Films on Demand has a selection site that is organized by subject area. Not everything at the site is available in streaming format but it is possible to filter by Media Type "Streaming Video" on the left.
Alexander Street Press has a browsable list of streaming titles available for purchase.
Vendors who sell streaming videos on a title-by-title basis include:
The Library Request form must be filled out for each title being requested.
Streaming video requests are best submitted via the library's order request form.
After logging in, select your Department and under Format, select DVD/VHS/Streaming Video:
On the following request screen, the key fields to include are:
1) Title
2) Format
3) URL