warlords' Peleponessian War, Warlords' Alexander the Great, BtS' Charlemagne's Wars, BtS' Next War, BtS' Final Frontier, BtS' Road to War and of course Colonization.
Technologies
- Biological Warfare, from Next War (BtS)
- Shielding, from Next War (BtS)
- Cloning, from Next War (BtS)
- Bionics, from Next War (BtS)
- Cold Fusion, from Next War (BtS)
- Cybernetics, from Next War (BtS)
- Advanced Shielding, from Next War (BtS)
- Advanced Sailing, from Peloponnesian War (Warlords)
- Improved Formations, from Peloponnesian War (Warlords)
- Crop Rotation, from Chinese Unification (Warlords)
- Stirrups, from Alexander's Conquests (Warlords)
- Astrogation, from Next War (BtS)
- Bowyers, from FfH: Age of Ice (BtS)
- Chivalry, from Charlemagne's Wars (BtS) *also known as Courtly Manners
- Desert Subsistence, from Genghis Khan (Warlords)
- Elephant Domestication, from Genghis Khan (Warlords)
- Quantum Control, from Final Frontier (BtS)
- Orbital Engineering, from Final Frontier (BtS)
- Squadron Focus, from Final Frontier (BtS)
- Capital Ship Focus, from Final Frontier (BtS)
- Nano-Construction, from Final Frontier (BtS) *also known as Advanced Nanite Construction
- Alloy Frames, from Final Frontier (BtS) *also known as Alloy Frame Construction
- Smart Weapons, from Final Frontier (BtS) *also known as Fusion Cannon
- Artificial Intelligence, from Final Frontier (BtS) *also known as Intuitive Computers
- Planet Colonization, from Final Frontier (BtS) *also known as Galactic Domination
- Terraforming
- Antigravity
- Antimatter
- Mutability
Units
- Biological Warfare Missile, from Next War (BtS)
- Clones, from Next War (BtS)
- Automatons, from Next War (BtS)
- Dreadnought, from Next War (BtS)
- Cyborg, from Next War (BtS)
- Assault Mech, from Next War (BtS)
- Colony Ship, from Final Frontier (BtS)
- Alpha Cruiser, from Final Frontier (BtS)
- Alpha Battleship, from Final Frontier (BtS)
- Alpha Carrier, from Final Frontier (BtS)
- Fighter Squadron, from Final Frontier (BtS)
- Bomber Squadron, from Final Frontier (BtS)
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- Future Gunship, from Final Frontier (BtS)
- Construction Ship, from Final Frontier (BtS) *now as an antigravity unit
- Invasion Ship, from Final Frontier (BtS) *now as an antigravity unit
- Alpha Destroyer, from Final Frontier (BtS) *now as an antigravity unit
- Defense Ship, from Final Frontier (BtS) *now as an antigravity unit
- Starbase, from Final Frontier (BtS) *now as an antigravity unit
- Antimatter Bomb, from Final Frontier (BtS) *renamed from Anti-Ship Missile
- Mutant, from Afterworld (BtS)
- Supermutant, from Afterworld (BtS)
- Sentinel, from Afterworld (BtS)
Promotions
- Upgraded Engines, from Final Frontier (BtS)
- Improved Engines, from Final Frontier (BtS)
- Advanced Engines, from Final Frontier (BtS)
- Upgraded Storage Bay, from Final Frontier (BtS)
- Improved Storage Bay, from Final Frontier (BtS)
- Advanced Storage Bay, from Final Frontier (BtS)
- Tracking Equipment, from Final Frontier (BtS)
- Assault Munitions, from Final Frontier (BtS)
- Upgraded Armor, from Final Frontier (BtS)
- Improved Armor, from Final Frontier (BtS)
- Advanced Armor, from Final Frontier (BtS)
- Repair Facilities, from Final Frontier (BtS)
- Capital Ship Tactics, from Final Frontier (BtS)
- Squadron Tactics, from Final Frontier (BtS)
- Antigravity Tactics
Buildings
- Biological Warfare Lab, from Next War (BtS)
- Arcology, from Next War (BtS)
- Arcology Shielding, from Next War (BtS)
- Advanced Shielding, from Next War (BtS)
- Cloning Factory, from Next War (BtS)
- Mind Control Center, from Next War (BtS)
