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Developer Tools · head to head

Namespace vs Semperis

Namespace logo

Namespace

Developer Tools

The dev platform for the next 100 billion commits

From
Free
Free plan
Yes
Full reviewWebsite
Semperis logo

Semperis

Cybersecurity

Identity threat detection and Active Directory forest recovery for AD, Entra ID and Okta, from a privately held US vendor.

From
On request
Free plan
No
Full reviewWebsite

The short version

  • Only Namespace has a free tier, so it costs nothing to try first.
  • Each has a real cost: Namespace developer plan is pay-as-you-go only; minimum usage unclear; Semperis scope is limited to Active Directory, Entra ID and Okta, so an organisation whose critical identity lives elsewhere gets little from it, and the recovery value declines in direct proportion to how much has already moved off on-premises AD.
  • They diverge on capability: Namespace covers Devboxes, Semperis covers Active Directory Forest Recovery.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Namespace and Semperis actually diverge.

Attributes where Namespace and Semperis differ
AttributeNamespaceSemperis
Starting priceFreeOn request
Pricing modelUnknownquote
Free tierYesNo
PlatformsCloud, Mac, Windows, LinuxWeb
CategoryDeveloper ToolsCybersecurity

Identical on both: 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 Semperis

  • Active Directory Forest Recovery
  • Malware-free restore
  • Replication-stream monitoring
  • Automated rollback
  • Attack indicator scoring
  • Entra ID and Okta coverage
  • Purple Knight
  • Forest Druid

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 Semperis
  • Accelerating CI builds with faster GitHub Actions runnersnot Semperis
  • Distributing builds across teams with managed infrastructurenot Semperis
  • Scaling development velocity for monorepo organizationsnot Semperis

Semperis

  • An organisation that cannot answer an auditor or insurer asking how long it would take to rebuild Active Directory after a destructive attacknot Namespace
  • Post-incident recovery where domain controllers are compromised and restoring from system-state backup would reintroduce the attacker's footholdnot Namespace
  • Continuous detection of privileged group changes and directory-level tampering that domain controller security logs missnot Namespace
  • Hybrid estates where AD, Entra ID and Okta all matter and no single tool currently shows changes across the threenot 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

Semperis

  • Scope is limited to Active Directory, Entra ID and Okta, so an organisation whose critical identity lives elsewhere gets little from it, and the recovery value declines in direct proportion to how much has already moved off on-premises AD.
  • The licence buys tooling, not a proven runbook: forest recovery is only worth what your last rehearsal demonstrated, and a plan that has never been executed end to end in a lab is an untested assumption regardless of what was purchased.
  • It overlaps with backup and directory management products from Quest, Veeam, Commvault and others, so the buyer must argue internally why a dedicated product is needed alongside a backup contract that already claims to protect Active Directory.
  • Running Directory Services Protector well requires someone who understands AD internals, replication metadata and Tier 0 attack paths, and without that person the alerts on privileged changes are either ignored or auto-reverted in ways that break legitimate administration.
  • Licensing is driven by identity object counts, so directories carrying years of stale user accounts and service principals pay for objects that should have been deleted, and the cleanup project that would reduce the bill is the one nobody has time for.

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

Semperis

On request

No published plan breakdown. See the Semperis review.

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.
Namespace review

Choose Semperis if

  • You need active directory forest recovery.
  • You also want malware-free restore.
Semperis review

Questions people ask

Is Namespace or Semperis better?
Neither clearly leads. Namespace starts at Free and Semperis at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Namespace or Semperis?
Namespace has a free tier; the other does not. Paid plans start at Free for Namespace and On request for Semperis.
Does Namespace or Semperis run on more platforms?
Namespace runs on Cloud, Mac, Windows, Linux. Semperis runs on Web.
Can I use Namespace for free?
Yes. Namespace has a free tier, so you can try it without paying. Semperis starts at On request.
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 Semperis is typically brought in for.
What can Namespace do that Semperis cannot?
Namespace covers Devboxes, GitHub Actions runners, Docker builds, Cross-invocation caching. Semperis covers Active Directory Forest Recovery, Malware-free restore, Replication-stream monitoring, Automated rollback.

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.

Source
Semperis: Does this replace my backups?

No. It replaces the Active Directory recovery procedure specifically. You still need backups for everything else, and the point of Semperis is that a generic system-state backup of a domain controller is a poor way to recover a forest because it restores the operating system along with whatever compromised it.

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.

Source
Semperis: Is it useful if we are cloud-only on Entra ID?

Partly. Directory Services Protector covers Entra ID and Okta for change tracking and posture, but the forest recovery product, which is the strongest reason to buy, applies to on-premises Active Directory. A genuinely cloud-only organisation should weigh it against Microsoft's own tooling.

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.

Source
Semperis: Are Purple Knight and Forest Druid really free?

Yes, both are free downloads with no licence requirement, and they are widely used by organisations that are not Semperis customers. They are also, transparently, the top of the sales funnel.

Semperis: How long does forest recovery actually take?

The honest answer is whatever your rehearsal took. The vendor's case is hours instead of days, and automation genuinely removes most manual steps, but the number that matters for your board is the one from a test in your own environment.

Semperis: Does it require agents on domain controllers?

It collects directory changes from the AD replication stream, which is what lets it see changes that bypass the security log. Deployment details vary by product and version, so confirm the exact architecture against your domain controller change-control rules.

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