I use Zoho Sheet ...

I use Zoho Sheet for making some of the puzzles for my website: thegriddle.net

As of right now I prefer using all PDF files for my puzzles, so the PDF export option is great for me. I also make all of my puzzles public on Zoho Sheet under the tags 'puzzle', 'griddle', and others depending on the puzzle. As more Zoho Sheet features are introduced, I can make more new kinds of puzzles. I can't wait for conditional formatting, and it will be great if shapes and other decorative elements are planned in the future!

If you see my public puzzles here on Zoho Sheet, feel free to modify them to make your own and let me know how they turn out. I'd be happy to post them for you!