A multipurpose grammar and style checker that can improve your writing and train you to write better prose. It also has an AI based rephrase feature.
A free trial of new software for fiction writing, and storyboarding. I haven't tried it yet but It looks interesting, with lots of features.
A high quality grammar checker that deals with grammar and punctuation and now has an AI component included that helps detect and rephrase awkward or unclear sentences and pargraphs.
Books and eBooks
All writers find writing book descriptions harder than writing books. this will guide you through writing your back cover copy.
Thomas Umstattd Jr.'s Author Media is a family business that helps authors learn how to build a platform, sell more books, and change the world with writing worth talking about.
A website full of resources about the craft covering everything from overcoming writer's block, creating exciting characters, plotting, worldbuilding, etc