For Etsy Sellers:
- EtsyHacks - all sorts of helpful tools for sellers
- Craftcult - see who hearts your shop, who hearts your items, and whether you've been featured somewhere on Etsy
- Craftopolis - see if you're in a Treasury, see when a Treasury is going to open up
- Statsy - tools to let you see where your items come up in search results (Locator), subscribe to a feed to let you know if your item has been on the front page (Featurator), and a couple of other nifty tool
- Etsy Seller Handbook - Lots of helpful info that was posted in the Storque
- Sellers Assisting Sellers - How to get the sales you want, blog by the Etsy team Sellers Assisting Sellers.