NeuronWriter

This tool has been a huge addition to my setup, allowing me to put a highly-optimized content on my websites. With Neurowriter I can cover non-obvious keywords, optimize descriptions and titles, create great outlines and that's a pleasure to look at how bad is SEO score at my competitors, haha! This is just a small part of a powerful toolset that is offered here.
I went with Tier 3 for all the options available and Neurowriter has proven itself a great overall.