Developer Tools · head to head
Namespace vs Sigstore
Namespace
Developer Tools
The dev platform for the next 100 billion commits
- From
- Free
- Free plan
- Yes
Sigstore
Cybersecurity
Free public signing and transparency infrastructure for open source artifacts
- From
- Free
- Free plan
- Yes
The short version
- Each has a real cost: Namespace developer plan is pay-as-you-go only; minimum usage unclear; Sigstore the security model depends on somebody watching the log. The documentation states that compromise of an identity provider or of Fulcio itself is detectable only if third parties monitor the transparency log, the monitoring tool is a community-tier rather than core project, and almost no consumer runs one.
- They diverge on capability: Namespace covers Devboxes, Sigstore covers Fulcio.
- Prices and features above were last checked on 31 August 2026.
Where they differ
Only the attributes on which Namespace and Sigstore actually diverge.
Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Namespace
- Devboxes
- GitHub Actions runners
- Docker builds
- Cross-invocation caching
- NVMe storage
- High-speed networking
- Multiple OS support
- Bazel and Turborepo support
Only in Sigstore
- Fulcio
- Rekor
- Keyless signing
- Multi-language clients
- Timestamp authority
- Neutral governance
What people use each for
The jobs each tool is most often brought in to do.
Namespace
- Providing AI coding agents with cloud-based development environmentsnot Sigstore
- Accelerating CI builds with faster GitHub Actions runnersnot Sigstore
- Distributing builds across teams with managed infrastructurenot Sigstore
- Scaling development velocity for monorepo organizationsnot Sigstore
Sigstore
- Open source projects signing releases without running a certificate authoritynot Namespace
- Organisations meeting a signed-artifact requirement without buying a signing productnot Namespace
- Publishing provenance that a consumer can verify independently of younot Namespace
- Self-hosting the same components where a public log is unacceptablenot Namespace
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Namespace
- Developer plan is pay-as-you-go only; minimum usage unclear
- Team plan $100/mo is competitive but usage limits may be tight
- Devbox pricing separate at $0.004/minute could add up quickly
- Enterprise plan requires custom sales conversation
Sigstore
- The security model depends on somebody watching the log. The documentation states that compromise of an identity provider or of Fulcio itself is detectable only if third parties monitor the transparency log, the monitoring tool is a community-tier rather than core project, and almost no consumer runs one.
- It is a 99.5 percent objective with no service level agreement, which permits several hours of downtime a month and offers no remedy. A pipeline that signs on every build has taken a hard dependency on a free service with no contract behind it.
- Log scale is a live engineering problem rather than a theoretical one. The active shard holds billions of entries, the log has already been sharded twice, and sharding version 1 requires stopping traffic, which is why a replacement was built.
- Ten-minute certificates make trust depend on log availability. Verifying an older signature relies on the log entry proving it was made inside that window, so a lost or unreachable entry can render a valid artifact unverifiable.
- Migration debt is substantial and ongoing. Version 2 of the log is generally available but not the public default, the signing client has an announced breaking release ahead, some official clients lag the new log format, and a post-quantum migration is named as the next break after that.
Pricing, plan by plan
Namespace
Free- DeveloperFree
- Pay-as-you-go
- On-demand compute
- Docker builds
- Team$100/month
- 100,000 unit minutes
- 1,000 Docker builds
- Everything in Developer
- Business$250/month
- 250,000 unit minutes
- 2,500 Docker builds
- Everything in Team
- Enterprise$undefined/custom
- Custom compute/Docker build limits
- Audit log export
- Enterprise SSO
Sigstore
Free- Public good instanceFree
- Free to everyone with no contract
- 99.5 percent availability objective, not an agreement
- 100KB cap per attestation upload
- Self-hostedFree
- Apache-2.0
- Run your own Fulcio and Rekor
- Rekor v2 available for self-hosters
Which should you pick?
Choose Namespace if
- You need devboxes.
- You want to start without paying.
- You work on Cloud, Mac, Windows, Linux.
- You also want github actions runners.
Choose Sigstore if
- You need fulcio.
- You want to start without paying.
- You work on Web, Linux, macOS, Windows, Self-hosted.
- You also want rekor.
Questions people ask
- Is Namespace or Sigstore better?
- Neither clearly leads. Namespace starts at Free and Sigstore at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Namespace or Sigstore?
- Namespace starts at Free and Sigstore at Free.
- Does Namespace or Sigstore run on more platforms?
- Namespace runs on Cloud, Mac, Windows, Linux. Sigstore runs on Web, Linux, macOS, Windows, Self-hosted.
