You should not compare this with a commercial program, I'am
a hobbyist and not a professional.
I think it's a good effort for an open source product.
If I my add something as well. Use a local git program to commit and add files instead of using drag 'n drop from the website. Add commit massages with a short description of what you changed.
I would also remove all the logos in the program.
Keep at it :)
Edit: honestly I think my first message is a bit mean, I wish I could retract it because working hard on a project this only to be met by that is really shitty. But I wanted to highlight that knowing the use cases for your project is really important. I really believe with a few UI changes this could be comparable to the software I currently use, having that as open source would be awesome.