The best alternatives to Osmo Projector are Savvy, Learning Virtual Reality, and OnTrack. If these 3 options don't work for you, we've listed a few more alternatives below.
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Enterprise Ready Conference by WorkOS— For prod/eng leaders —speakers from OpenAI, Vanta, Canva
OnTrack uses keyword detection to make sure that the sites you are browsing are related to the specific subject you have selected. Multiple strictness modes are available, as well as a customized whitelist for mandatory sites to stay unblocked.