https://www.noredink.com/

Grammar and writing (K-12)

A truncated version, is available free of charge for individual teachers.

"We believe that “playing with language” is an essential part of learning to write. That’s why we have students drag in commas, click words to capitalize them, throw out unwanted punctuation, and edit parts of sentences directly whenever possible. We also design exercises that have multiple correct answers, as there’s more than one way to write a sentence. NoRedInk builds stronger writers through interest-based curriculum, adaptive exercises, and actionable data."

https://www.mobymax.com/moby-learning

Reading (K-8)

"Register for our free version with absolutely no obligation.

MobyMax combines award-winning curriculum covering 27 K-8 subjects with diagnostic testing, automatic progress monitoring, student motivation tools, communication tools, and more."

https://www.writeabout.com/

Writing (2-12)

Teachers can access a free trial that allow 5 posts per student.

"It's a platform for writing and a community for publishing writing...regardless of the genre, purpose, length or audience. When you want students to transition their writing skills into a digital space...when you want to empower them with choice and visual inspiration for creative sparks...when you want them to have an authentic audience for their writing...when you want them to leverage multi modal tools like audio and images...that's where we come in! "

https://storybird.com/

Writing (all levels)

Teachers can access a free one month trial. There is a monthly charge after free trial expires.

"a unique language arts tool focused on visual storytelling. We curate original art from illustrators, and our library of 10,000+ images inspires young writers to create picture books, comics, longform chapter books, poetry, and flash fiction. Storybird’s writing curriculum offers 300+ lessons, quizzes, and writing prompts created by experienced educators and expert authors, aligned with Common Core educational standard. "