NWEA Assessments - NWEA Assessments creates a personalized assessment experience by adapting to each student's learning level.
draw.io - Online diagramming application
ALEKS - ALEKS is a web-based artificially intelligent assessment and learning system that uses adaptive questioning to accurately determine exactly student knows.
LucidChart - LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.
ExamView Assessment Suite - ExamView lets you can create assignments, launch classroom assessment questions and collect real-time responses to evaluate student performance.
PlantUML - PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.