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I love #FreeSoftware: It took me and #GPSCorrelate only 9 minutes to precisely batch geotag 784 pictures with 6,4 GB by using 14 different tracks, that I recorded with #Osmand during my last vacation.
Find a how to use it here: http://blog.3rik.cc/2018/02/how-to-batch-geotag-your-photos-using-free-software-and-openstreetmap/
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It is not focused on any particular niche interest - everyone is welcome as long as you follow our code of conduct!