Free backend hosting

See also:

Service	Type	RAM	Storage	Limitations
👉 Adaptable	PaaS	256 MB	Non-persistent? (1 GB database storage available)
AWS EC2	IaaS	1 GB		⚠️ Only free for 1 year
Azure App Service	PaaS	1 GB	1 GB	⚠️ 60 CPU minutes/day
Azure VM	IaaS	1 GB	2 GB (non-persistent)	⚠️ Only free for 1 year
👉 Fly.io	PaaS	256 MB (2 instances)	1 GB (persistent)	160 GB/month outbound traffic (broken down by region) ❓ Trial plan (2 instances and 1 GB storage) doesn't require card, but does it expire? ⚠️ Hobby plan (3 instances and 3 GB storage) requires credit card, no way to avoid accidental overage fees
Google App Engine	PaaS	128 MB	1 GB	Standard Environment only Limited to Go, Java, Node.js, PHP, Python, Ruby 1 GB/day outbound traffic; should be able to avoid overage fees
Google Compute Engine	IaaS	0.6 GB	30 GB	1 GB/month outbound traffic (not including China or Australia) ⚠️ After the first year there's no way to avoid accidental overage fees
~~Heroku~~ (discontinued) 😭	PaaS	512 MB	Non-persistent	Idling after 30 minutes inactivity, limited to 550 hours/month
IBM Cloud Foundry	PaaS	256 MB		⚠️ Sleep after 10 days, deleted after 30 days of no "development activity"
👉 Northflank	PaaS	??? (2 instances)	Non-persistent	⚠️ Credit card required for signup, won't be billed on the free tier
OpenShift Developer Sandbox	PaaS	7 GB	15 GB	⚠️ Expires after 30 days (can resubscribe for free but not extend subscription), pods are automatically deleted after 12 consecutive hours of runtime
Oracle Cloud	IaaS	1 GB each for 2 VMs (AMD CPU) 24 GB across up to 4 VMs (ARM CPU)	200 GB across 2 volumes	AMD CPUs limited to 1/8 of 2 CPUs per VM ⚠️ Payment method required
~~Railway~~ (discontinued)	Paas	512 MB	1 GB	Limited to 500 hours/month 100 GB/month outbound traffic
👉 Render	PaaS	512 MB	Non-persistent	No persistent storage Idling after 15 minutes of inactivity 750 hours runtime/month

Aicirou/free-backend-hosting.md