Remote research software

In this age of corona this seems a more appropriate question than ever; what software would you recommend for conducting remote user reserch?

The key criteria here are:

  • Allows for voice chat
  • Allows for the sharing of links
  • Allows for screen sharing

Preferences are

  • Free
  • Browser-based and doesn't require any extra install
  • Easy to use (for participants who may not be so techy)

Alternatives that I have considered are

  • skype, which works for those who are already users but it isn't as omnipresent as it once was.
  • join.me, which works very well all round, including being browser based, but is quite expensive after your trial is over
  • zoom, which is a lesser and more expensive take on join.me
  • eztalks, which requires installing software so fails

Any which I might have missed which work well for the purposes of user testing?