- Can I use Namespace for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is Namespace best used for?
- Namespace is most often used for providing ai coding agents with cloud-based development environments, accelerating ci builds with faster github actions runners, distributing builds across teams with managed infrastructure, scaling development velocity for monorepo organizations. Of those, providing ai coding agents with cloud-based development environments and accelerating ci builds with faster github actions runners are not what Sigstore is typically brought in for.
- What can Namespace do that Sigstore cannot?
- Namespace covers Devboxes, GitHub Actions runners, Docker builds, Cross-invocation caching. Sigstore covers Fulcio, Rekor, Keyless signing, Multi-language clients.
Answered from the vendors’ own pages
Namespace: How is compute usage metered on the Developer plan?
Developer plan uses pay-as-you-go billing. Devboxes bill at $0.004 per minute. Storage and caching services have separate usage-based fees. A 30-day free trial is available to test usage patterns.
SourceSigstore: Is the public instance really free?
Yes, with no contract and no paid tier. That is also the weakness: a 99.5 percent objective with no agreement, no remedy and support through Slack.
Namespace: What is the difference between Team and Business plans?
Team ($100/mo) includes 100,000 unit minutes and 1,000 Docker builds with email support. Business ($250/mo) includes 250,000 unit minutes, 2,500 Docker builds, and high concurrency with a dedicated Slack channel.
SourceSigstore: Has the public log moved to Rekor v2?
No. Version 2 reached general availability in October 2025 and self-hosters can use it, but the public instance still defaults to version 1 and the project has said it will for the foreseeable future.
Namespace: Can Namespace support AI coding agents?
Yes, Namespace Devboxes are specifically designed as feature-rich development environments for AI coding agents, with full tooling and performance optimization.
SourceSigstore: Does Sigstore make my dependencies safe?
No, and this is a category error worth avoiding. It tells you who published something. It has no knowledge of what the artifact contains or whether it is vulnerable.
Sigstore: What are the rate limits?
Not published. Only the 100KB cap per attestation upload is documented, so do not design a high-volume pipeline around assumed throughput.
Sigstore: Should we self-host it?
If a public record of every signature is unacceptable, or if a free service with no agreement cannot sit in your build path, then yes. Otherwise the public instance is what most projects use.
Related pages
Other head to heads
- Namespace vs Ona (formerly Gitpod)
- Namespace vs CodeSandbox
- Namespace vs WarpBuild
- Namespace vs Depot
- Namespace vs Blacksmith
- Namespace vs Earthly
- Namespace vs Daytona
- Namespace vs Ansible
- Namespace vs Garden
- Namespace vs ConfigCat
- Namespace vs Nix
- Namespace vs OpsLevel
- Namespace vs StackBlitz
- Namespace vs Steampipe
- Namespace vs Tilt
- Namespace vs Webpack
- Namespace vs Avo
- Namespace vs Cosign
- Namespace vs Syft
- Namespace vs Logto
- Namespace vs Infisical
- Namespace vs Chainguard
- Namespace vs Ory
- Namespace vs OWASP ZAP
- Namespace vs Bitwarden
- Namespace vs Semgrep
- Namespace vs Trivy
- Namespace vs authentik
- Namespace vs Authelia
- Namespace vs Resolver
- Namespace vs Saviynt
- Namespace vs Securiti
- Namespace vs Speakeasy
- Namespace vs Sysdig
- Namespace vs Tenable
- Sigstore vs Ona (formerly Gitpod)
- Sigstore vs CodeSandbox
- Sigstore vs WarpBuild
- Sigstore vs Depot
- Sigstore vs Blacksmith
- Sigstore vs Earthly
- Sigstore vs Daytona
- Sigstore vs Ansible
- Sigstore vs Garden
- Sigstore vs ConfigCat
- Sigstore vs Nix
- Sigstore vs OpsLevel
- Sigstore vs StackBlitz
- Sigstore vs Steampipe
- Sigstore vs Tilt
- Sigstore vs Webpack
- Sigstore vs Avo
- Sigstore vs Cosign
- Sigstore vs Syft
- Sigstore vs Logto
- Sigstore vs Infisical
- Sigstore vs Chainguard
- Sigstore vs Ory
- Sigstore vs OWASP ZAP
- Sigstore vs Bitwarden
- Sigstore vs Semgrep
- Sigstore vs Trivy
- Sigstore vs authentik
- Sigstore vs Authelia
- Sigstore vs Resolver
- Sigstore vs Saviynt
- Sigstore vs Securiti
- Sigstore vs Speakeasy
- Sigstore vs Sysdig
- Sigstore vs Tenable