Free Backend Hosting in 2026: Where to Host APIs & Servers

Every web or mobile app needs a backend. Whether it is a REST API serving a React frontend, a GraphQL endpoint powering a mobile app, or a background worker processing image uploads, the server-side code needs to live somewhere. And for most developers building side projects, prototypes, or early-stage products, the question is not where to host — it is where to host without paying until the project justifies it.

The free backend hosting landscape in 2026 looks different from a few years ago. Heroku's free tier is long gone. Fly.io pulled back its trial. Several platforms that used to offer generous always-on containers have quietly introduced credit card requirements or slashed their resource caps.

This guide breaks down both serverless and container-based options, compares what each platform actually gives you for free, and helps you pick the right fit for your specific backend workload.

Serverless vs. Container Hosting: Which Does Your Backend Need?

Serverless functions execute in response to events — typically HTTP requests — and shut down immediately after returning a response. You do not manage servers, and you pay only when code runs. The trade-off is strict constraints: execution timeouts, limited runtime customization, no persistent connections, and cold starts.

Container hosting gives you a full runtime environment. Your backend starts, stays running (or sleeps and wakes), and handles requests like a traditional server. You can open WebSocket connections, run background threads, use any language or framework, and install system-level dependencies.

Best Free Serverless Options for Backend APIs

AWS Lambda

The original serverless platform still offers the most generous free tier: 1 million requests and 400,000 GB-seconds of compute per month. Lambda supports Node.js, Python, Java, Go, .NET, and Ruby natively. The downside is complexity — you need API Gateway, IAM permissions, and CloudWatch logging.

Vercel Functions

Vercel's serverless functions are the easiest to deploy if you are already in the Vercel ecosystem. The free tier includes 100 GB-hours of execution with a 10-second timeout. That timeout is the key limitation for heavier backend logic.

Netlify Functions

125,000 invocations and 100 hours of runtime per month on the free tier. Runs on AWS Lambda under the hood without the configuration overhead.

Cloudflare Workers

Workers run on the edge — your code executes in data centers closest to your users. The free tier gives you 100,000 requests per day. The catch is the V8 isolate runtime (not Node.js) and 10ms CPU execution limit on the free tier.

Best Free Container Hosting for Backends

SnapDeploy

SnapDeploy was built specifically around Docker containers. The free tier gives you 2 containers with 512 MB RAM and 0.25 vCPU each. You get 100 compute hours (one-time, not monthly). No credit card required.

SnapDeploy supports workloads that serverless cannot touch: WebSocket servers, background workers, cron jobs, and services with native system dependencies. Deploy by pulling a Docker image, connecting a GitHub repo with a Dockerfile, uploading an artifact like a JAR or ZIP, or using 1-click templates.

The honest limitations: 100 one-time hours means you need to plan usage or move to a paid plan for anything long-running. Custom domains require the Starter plan ($39/mo). The wake page feature is on the Hobby plan ($9/mo). No free database — that is a paid add-on.

Render

Render offers 750 hours per month (renewing monthly), 512 MB RAM, and shared CPU. No credit card required. Free-tier services sleep after 15 minutes of inactivity with 30-50 second cold starts. Free PostgreSQL database with a 90-day expiration.

Railway

Railway provides a one-time $5 credit plus $1 in free credit each month. Resources are generous (up to 8 GB RAM, 8 vCPU) but credits deplete based on actual consumption. Includes built-in PostgreSQL, MySQL, Redis, and MongoDB provisioning.

Google Cloud Run

Cloud Run offers 180,000 vCPU-seconds, 360,000 GiB-seconds, and 2 million requests per month for free. Runs Docker containers natively and scales to zero. Requires a credit card and Google Cloud familiarity.

Koyeb

1 free web service with 0.1 vCPU, 512 MB RAM, and 2 GB SSD. At 0.1 vCPU, compute power is the main constraint.

Container Platforms Compared

Head-to-Head: Top 3 Platforms for API Hosting

SnapDeploy: Best for Docker-Native API Deployment

If your backend is already containerized, SnapDeploy offers the cleanest path from Docker image to running API. The platform handles WebSocket APIs, background job processors, and services with native system dependencies. Check the full deployment guide for setup details.

Render: Best for Long-Running Development APIs

Render's 750 monthly hours give you the longest runway for keeping a backend API running without paying. The cold-start problem makes it unsuitable for APIs that external users call unpredictably, but for your own development workflow, the monthly renewal is valuable.

Railway: Best for Full-Stack Backend with Database

When your API needs a database, Railway's built-in provisioning eliminates the need to set up an external service. The credit-based model is unpredictable for sustained hosting, but for building and testing a complete backend stack in short sprints, Railway provides the most integrated experience.

Architecture Recommendations

• Sporadic or development traffic: Platforms with auto-sleep or scale-to-zero (Render, Cloud Run, Koyeb) maximize your free-tier longevity.
• Consistent traffic: Railway's always-on model works until credits run out. Cloud Run's fast cold starts offer a reasonable middle ground.
• Backend needs a database: Railway gives the most integrated free database experience. For other platforms, pair with Supabase (PostgreSQL), PlanetScale (MySQL), or MongoDB Atlas.
• WebSockets, queues, or background processing: Serverless is out. Use SnapDeploy, Railway, or Cloud Run.

Conclusion

Free backend hosting in 2026 is viable but requires matching your workload to the right platform type. Serverless handles lightweight APIs with minimal setup. Container platforms like SnapDeploy, Render, and Railway cover everything else — WebSockets, background jobs, custom runtimes, and full Docker workflows.

No single platform is perfect for every backend. Start with the free tier that fits your traffic pattern, build until you outgrow it, and then decide where to invest. Deploy your backend on SnapDeploy — no credit card, no buildpack constraints, just your Docker container running in minutes.