[X] Planetary Closure Administration - The standardized, superior MTs, LCs, HCs, EKDROMOI, and other weapons developed by the PCA to keep Rubicon III closed. This part of the tech tree is particularly useful for militaries and militias that rely on teamwork and standard gear over individual skill.
[X] Rubicon Research Insititute - The cream of the crop. Sophisticated, expensive Coral-based technologies, culminating in the fearsome C-Weapons. The best of the best… with a matching cost. Technologies & equipment from this part of the tech tree are far more sophisticated than anything any other branch on the tree can bring to bear, but their expense and the rare materials they require mean they're really only suitable for equipping your host and her closest allies.
[X] Corporate - MTs, ACs, and the weapons they wield - starts you down the path to weapons and technologies inspired by the Corporations and the independent mercenaries they hawked their wares. Unlocks from this part of the tech tree are particularly useful for individualistic fighters.