The best alternatives to Knocknock are Picniic, Oh Bother, and Kinzoo. If these 3 options don't work for you, we've listed a few more alternatives below.
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AssemblyAI— Speech-to-Text API with superhuman accuracy
Better technology for kids is here. With Kinzoo, children, parents and extended family come together on a single private platform — sharing experiences and making memories that wouldn't otherwise exist.
The one app you need to manage life with flatmates. Share a shopping list, track your expenses and tasks. Don't forget to take out the trash! Dark mode and a few nifty details, just works. Free with ads or very cheap.