Pix 4D was on of the first solutions for processing photogrammetric drone data. It has had a long time to develop a very advanced and powerful, if complicated piece of software. This is generally too much for most applications, though we use it ourselves for R&D purposes, and recommend it to any clients planning such activities. All processing is done locally and so not net connection is required, though a fast computer is recommended.
It is capable of processing almost any type of data, including RGB, Multispectral and Thermal, provided the imagery has been geo-tagged. It provides multiple layers of data analysis and reporting, as well as data accuracy and quality reports. Custom formulas and indices can be input and adjusted, and data can be exported to Google Earth for ground truthing, or direct to farm software/machinery via shapefiles.
Pix4D AG £340/3 Months. £1100/Year. £2500 full license.