Is there a problem with the zillion products already out there (EaseUS, Minitool, Aomei, Active, Macrorit, Nubi, IM-Magic, Paragon)? 
What is it that you need to do with a new tool? The only thing that I see missing in most is the inability to handle ext<n> Linux-based partitions as far as resizing is concerned.
What is it that you need to do with a new tool? The only thing that I see missing in most is the inability to handle ext<n> Linux-based partitions as far as resizing is concerned.