1. Helium10When it comes to new product development, keyword research and listing optimisation, you’ll struggle to do better than Helium10. With a surprisingly advanced feature-set and a Brand Gate Checker, Helium10 is one of the most comprehensive solutions out there. Instead of being a single tool, Helium10 is an entire suite of over a dozen different ones, making it incredibly varied and versatile and great value for money too. A popular solution for an Amazon competitor research tool, Helium10 is packed full of ways to check out what the rest of the industry is doing. Want to know more? Read our full Helium 10 review here!