https://creativemarket.com/ianbarnard/273499-PatternPress-Pattern-Creator

PatternPress makes the process of making seamless patterns easy and also adds a heap of extra touches to make them look even more amazing. Plus you can use your finished patterns to sell on your own store here on Creative Market or as prints on sites like Etsy.

Not only can you make repeating patterns, but you also get these cool things too:
- Choose between offset and straight layouts
- Apply included Watercolor, Gold & Silver fills to your shapes (CS6-CC only)
- Add textures & ink marks to make them look hand stamped
- Textured paper backgrounds
- Change the color & background color of your patterns
- Over 60 bonus hand drawn shapes to get you started (for commercial use too!)
- Easy export your patterns and start using your patterns in just a few clicks