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Cybersecurity · head to head

One Identity vs Sigstore

One Identity logo

One Identity

Cybersecurity

Quest-owned identity governance, PAM and Active Directory management

From
On request
Rated
-
Full reviewWebsite
Sigstore logo

Sigstore

Cybersecurity

Free public signing and transparency infrastructure for open source artifacts

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Sigstore has a free tier, so it costs nothing to try first.
  • Each has a real cost: One Identity the portfolio is assembled from separate acquisitions, so components are separately licensed, separately administered and do not present one console, which raises operational cost.; 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: One Identity covers Identity Manager, Sigstore covers Fulcio.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which One Identity and Sigstore actually diverge.

Attributes where One Identity and Sigstore differ
AttributeOne IdentitySigstore
Starting priceOn requestFree
Pricing modelquoteOpen source, public instance free to use
Free tierNoYes
PlatformsWeb, Windows, LinuxWeb, Linux, macOS, Windows, Self-hosted

Identical on both: user rating (Not yet rated), category (Cybersecurity).

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 One Identity

  • Identity Manager
  • Safeguard
  • Active Roles
  • OneLogin
  • Password Manager
  • syslog-ng
  • Starling connectors

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.

One Identity

  • An organisation whose authoritative directory will remain on premises Active Directory and needs delegated administration with attribute-level controlnot Sigstore
  • A government or defence environment requiring privileged session management on a hardened physical appliance rather than a cloud servicenot Sigstore
  • A manufacturer with SAP and Active Directory needing provisioning governed under one certification processnot Sigstore
  • An enterprise consolidating Active Directory after an acquisition and needing automated account lifecycle across both forestsnot Sigstore

Sigstore

  • Open source projects signing releases without running a certificate authoritynot One Identity
  • Organisations meeting a signed-artifact requirement without buying a signing productnot One Identity
  • Publishing provenance that a consumer can verify independently of younot One Identity
  • Self-hosting the same components where a public log is unacceptablenot One Identity

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

One Identity

  • The portfolio is assembled from separate acquisitions, so components are separately licensed, separately administered and do not present one console, which raises operational cost.
  • Identity Manager implementations are customisation-heavy and commonly run over a year, with the services spend exceeding the licence cost in the first year.
  • Quest has changed private equity ownership more than once since the Dell separation, and buyers should ask directly about product investment commitments before signing a multi-year deal.
  • Product documentation and support sit behind a customer portal, which makes independent evaluation before purchase harder than with vendors that publish openly.
  • The cloud-native and developer experience trails the pure-play identity vendors, so organisations moving decisively to SaaS applications find the on premises heritage becomes a constraint rather than an asset.

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

One Identity

On request
  • Identity Manager$undefined/year
    • Priced per managed identity
    • On premises or hosted
    • Access certification and provisioning
  • Safeguard$undefined/year
    • Priced per privileged user or per appliance
    • Hardened appliance option for session management
    • Licensed separately from Identity Manager
  • Active Roles$undefined/year
    • Priced per managed Active Directory account
    • Delegated administration and automated provisioning
    • Licensed separately

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 One Identity if

  • You need identity manager.
  • You work on Web, Windows, Linux.
  • You also want safeguard.
One Identity review

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.
Sigstore review

Questions people ask

Is One Identity or Sigstore better?
Neither clearly leads. One Identity starts at On request and Sigstore at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, One Identity or Sigstore?
Sigstore has a free tier; the other does not. Paid plans start at On request for One Identity and Free for Sigstore.
Does One Identity or Sigstore run on more platforms?
One Identity runs on Web, Windows, Linux. Sigstore runs on Web, Linux, macOS, Windows, Self-hosted.
Can I use Sigstore for free?
Yes. Sigstore has a free tier, so you can try it without paying. One Identity starts at On request.
What is One Identity best used for?
One Identity is most often used for an organisation whose authoritative directory will remain on premises active directory and needs delegated administration with attribute-level control, a government or defence environment requiring privileged session management on a hardened physical appliance rather than a cloud service, a manufacturer with sap and active directory needing provisioning governed under one certification process, an enterprise consolidating active directory after an acquisition and needing automated account lifecycle across both forests. Of those, an organisation whose authoritative directory will remain on premises active directory and needs delegated administration with attribute-level control and a government or defence environment requiring privileged session management on a hardened physical appliance rather than a cloud service are not what Sigstore is typically brought in for.
What can One Identity do that Sigstore cannot?
One Identity covers Identity Manager, Safeguard, Active Roles, OneLogin. Sigstore covers Fulcio, Rekor, Keyless signing, Multi-language clients.

Answered from the vendors’ own pages

One Identity: Is One Identity the same company as Quest?

Yes. One Identity is Quest Software's identity and access management business unit, not a separate vendor.

Sigstore: 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.

One Identity: Does it include privileged access?

Safeguard provides it, but it is licensed separately from Identity Manager. Neither includes the other.

Sigstore: 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.

One Identity: Why choose this over SailPoint or Saviynt?

Almost always because of Active Directory depth via Active Roles or an appliance requirement for privileged sessions. For cloud-first estates the specialists are the stronger choice.

Sigstore: 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.

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