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Cybersecurity · head to head

Fenergo vs Sigstore

Fenergo logo

Fenergo

Cybersecurity

Client lifecycle management and KYC onboarding for regulated financial institutions

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: Fenergo implementations commonly run twelve to twenty-four months and depend on a systems integrator, so the services cost frequently exceeds the software subscription in year one.; 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: Fenergo covers Regulatory rules library, Sigstore covers Fulcio.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Fenergo and Sigstore actually diverge.

Attributes where Fenergo and Sigstore differ
AttributeFenergoSigstore
Starting priceOn requestFree
Pricing modelquoteOpen source, public instance free to use
Free tierNoYes
PlatformsWebWeb, 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 Fenergo

  • Regulatory rules library
  • Digital onboarding
  • Perpetual KYC
  • Entity data model
  • Screening orchestration
  • Case management

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.

Fenergo

  • A bank operating in twenty jurisdictions that cannot keep local KYC requirements current across separate regional teamsnot Sigstore
  • A custodian moving from calendar-based periodic review to event-driven perpetual KYC to cut analyst headcountnot Sigstore
  • An asset manager onboarding funds and trusts where the ownership hierarchy defeats generic identity verification toolsnot Sigstore
  • A payments institution facing a regulatory remediation order and needing a defensible audit trail of every client reviewnot Sigstore

Sigstore

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

Where each one falls short

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

Fenergo

  • Implementations commonly run twelve to twenty-four months and depend on a systems integrator, so the services cost frequently exceeds the software subscription in year one.
  • It orchestrates screening but does not supply the sanctions, PEP or adverse media data, so you still buy Dow Jones, LexisNexis or World-Check separately and those fees are per screened entity.
  • The entry price is set for institutions with large onboarding volumes, which puts it out of reach of smaller banks and fintechs that would otherwise benefit from the rules library.
  • Configuration is deep and specific, which makes upgrades between major versions a project rather than a patch, and some customers stay on old releases for years.
  • The rules library covers regulatory requirements, not your internal risk appetite, so the policy tuning that determines whether onboarding actually gets faster remains your work.

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

Fenergo

On request
  • Fenergo Client Lifecycle Management$undefined/year
    • Priced by institution size, jurisdictions in scope and modules licensed
    • Regulatory rules content subscription bundled into the annual fee
    • Implementation delivered by Fenergo or a systems integrator and quoted 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 Fenergo if

  • You need regulatory rules library.
  • You also want digital onboarding.
Fenergo 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 Fenergo or Sigstore better?
Neither clearly leads. Fenergo 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, Fenergo or Sigstore?
Sigstore has a free tier; the other does not. Paid plans start at On request for Fenergo and Free for Sigstore.
Does Fenergo or Sigstore run on more platforms?
Fenergo runs on Web. 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. Fenergo starts at On request.
What is Fenergo best used for?
Fenergo is most often used for a bank operating in twenty jurisdictions that cannot keep local kyc requirements current across separate regional teams, a custodian moving from calendar-based periodic review to event-driven perpetual kyc to cut analyst headcount, an asset manager onboarding funds and trusts where the ownership hierarchy defeats generic identity verification tools, a payments institution facing a regulatory remediation order and needing a defensible audit trail of every client review. Of those, a bank operating in twenty jurisdictions that cannot keep local kyc requirements current across separate regional teams and a custodian moving from calendar-based periodic review to event-driven perpetual kyc to cut analyst headcount are not what Sigstore is typically brought in for.
What can Fenergo do that Sigstore cannot?
Fenergo covers Regulatory rules library, Digital onboarding, Perpetual KYC, Entity data model. Sigstore covers Fulcio, Rekor, Keyless signing, Multi-language clients.

Answered from the vendors’ own pages

Fenergo: Does Fenergo do the sanctions screening itself?

No. It orchestrates calls to third-party data providers such as Dow Jones and World-Check, and those subscriptions are additional and usually charged per screened entity.

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.

Fenergo: Is it SaaS or on-premises?

Both. The SaaS offering runs on Microsoft Azure with regional deployment options, which matters where data residency rules prohibit client data leaving the jurisdiction.

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.

Fenergo: How long does a deployment take?

Plan for a year at minimum for a multi-jurisdiction rollout. Single-jurisdiction deployments with a narrow product set can be shorter but rarely under six months.

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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