Adobe Spark: https://spark.adobe.com
Common Stock Photography
REV uses AP Style, here's a handy cheat sheet.
Hemingway app — Want to make sure your writing flows? Click here, paste your story in, and this website will identify issues for you.
Title converter tool — Having trouble figuring out which words in your title should be capitalized? Click here, type your title into the window, choose which style you want (AP, Chicago, etc), and it will spit out the properly capitalized title.