Softwr

Government · head to head

Bonfire vs Sigstore

Bonfire logo

Bonfire

Government

Public sector sourcing and bid evaluation software with scored, auditable award decisions

From
On request
Free plan
No
Full reviewWebsite
Sigstore logo

Sigstore

Cybersecurity

Free public signing and transparency infrastructure for open source artifacts

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Only Sigstore has a free tier, so it costs nothing to try first.
  • Each has a real cost: Bonfire it is a sourcing and evaluation tool rather than full procure to pay, so requisitions, purchase orders and invoicing stay in the finance system and the join between them is the agency's problem.; 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: Bonfire covers Solicitation posting, Sigstore covers Fulcio.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Bonfire and Sigstore actually diverge.

Attributes where Bonfire and Sigstore differ
AttributeBonfireSigstore
Starting priceOn requestFree
Pricing modelquoteOpen source, public instance free to use
Free tierNoYes
PlatformsWebWeb, Linux, macOS, Windows, Self-hosted
CategoryGovernmentCybersecurity

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 Bonfire

  • Solicitation posting
  • Sealed submission intake
  • Scored evaluation workspace
  • Audit trail
  • Supplier portal
  • Requirement matrices

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.

Bonfire

  • An agency that has lost or nearly lost a bid protest and needs a defensible evaluation recordnot Sigstore
  • A procurement team running scoring committees currently held together by spreadsheets and emailnot Sigstore
  • A university or health system applying public procurement rules without a public procurement systemnot Sigstore
  • An agency wanting suppliers to self register and receive addenda automatically rather than by mailing listnot Sigstore

Sigstore

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

Where each one falls short

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

Bonfire

  • It is a sourcing and evaluation tool rather than full procure to pay, so requisitions, purchase orders and invoicing stay in the finance system and the join between them is the agency's problem.
  • Since the acquisition path from GTY to GI Partners to Euna Solutions, Bonfire sits in a portfolio alongside products it once competed with, which narrows a shortlist that appears independent.
  • Suppliers must register on the portal to bid, and small local vendors reliably complain about the extra account, which can reduce responses on low value solicitations.
  • Pricing is quoted rather than published and scales with solicitation volume, so an agency with a few very large procurements pays a model designed around throughput.
  • Contract management after award is thin compared with dedicated contract lifecycle products, so agencies often buy a second system for the obligations the award created.

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

Bonfire

On request
  • Bonfire$undefined/year
    • Quoted by agency size and annual solicitation volume
    • Supplier side registration is free, which is how the vendor network grows
    • Implementation and training quoted separately from subscription

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 Bonfire if

  • You need solicitation posting.
  • You also want sealed submission intake.
Bonfire 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 Bonfire or Sigstore better?
Neither clearly leads. Bonfire 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, Bonfire or Sigstore?
Sigstore has a free tier; the other does not. Paid plans start at On request for Bonfire and Free for Sigstore.
Does Bonfire or Sigstore run on more platforms?
Bonfire 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. Bonfire starts at On request.
What is Bonfire best used for?
Bonfire is most often used for an agency that has lost or nearly lost a bid protest and needs a defensible evaluation record, a procurement team running scoring committees currently held together by spreadsheets and email, a university or health system applying public procurement rules without a public procurement system, an agency wanting suppliers to self register and receive addenda automatically rather than by mailing list. Of those, an agency that has lost or nearly lost a bid protest and needs a defensible evaluation record and a procurement team running scoring committees currently held together by spreadsheets and email are not what Sigstore is typically brought in for.
What can Bonfire do that Sigstore cannot?
Bonfire covers Solicitation posting, Sealed submission intake, Scored evaluation workspace, Audit trail. Sigstore covers Fulcio, Rekor, Keyless signing, Multi-language clients.

Answered from the vendors’ own pages

Bonfire: Who owns Bonfire?

Euna Solutions. Bonfire was acquired by GTY Technology in 2019, GTY was taken private by GI Partners in 2022, and the portfolio was rebranded Euna Solutions in 2023.

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.

Bonfire: Is it full procure to pay?

No. It covers sourcing and evaluation through award. Purchase orders and invoicing remain in the finance system.

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.

Bonfire: What is the real value?

A defensible, time stamped evaluation record when an award is protested, which is the expensive failure mode in public procurement.

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.

Bonfire: Can we see what other agencies pay?

Yes. These contracts are public records. Read several comparable awards before negotiating.

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.

Share

Related pages

More on Bonfire

More on Sigstore

Keep looking

Other head to heads