| Service | Type | RAM | Storage | Limitations |
|---|---|---|---|---|
| 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 |
| Google App Engine | PaaS | 128 MB | 1 GB | Standard Environment only Limited to Go, Java, Node.js, PHP, Python; 1 GB/day outbound traffic; 9 backend instance hours/day |
| 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 | 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" | |
| OpenShift Online v3 | PaaS | 2 GB | 2 GB | Free subscriptions expire after 60 days (can resubscribe for free) Idling after 30 minutes inactivity, hibernates 18 out of 72 hours |
Last active
September 25, 2025 17:27
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This comparison of free backend hosting servers seems good and informative, but it would be beneficial to add Back4app to the list. Back4app is a Container as a Service (CaaS) and Backend as a Service (BaaS) provider that offers a free tier. Yes, you can get 25k monthly requests, 1 GB transfer, 1 GB file storage and 250 MB data storage under its free tier plan. For further details, you can also visit this page https://www.back4app.com/pricing/backend-as-a-service.