Suppose that there is a company named Megasoft. Megasoft has just launched their new software application to the public called Softronic. Which is correct: Softronic by Megasoft or Softronic from Megasoft?
Both are fine.
Softronic by Megasoft
This implies that Megasoft made Softronic.
Softronic from Megasoft
This only tells you that Megasoft is the source. They might have made it, or they might just be the distributors.
I said implies, but bear in mind that salespeople often imply things that aren't true.