[Spore]

Recently NASA released a lot of Free software on their site for the public, provided you have an account with them, which is easy enough to set up, and that you request it from their categories:

• Business Systems and Project Management
  
• System Testing
  
• Operations
  
• Design and integration tools
  
• Vehicle management
  
• Data servers processing and handling
  
• Propulsion
  
• Structures and mechanisms
  
• Crew and life support
  
• Data and image processing
  
• Materials and processes
  
• Electronics and electrical power
  
• Environmental science
  
• Autonomous systems
  
• Aeronautics
  

Check it out at: https://software.nasa.gov/