The best alternatives to Kakeru are Rocketboard, Mural, and A Web Whiteboard. 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
Draw together in real time, from anywhere! In seconds, anyone can follow along with your drawing or draw with you from the app or on the web. Use Scribble alongside a call; talk with FaceTime or any other app you like.
Limeboard is a visual collaboration app designed to empower your creativity through a digital handwriting experience. Organize ideas on infinite boards and collaborate with multiple people in real time. Start creating with us.