OK I know this has been brought up 100 times already...
I know it's on the 'to do' list... (and has been for years)
But I'm bringing up multi-threading yet again, because of this :
SFTP has now been implemented in the beta.  In the past whenever somebody requested SFTP then typical replies were "yeah yeah it will require a whole rewrite of the code, then we'll get multi-threading etc etc"  and whenever somebody in the past asked about multi-threading then typical replies were "yeah yeah it will require a whole rewrite of the code, then we'll get SFTP etc etc"
So here we are with SFTP, and yet still no multi-threading!  I love FlashFXP and have been using it for so many years, but when I need to upload a LOT of files then I need to open up FileZilla...  Why, after all these years, do I still need to open up a free open-source program to do a job that my preferred paid FTP client just can't handle efficiently?  I know the staff here must obviously be overworked and underpaid otherwise it would have been done already (and why I never complained in the past) but now that we have SFTP, surely now is the time for multi-threading!
Last but certainly not least, think about it this way : If I can upload with 5 threads, my task can be finished 5 times faster.  That means I get more time in my day!  There is no other feature that can guarantee MORE TIME IN OUR DAYS!  So that seems like a massively important feature, I can't imagine what else in the 'to do' list could be more important than giving us all MORE TIME IN OUR DAYS!
 
ps. this post's Poll doesn't seem to work.