"Ensuring an accessible and pleasant experience to all users, regardless of disability, is a key focus of Canvas. The Canvas platform was built using the most modern HTML and CSS technologies, and is committed to W3C's Web Accessibility Initiative and Section 508 guidelines.
The Voluntary Product Accessibility Template, or VPAT, is a tool that administrators and decision-makers can use to evaluate Canvas' conformance with the accessibility standards under Section 508 of the Rehabilitation Act. View more information about the Canvas Voluntary Product Accessibility Template.
General accessibility design guidelines can be found in the General Design Guidelines for Accessibility lesson (accessibility document).
More information may be found on the Accessibility Within Canvas page.
"At Turnitin, we believe that learning technologies should not limit, but enhance learning for everyone. Our accessibility program aims to incorporate accessibility into the entire product development lifecycle to ensure that our website and applications are accessible and usable.
At Turnitin, we aim to conform to WCAG 2.0 AA standards of the World Wide Web Consortium (W3C) and Section 508 of the Rehabilitation Act. But, we believe that accessibility standards are more than checklists, and are working to make our learning technologies easy to use and accessible by everyone regardless of disability or circumstance."
Additional information can be found on TurnItIn's Accessibility Statement page.
PollEverywhere does not currently have a public statement about accessibility, but does follow the Voluntary Product Accessibility Template and has released notes about its product and the various criteria listed in the template. You may download a copy of the PollEverywhere VPAT Template, which was last updated in February, 2017.
Zoom (Webinar/Online Conferencing)
"Zoom is committed to ensuring universal access to our products and services, so that all meeting hosts and participants can have the best experience possible. Zoom's accessibility features enable users with disabilities to schedule, attend, and participate in Zoom meetings and webinars, view recordings, and access administrative features across our supported devices.
Zoom has made ongoing efforts to monitor and improve our accessibility features, and has resources dedicated to accessibility questions and concerns. To reach us, please email firstname.lastname@example.org or open a support ticket at support.zoom.us."
Zoom has a lot of information about ways the company is supporting accessibility, view the Zoom Accessibility Page for more information.
Apple iTunes U is a feature within the iTunes application that can be installed on both Mac OS and Windows. The Apple company has released a variety of VPAT documents with regards to their technologies and you can find information about the latest version of iTunes for both operating systems on Apple's Voluntary Product Accessibility Templates page.
YouTube - Google
"We are committed to making accessibility a core consideration from the earliest stages of product design through release. We have formed a central accessibility team with a mandate to monitor the state of accessibility of Google products and coordinate accessibility training, testing, and consulting. Product teams will be offered training to help incorporate accessibility principles into the design and release of products. We also strive to cultivate relationships with a variety of users and advocacy groups to solicit feedback."
Learn more about Google's approach to Accessibility on their website.
There are also some specific YouTube pages for making the specific tool more accessible:
Respondus LockDown Browser and Monitor
"LockDown Browser is a client application installed to a computing device. Respondus Monitor is a web-based service that enhances the LockDown Browser product. For LockDown Browser, accessibility issues focus on the browser itself, whereas accessibility features with Respondus Monitor center on the "startup sequence" screens that appear prior to the start of an exam and the interaction with a web camera."