The best alternatives to Product Slack are Product Hunt, Blinkenlights, and Messenger Hunt. 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
Founded in 2013 as a tiny side project, Product Hunt has become the place for makers and companies to launch their latest app, gadget, or physical products to the world. It's a global community of friendly folks sharing and discussing the latest in tech.