12. Gamaya helps farmers check their crops using drones.

Gamaya is a Lausanne-based startup which fits drones with a hyperspectral imaging system. This type of imaging can give scientists information about the type of ground, vegetation, and even building materials used.

Drones are then flown over fields and industrial farmers can accurately measure the health of crops and their environment.

The company was started in 2014, but their devices are already being used by farmers across Europe.

Total amount raised: $800,000 (£521,000)

Headcount: 7