- Capital Shipyard, from Final Frontier (BtS)
- Squadron Factory, from Final Frontier (BtS)
- Nutrition Facility, from Final Frontier (BtS)
- Mining Plant, from Final Frontier (BtS)
- Stardock, from Final Frontier (BtS)
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- Training Compound, from Final Frontier (BtS) *also known as School of Zealots
- Commercial Satellites, from Final Frontier (BtS)
- Particle Accelerator
- Antimatter Plant
National Wonders
- Centers for Disease Control, from Next War (BtS)
- Trading Company, from Rhye's and Fall of Civilization (BtS)
- High Walls, from Peloponnesian War (Warlords)
- Squadron Defense Network, from Final Frontier (BtS)
- Olympic Park, from Rhye's and Fall of Civilization (BtS)
World Wonders
- Wembley, from Rhye's and Fall of Civilization (BtS)
- Reichstag, from The Road to War (BtS)
- Big Ben, from The Road to War (BtS)
- Torii, from The Road to War (BtS)
- White House, from Road to War (BtS)
- Channel Tunnel, from Rhye's and Fall (BtS)
- Mission to Mars, from Next War (BtS)
- Trade Fair of Troyes, from CivRev
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- Himeji Samurai Castle, from CivRev
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- The Silk Road, from CivII *originally known as "Marco Polo's Embassy"
- World Bank, from CivRev
- Tower of Babel, from CivRev
- Sydney Opera Hall, from CivRev
- The Sphinx, from CivRev
- Magellan's Expedition, from CivII
- Arc de Triomphe, from Road to War (BtS)
- The School of Confucius, from CivRev
- Brandenburg Gate, from CiV
- Circus Maximus, from CiV
- The Louvre, from CiV
- Machu Picchu, from CiV
Bonuses
- Olives, from Peloponnesian War (Warlords)
- Cotton, from Chinese Unification (Warlords)
- Tea, from Chinese Unification (Warlords)
- Salt, from Chinese Unification (Warlords)
- Hit Football Event, from Rhye's and Fall of Civilization (BtS)
- Hemp, from Chinese Unification (Warlords)
- Citrus, from Chinese Unification (Warlords)
- Jade, from Chinese Unification (Warlords)
- Titanium, from Final Frontier (BtS)
- Tobacco, from Civ4 - Colonization
- Bison, from CivII
- Rubber, from CivIII
- Pearls, from CiV
Improvements
- Olive Press, from Peloponnesian War (Warlords)
- Lodge, from Civ4 - Colonization
Civics
- Absolutism (Government), from Chinese Unification (Warlords)
- Judicial (Legal), from The Road to War (BtS)
- Barter Economy (Economy), from Chinese Unification (Warlords)
- Shamanism (Religion), from Chinese Unification (Warlords)
- Authoritarian (Legal), from Road to War (BtS)
- Technocracy (Government), from Final Frontier (BtS)
- Mechanized Workforce (Labour), from Final Frontier (BtS)
- Industrialism (Economy), from Final Frontier (BtS)
- Animism (Religion), from Chinese Unification (warlords) *renamed from Daoism
- Militia (Military), from Chinese Unification (Warlords) *Military is a new civic group
- Feudal Levy (Military), from Chinese Unification (Warlords)
- Capital Ship Doctrine (Military), from Final Frontier (BtS)
- Squadron Doctrine (Military), from Final Frontier (BtS)
- Meritocracy (Labor), from Chinese Unification (Warlords)
- Professional Army (Military), from Chinese Unification (Warlords)
- Fundamentalism (Religion), CivII *included to support the Fanatic unit
- Suzerainty (Legal), N/A *included to replace Legalism, because Legalism was plain weird
Traits
- Agricultural, adapted from CivIII
- Scientific, adapted from CivIII
- Seafaring, adapted from CivIII
- Diplomatic, included to enable more combinations
- Nomadic, included to enable more combinations
Much of this isn't useful for the Galactic Era, but the Final Frontier parts are.