The best alternatives to Caasy are dato cms, Netlify CMS, and Tina CMS. 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
DatoCMS is a cloud-based headless CMS designed to work with static websites, mobile apps and server-side applications of any kind. Freelancers, agencies and startups use DatoCMS to allow non-technical clients and team members to manage the content of their digital products within a web-based CMS.