FlightGear - The FlightGear flight simulator project is an open-source, multi-platform, cooperative flight simulator development project. It also simulates space flight in Earth's orbit. It's flight dynamics engine (JSBSim) is used in a 2015 NASA benchmark.
ManyChat - ManyChat lets you create a Facebook Messenger bot for marketing, sales and support.
GeoFS - Free, Web based flight simulator with worldwide satellite images.
Landbot - An intuitive no-code conversational apps builder that combines the benefits of conversational interface with rich UI elements.
X-Plane - The world's most advanced flight simulator just got an upgrade. Download the free demo today for Windows, macOS, & Linux.
Chatfuel - Chatfuel is the best bot platform for creating an AI chatbot on Facebook.