What are the best open source alternatives to Google Cloud?

The top open source alternatives to Google Cloud include OpenStack and Cozystack. These tools offer similar functionality while being free and open source.

Why choose an open source alternative to Google Cloud?

Open source alternatives provide transparency, community support, no vendor lock-in, and often cost savings. You can customize the software to your needs and have full control over your data.

Are these Google Cloud alternatives really free?

Yes, all listed alternatives are open source and free to use. You may need to pay for hosting if you self-host, but the software itself is free.

2 Best Open Source Google Cloud Alternatives in 2026

OpenStack manages compute, storage, and networking across VMs, bare metal, and containers via APIs or a dashboard. Trusted by Walmart, China Mobile, and more.

OpenStack is one of the most widely deployed cloud computing platforms in the world. It gives organizations full control over their infrastructure, running on-premises, in public cloud environments, or at the edge. Thousands of organizations run it in production, managing over 40 million cores globally across dozens of industries.

At its core, OpenStack pools compute, storage, and networking resources and exposes them through APIs or a web dashboard. You get standard infrastructure-as-a-service capabilities, plus additional components for orchestration, fault management, and service management to keep applications highly available.

What OpenStack supports:

Virtual machines, bare metal, and containers - not locked into a single workload type
Large-scale deployments - Walmart runs over 170,000 cores across 30+ regions on OpenStack
Telecom-grade infrastructure - China Mobile built its NFV network on OpenStack with 50,000+ servers
Autoscaling - Blizzard Entertainment uses it to handle variable load for live online games
Apache 2.0 license - fully open source, no vendor lock-in

OpenStack is a genuine alternative to proprietary cloud platforms like Microsoft Azure when you need to own your infrastructure entirely. It's the right fit for enterprises, telecoms, and service providers that need scale, flexibility, and the ability to run everything on their own hardware.

Storage can be paired with Ceph for distributed block and object storage, and teams working with container-native workloads often combine OpenStack with Kubernetes for orchestration. For infrastructure-as-code workflows, tools like OpenTofu integrate naturally with OpenStack APIs.

The project is backed by the OpenInfra Foundation and has a large, active contributor community. There is a consistent release cadence that keeps the platform current.

Transform bare metal servers into a complete cloud platform with a simple REST API for deploying Kubernetes clusters, databases-as-a-service, virtual machines, load balancers, and HTTP caching services. Build your own cost-effective cloud infrastructure or development environments.

Key advantages:

API-first approach - Built on Kubernetes with standard interfaces, avoiding vendor lock-in
Easy installation - Bootstrap using PXE or ISO methods with immutable OS for consistency
Native Kubernetes integration - Use declarative YAML manifests with RESTful API
High performance, low overhead - Efficient resource allocation with unique tenant model
Built-in monitoring - Pre-configured dashboards and alerts for every service instance
Extensible platform - Modify or expand using familiar Kubernetes primitives and FluxCD

Perfect for:

Organizations wanting to build private clouds
Development teams needing cost-effective environments
Companies seeking alternatives to expensive cloud providers
Teams requiring standardized, open-source infrastructure solutions

The platform emphasizes standardization and collaboration, using proven open-source tools and contributing improvements back to upstream projects rather than creating proprietary solutions.