Alternatives
Namespace alternatives
Ephemeral compute for CI and development: drop-in GitHub runners alongside devboxes, sandboxes and ephemeral Kubernetes clusters, with Bazel remote execution and egress filtering.
What Namespace does well
- Goes far beyond CI — devboxes, sandboxes and ephemeral clusters in one platform
- Serious Bazel support including remote execution and build observability
- Egress policy and audit logging are first-class, not add-ons
- Credible engineering customers including Zed, DuckDB and Framer
Where we differ
- Platform breadth means CI is one product among many, not the whole focus
- 221 of their 300 indexed pages are docs — little help while you are still evaluating
- Nearly half their blog is changelog entries rather than durable guidance
| Namespace | runnerhut | |
|---|---|---|
| EU data residency | Yes, per workspace | Yes, all plans |
| Drop-in runs-on | Yes | Yes |
| Cache volumes | Yes | Yes |
| Devboxes / sandboxes | Yes | Not offered |
| Bazel remote execution | Yes | Remote cache only |
| Egress filtering | Yes | Yes |
| Focus | Broad compute platform | GitHub Actions CI |
| Setup surface | Moderate | One line |
Other options worth evaluating
- GitHub-hosted runners — The default runners built into GitHub Actions. Zero setup, billed per minute against your GitHub plan, with larger runners and native arm64 available on paid tiers.
- Blacksmith — A YC-backed managed runner platform positioned as a drop-in GitHub Actions replacement, advertising up to 2× faster CI with faster caching and lower cost. Raised a Series B led by Peak XV and is SOC 2 Type 2 compliant.
- WarpBuild — A hosted runner platform offering Linux, macOS and Windows runners plus bring-your-own-cloud deployments on AWS, GCP and Azure. Advertises roughly 2× faster builds at about half the cost of GitHub-hosted runners.
- Ubicloud — An open-source cloud that runs managed GitHub Actions runners alongside managed Postgres and Kubernetes, competing primarily on price-performance and on being open and portable.
- BuildJet — A managed performance-runner service for GitHub Actions that shut down on 31 March 2026. Its migration guidance pointed customers back to GitHub-hosted runners.
- Depot — Best known for accelerated remote Docker builds, with GitHub Actions runners added alongside. Strongest when container image build time dominates your pipeline.
- Actions Runner Controller (ARC) — The open-source Kubernetes operator for self-hosted GitHub Actions runners. Free software, but you operate the cluster, the autoscaling, the images and the caching yourself.
Your next build could be twice as fast, at half the price
Start free. Migrating away is the same one line, and we publish that diff too.
Related
GitHub-hosted runnersThe default runners built into GitHub Actions. Zero setup, billed per minute against your GitHub plan, with larger runners and native arm64 available on paid tiers.BlacksmithA YC-backed managed runner platform positioned as a drop-in GitHub Actions replacement, advertising up to 2× faster CI with faster caching and lower cost. Raised a Series B led by Peak XV and is SOC 2 Type 2 compliant.WarpBuildA hosted runner platform offering Linux, macOS and Windows runners plus bring-your-own-cloud deployments on AWS, GCP and Azure. Advertises roughly 2× faster builds at about half the cost of GitHub-hosted runners.UbicloudAn open-source cloud that runs managed GitHub Actions runners alongside managed Postgres and Kubernetes, competing primarily on price-performance and on being open and portable.