Developer Tools · head to head
Moonrepo vs Semperis
Moonrepo
Developer Tools
Monorepo build system and version manager platform
- From
- Free
- Free plan
- Yes
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
The short version
- Only Moonrepo has a free tier, so it costs nothing to try first.
- Each has a real cost: Moonrepo smaller community compared to established build systems like Bazel; 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: Moonrepo covers Task orchestration, 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 Moonrepo and Semperis actually diverge.
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 Moonrepo
- Task orchestration
- Smart hashing
- Dependency analysis
- Multi-language version management
- Contextual detection
- Integrated development environment
- Git integration
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.
Moonrepo
- Managing multiple language projects in a single repositorynot Semperis
- Automating developer environment setup with consistent toolchain versionsnot Semperis
- Optimizing monorepo builds with intelligent task cachingnot Semperis
- Enforcing consistent development practices across distributed teamsnot 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 Moonrepo
- Post-incident recovery where domain controllers are compromised and restoring from system-state backup would reintroduce the attacker's footholdnot Moonrepo
- Continuous detection of privileged group changes and directory-level tampering that domain controller security logs missnot Moonrepo
- Hybrid estates where AD, Entra ID and Okta all matter and no single tool currently shows changes across the threenot Moonrepo
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Moonrepo
- Smaller community compared to established build systems like Bazel
- Limited integrations with enterprise CI/CD platforms
- Documentation gaps in some advanced use cases
- No commercial support option for organizations requiring guaranteed SLAs
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
Moonrepo
FreeNo published plan breakdown. See the Moonrepo review.
Semperis
On requestNo published plan breakdown. See the Semperis review.
Which should you pick?
Choose Moonrepo if
- You need task orchestration.
- You want to start without paying.
- You work on Web, CLI.
- You also want smart hashing.
Choose Semperis if
- You need active directory forest recovery.
- You also want malware-free restore.
Questions people ask
- Is Moonrepo or Semperis better?
- Neither clearly leads. Moonrepo 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, Moonrepo or Semperis?
- Moonrepo has a free tier; the other does not. Paid plans start at Free for Moonrepo and On request for Semperis.
- Does Moonrepo or Semperis run on more platforms?
- Moonrepo runs on Web, CLI. Semperis runs on Web.
- Can I use Moonrepo for free?
- Yes. Moonrepo has a free tier, so you can try it without paying. Semperis starts at On request.
- What is Moonrepo best used for?
- Moonrepo is most often used for managing multiple language projects in a single repository, automating developer environment setup with consistent toolchain versions, optimizing monorepo builds with intelligent task caching, enforcing consistent development practices across distributed teams. Of those, managing multiple language projects in a single repository and automating developer environment setup with consistent toolchain versions are not what Semperis is typically brought in for.
- What can Moonrepo do that Semperis cannot?
- Moonrepo covers Task orchestration, Smart hashing, Dependency analysis, Multi-language version management. Semperis covers Active Directory Forest Recovery, Malware-free restore, Replication-stream monitoring, Automated rollback.
Answered from the vendors’ own pages
Moonrepo: What programming languages does Moonrepo support?
Moonrepo's proto version manager supports Node.js, Python, Go, Rust, Deno, Java, Ruby, and other languages, with the build system moon supporting most modern development stacks.
SourceSemperis: 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.
Moonrepo: Is Moonrepo suitable for large monorepos?
Yes, Moonrepo is designed to scale to monorepos of any size with intelligent caching and task orchestration to maintain build performance.
SourceSemperis: 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.
Moonrepo: Can I use just moon or just proto separately?
Yes, moon and proto are independent tools that can be adopted separately or together to address specific team needs.
SourceSemperis: 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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