Just added tiling preview, let me know if you have any specific tools in mind.
Viewing post in Seamless Textured
Very cool!
- Skew image (assume that is already included)
- Some tool for changing lightness (like a brush to make areas lighter or darker)
- Some tool for cloning areas (clone brush is common in image editing)
It's the sort of thing you could definitely rabbit hole so I'm not sure it's actually worth your time to do it. There will always be more requirements.
So in any case I will make a purchase - tiling preview is enough for me :)