List of free baas stuff for developerππ½
If you're looking for all programming tools around baas (not just free). Check this page List of baas Programming Tools

AWS Amplify
Accelerate your full-stack web and mobile app development with AWS Amplify. Easy to start, easy to scale. No cloud expertise needed. Powered by AWS.
Tag: aws, baas, database, hosting, hosting-dynamic, hosting-static, storage, authentication
1 Year free Tier
Build & Deploy - 1000 build minutes per month
HOSTING: 5 GB stored per month 15 GB served per month