RunsOn
Self-hosted GitHub Actions runners, 11× cheaper than GitHub-hosted
What is Runson?
RunsOn provides self-hosted GitHub Actions runners using ephemeral EC2 instances in your own AWS account. Deploy via a single CloudFormation stack to launch fresh, on-demand compute for each job—no pools, idle runners, or controller management needed. It solves the complexity of ARC autoscalers and Windows runner pain by offering a simpler, cost-effective alternative that boots in ~30 seconds and terminates immediately after.
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Key Features of Runson
- Dynamic instance selection via label queries
- S3-backed caching with no 10GB cap
- Nested virtualization (KVM & Hyper-V)
- Ephemeral EC2 instances per job
- Spot-to-on-demand retry
- Per-job cost reporting
- Static egress IPs
- Warm pools
- BYO AMIs
- Docker layer caching
Who Should Use Runson?
Reduce GitHub Actions compute costs for high-CPU workloads
Run Android emulators and VM-based e2e tests
Scale Windows containers and nested virtualization
Accelerate CI/CD pipelines with faster caching
Manage compute in your own AWS account with fine-grained control
Runson: Pros & Cons
✓Pros
- 7–12× cheaper than GitHub-hosted runners
- No idle runners or controller overhead
- Fresh isolated box per job (~20s boot time)
- Flexible instance selection with live spot capacity resolution
- S3 caching without GitHub's 10GB limit
- Built-in nested virtualization support
- Per-job cost transparency
- One CloudFormation stack setup
✕Cons
- Requires AWS account and CloudFormation knowledge
- Dependency on AWS spot/on-demand pricing fluctuations
Frequently Asked Questions about Runson
How much cheaper is RunsOn than GitHub-hosted runners?
RunsOn is 7–12× cheaper than GitHub-hosted runners. For example, a 16-CPU runner costs ~$0.23/hr on AWS spot versus $2.52/hr on GitHub-hosted.
How long does it take to boot a runner?
Each job gets a fresh EC2 instance that boots in approximately 20–30 seconds and terminates immediately after the job completes.
Do I need to manage runner pools or controllers?
No. RunsOn eliminates pools, idle runners, and controller management. Each job gets its own fresh box resolved from your AWS account.
How do I enable faster caching?
Add extras=s3-cache to your job labels. This backs actions/cache with an S3 bucket in your account with no 10GB ceiling.
What operating systems and architectures does RunsOn support?
RunsOn supports Linux (x64, arm64), Windows, and GPU instances. It also supports nested virtualization (KVM for Linux, Hyper-V for Windows).
Tool Details
- Pricing
- Free
- Category
- Cloud Platforms
- Added
- Jul 2026
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