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Government · head to head

PublicInput vs Sigstore

PublicInput logo

PublicInput

Government

Inclusive Community Engagement

From
$400/month
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: PublicInput all three plans, Listen, Engage and Engage Plus, are listed as Request Pricing with no published rate, minimum or cost driver; 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: PublicInput covers Virtual Public Meetings, Sigstore covers Fulcio.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which PublicInput and Sigstore actually diverge.

Attributes where PublicInput and Sigstore differ
AttributePublicInputSigstore
Starting price$400/monthFree
Pricing modelsubscriptionOpen source, public instance free to use
Free tierNoYes
PlatformsWeb, Ios, AndroidWeb, Linux, macOS, Windows, Self-hosted
CategoryGovernmentCybersecurity
Founded2014Unknown

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 PublicInput

  • Virtual Public Meetings
  • Online Surveys
  • Comment Management
  • Multi-language Support
  • Engagement Analytics
  • Zoom
  • Microsoft Teams
  • GovDelivery

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.

PublicInput

  • Civic engagementnot Sigstore
  • Government consultationnot Sigstore
  • Public input collectionnot Sigstore

Sigstore

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

Where each one falls short

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

PublicInput

  • All three plans, Listen, Engage and Engage Plus, are listed as Request Pricing with no published rate, minimum or cost driver
  • HTML and CSS customization, custom workflows and approvals, and external system integration with Accela and ESRI are listed as Enterprise Capabilities rather than core platform features
  • Public meetings functionality is sold under a separate Meetings plan rather than being included with the Engagement plans
  • Getting a plan requires booking a consultation and a tailored demo rather than self serve signup

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

PublicInput

$400/month
  • Enterprise$400/month
    • Virtual Meetings
    • Surveys
    • Comment Management

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 PublicInput if

  • You need virtual public meetings.
  • You work on Web, Ios, Android.
  • You also want online surveys.
PublicInput 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 PublicInput or Sigstore better?
Neither clearly leads. PublicInput starts at $400/month and Sigstore at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, PublicInput or Sigstore?
Sigstore has a free tier; the other does not. Paid plans start at $400/month for PublicInput and Free for Sigstore.
Does PublicInput or Sigstore run on more platforms?
PublicInput runs on Web, Ios, Android. 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. PublicInput starts at $400/month.
What is PublicInput best used for?
PublicInput is most often used for civic engagement, government consultation, public input collection. Of those, civic engagement and government consultation are not what Sigstore is typically brought in for.
What can PublicInput do that Sigstore cannot?
PublicInput covers Virtual Public Meetings, Online Surveys, Comment Management, Multi-language Support. Sigstore covers Fulcio, Rekor, Keyless signing, Multi-language clients.

Answered from the vendors’ own pages

PublicInput: How much does PublicInput cost?

PublicInput does not publish pricing on their website. Customers must request a demo or book a meeting to receive a quote based on their specific needs.

Source
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.

PublicInput: What pricing plans does PublicInput offer?

PublicInput offers Engagement Plans and Meetings Plans, but specific pricing for each plan is not publicly available and requires contacting their sales team.

Source
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.

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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