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Cybersecurity · head to head

Avast One vs Sigstore

Avast One logo

Avast One

Cybersecurity

All-in-one protection for your digital life

From
Free
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

  • Each has a real cost: Avast One ransomware and Wi-Fi vulnerability protection only on paid plans; 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: Avast One covers Antivirus, Sigstore covers Fulcio.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

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

Attributes where Avast One and Sigstore differ
AttributeAvast OneSigstore
Pricing modelUnknownOpen source, public instance free to use
PlatformsWindows, macOS, iOS, AndroidWeb, Linux, macOS, Windows, Self-hosted
Founded1988Unknown

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

  • Antivirus
  • Firewall
  • VPN
  • Data breach monitoring
  • Email Guardian
  • Webcam Shield
  • Ransomware Shield
  • Performance optimization

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.

Avast One

  • Antivirusnot Sigstore
  • Internet Securitynot Sigstore
  • Privacy Toolsnot Sigstore

Sigstore

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

Where each one falls short

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

Avast One

  • Ransomware and Wi-Fi vulnerability protection only on paid plans
  • Free plan VPN is limited, no data breakthrough monitoring
  • Rebuilt app in May 2026 may have stability issues

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

Avast One

Free
  • FreeFree
    • Antivirus
    • Limited VPN
    • Privacy tools
  • Silver$2.99/month
    • Enhanced antivirus
    • VPN
    • Device cleanup
  • Premium$4.19/month
    • Full antivirus
    • VPN with 55 servers
    • Password manager
  • Premium Plus$11.67/month
    • All Premium features
    • 30 devices covered

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 Avast One if

  • You need antivirus.
  • You want to start without paying.
  • You work on Windows, macOS, iOS, Android.
  • You also want firewall.
Avast One 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 Avast One or Sigstore better?
Neither clearly leads. Avast One 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, Avast One or Sigstore?
Avast One starts at Free and Sigstore at Free.
Does Avast One or Sigstore run on more platforms?
Avast One runs on Windows, macOS, iOS, Android. Sigstore runs on Web, Linux, macOS, Windows, Self-hosted.
Can I use Avast One for free?
Both have a free tier, so you can try either at no cost before committing.
What is Avast One best used for?
Avast One is most often used for antivirus, internet security, privacy tools. Of those, antivirus and internet security are not what Sigstore is typically brought in for.
What can Avast One do that Sigstore cannot?
Avast One covers Antivirus, Firewall, VPN, Data breach monitoring. Sigstore covers Fulcio, Rekor, Keyless signing, Multi-language clients.

Answered from the vendors’ own pages

Avast One: Is Avast One free?

Yes. Avast One offers a free tier with antivirus, VPN (limited), and privacy tools. Paid plans start at $2.99/month for Silver and $4.19/month for Premium covering up to 5 devices.

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.

Avast One: What does Avast One include?

Avast One provides antivirus, VPN, password manager, device cleanup, Wi-Fi security, data breach monitoring, and protection against AI-generated scams and deepfakes.

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.

Avast One: Does Avast One have ransomware protection?

Ransomware protection is available only on paid plans, not the free tier. Free users get antivirus and basic protection only.

Source
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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