The best alternatives to The Sharkle are Stumbled, Astronaut, and Random Peek. 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
Stumble through the internet and discover random websites. Stumbled is a curated collection of anything interesting, weird or astonishing; websites of exceptional quality, sites to kill time or learn something new.
There are so many awesome projects out there and we only know a small fraction of them. Select the type of products you are interested about and get blasted to one of them! After you initially set your preferences, you can use this link get blasted directly (you can also set it as you homepage to get blasted every time you open a new tab).