Softwr

Government · head to head

DemandStar vs Sigstore

DemandStar logo

DemandStar

Government

Bid distribution network that is free for government agencies and charges the suppliers instead

From
Free
Free plan
Yes
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

  • Each has a real cost: DemandStar coverage is opt-in by agency, so a supplier paying for a state tier receives only participating agencies and must still monitor other portals for the rest.; 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: DemandStar covers Free for agencies, Sigstore covers Fulcio.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which DemandStar and Sigstore actually diverge.

Attributes where DemandStar and Sigstore differ
AttributeDemandStarSigstore
Pricing modelFree for agencies, per year by geographic coverage for suppliersOpen source, public instance free to use
PlatformsWebWeb, Linux, macOS, Windows, Self-hosted
CategoryGovernmentCybersecurity

Identical on both: starting price (Free), free tier (Yes), 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 DemandStar

  • Free for agencies
  • Commodity code matching
  • eBidding
  • Plan holder lists
  • Supplier registration
  • Geographic subscription tiers

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.

DemandStar

  • A city purchasing officer who wants wider bid distribution without running a procurement to buy softwarenot Sigstore
  • A contractor who works in three adjacent counties and wants notifications only for that footprintnot Sigstore
  • An agency needing sealed electronic bid submission to replace paper deliveries to the clerknot Sigstore
  • A supplier testing whether public sector work is viable before committing to a national subscriptionnot Sigstore

Sigstore

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

Where each one falls short

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

DemandStar

  • Coverage is opt-in by agency, so a supplier paying for a state tier receives only participating agencies and must still monitor other portals for the rest.
  • The free supplier tier charges around 5 US dollars per bid document download, which turns an apparently free plan into a metered one as soon as you actually pursue opportunities.
  • State pricing ranges from roughly 100 to 1,499 US dollars with the variation driven by agency density, so suppliers cannot predict cost from geography alone.
  • Because agencies pay nothing, they have little leverage over the roadmap and features are driven by what makes supplier subscriptions sell.
  • The brand is being folded into Euna OpenBid following the Euna Solutions consolidation, so suppliers and agencies should expect the name and portal to change.

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

DemandStar

Free
  • Government agencyFree
    • Post unlimited solicitations
    • Access the supplier network
    • eBidding and plan holder lists
  • Supplier freeFree
    • Bid notifications for one agency of your choice
    • Bid document downloads charged around 5 USD each
    • Supplier profile and registration
  • Supplier county$60/year
    • All participating agencies within one county
    • Unlimited bid document access for that county
    • Approximate rate, varies by county
  • Supplier state$100/year
    • All participating agencies within one state
    • Priced from around 100 to 1,499 USD depending on agency density

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 DemandStar if

  • You need free for agencies.
  • You want to start without paying.
  • You also want commodity code matching.
DemandStar 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 DemandStar or Sigstore better?
Neither clearly leads. DemandStar starts at Free and Sigstore at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, DemandStar or Sigstore?
DemandStar starts at Free and Sigstore at Free.
Does DemandStar or Sigstore run on more platforms?
DemandStar runs on Web. Sigstore runs on Web, Linux, macOS, Windows, Self-hosted.
Can I use DemandStar for free?
Both have a free tier, so you can try either at no cost before committing.
What is DemandStar best used for?
DemandStar is most often used for a city purchasing officer who wants wider bid distribution without running a procurement to buy software, a contractor who works in three adjacent counties and wants notifications only for that footprint, an agency needing sealed electronic bid submission to replace paper deliveries to the clerk, a supplier testing whether public sector work is viable before committing to a national subscription. Of those, a city purchasing officer who wants wider bid distribution without running a procurement to buy software and a contractor who works in three adjacent counties and wants notifications only for that footprint are not what Sigstore is typically brought in for.
What can DemandStar do that Sigstore cannot?
DemandStar covers Free for agencies, Commodity code matching, eBidding, Plan holder lists. Sigstore covers Fulcio, Rekor, Keyless signing, Multi-language clients.

Answered from the vendors’ own pages

DemandStar: Is DemandStar free for governments?

Yes, entirely. Agencies post solicitations and access the supplier network at no cost; suppliers fund the platform.

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.

DemandStar: What do suppliers pay?

Free for one agency with roughly 5 USD per document download, about 60 USD a year per county, 100 to 1,499 per state, and 2,699 for national coverage.

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.

DemandStar: Who owns DemandStar?

Euna Solutions, the public sector portfolio formerly known as GTY Technology, which also absorbed Bonfire and Ion Wave.

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.

DemandStar: Does it cover every agency?

No. Only agencies that have opted in, which is the main limitation for suppliers buying wide coverage.

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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