Check out these two great tools that have nothing to do with each other.
Problem-attic is a testing bank full of standardized test questions from numerous states, including and NAEP. Users can create their own assessments by selecting questions from a considerable list of topics. The tests do appear to be limited to English, math, social studies, and science, but they do include multiple choice and short and long constructed response questions. The questions are solid, and the fact that you can quickly pick and choose what you want makes it easy to make a high quality test. Question-editing features, as well as access to some Common Core exams, can only be accessed with a subscription.
Lucidchart is a diagramming tool that makes constructing diagrams, flow maps, Thinking Maps, graphic organizers, and floor plans easy. Highly intuitive and simple to use, students master the program in a matter of minutes. It allows them to create collaboratively, just as they might cowrite a Google Doc, and to share, save, print, or even embed their chart on a website. Check out what a few of Liza Knight’s kids did with Lucidchart.
Hope you find one of these tools useful. Let me know how I might help you with them.