The best alternatives to Kontxt are Mindmesh, Plutoview, and Findnlink. If these 3 options don't work for you, we've listed a few more alternatives below.
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Mindmesh is the workspace that puts you in control. Centralize work, notes, todos, and meetings. Jump back in in an instant. Focus on what you should be doing, right now.
Plutoview is a shared browser solution designed to make remote research and Web-based collaboration effortless. Add up to 100 users to a single Web session, and have as many Web session open as there are group members.
Virtual rooms are like real ones where you can walk, talk and move objects. We offer many collaboration tools for teambuilding, brainstorming, lessons and other activities. GetLocus isn't a video chat, but a meeting space. Get your location in a digital world!
RHTRH is an open source Chrome extension that raises your (virtual) hand on Google Meet when you raise your (physical) hand. RHTRH works with on any Chromium browsers for all organisations using Google Workspace.