Organisations are entities that are primarily suited as businesses, but they may be charities, religious groups/churches. worker's unions, political parties, or people's rights groups.
All players can join NPC organisations provided they are able to mustre the requirements which is usually as simple as passing an interview. Player organisations are created by the players themselves and joining those orgs is something that the org creator is responsible for administering.
Amchar Cybertechnics
Curia Regis / Vulpine Executive Justice Department (VEJD)
Fullerton Electric Industries
Genesis Black Operations
Hiveclan Guardians
Lizardfolk Magus Cabal
Mobile Armed Dynamics
Terran Joint Special Operations Command (TJSOC)
Montiva Group
Officium Experimentis
Q-9 Corporation
Rawling Personal Arms Company
Rheinmetall
Section 0
Sephina Marigold Intergalactic
Starbound Astrometrics
Unified Police Network
Venture Management
Terrestrial-Scale
Titanfibre