Open source software solutions might come and go. That is a reality that might have hit you painfully in the past, any time that you were searching for a software solution, found reference to a great sounding one in a blog or forum post, only to go to the project page and learn that it hasn’t been in active development in over a decade.
If SFTPGo works well for you, still consider subscribing to a support plan. By doing this, you will help us make the ongoing development of SFTPGo sustainable, and so SFTPGo will continue to work well in the future and keep pace with the advances in technology.
Furthermore, with a support plan we establish a channel of reciprocal access and trust and if you should have any issues, for example an edge case with a particular client or such, you are using a SFTPGo copy supported by the authors and maintainers.