www.blendspace.com I chose blendspace because its easy for our department to add resources for test remediation. Its similar to thinglink but i am more use to blendspace
www.socrative.com I chose socrative because its a great tool to use as a formative assessment. It gives instant data to let me know what I need to re-teach.
www.gradecam.com This app/site is very useful for quick assessments. Instant feedback. And it generates quizes. Grades you assessments with the camera on your laptop or ipad.