If you're looking for a tool to create engaging and accessible learning environments, Kami is a strong contender. It has more than 40 annotation tools, including multimedia resources and customizable elements like drawing, highlighting and text boxes. Kami also has accessible learning tools like visual supports, Read Aloud functionality and Voice and Video Comments, so it's good for different learning styles. It works with common tools like Google Classroom, Schoology, Canvas and Microsoft Teams, so it should fit into your workflow.
Another good choice is Top Hat, which is geared for interactive courseware to get students more involved. It has customizable textbooks, real-time data insights and interactive assignments and quizzes to get students more involved. Top Hat also has Top Hat Pages for delivering content to students and hundreds of editable textbooks, so it's good for teachers and administrators who want to personalize learning for their students.
If you want a suite of tools, check out Pear Deck Learning. It has assessment, immediate feedback, differentiated instruction and gamified practice to keep students on track. With tools like Pear Assessment, Pear Deck, Pear Practice and Pear Deck Tutor, Pear Deck Learning has a lot of options for different needs, and it works with Google and Microsoft tools, so it's good for teachers, schools and districts.
Last, Formative has a variety of tools for interactive assessments and instructional materials. Teachers can convert PDFs and Google Docs into auto-graded quizzes and add multimedia to reading passages. Formative also offers real-time feedback, student progress tracking and secure integrations with learning management systems, so it's a good option for getting students more involved and learning faster.