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Cybersecurity · head to head

RoboForm vs Sigstore

RoboForm logo

RoboForm

Cybersecurity

Password manager and form filler

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: RoboForm free plan is restricted to a single device; syncing across multiple devices requires the Premium plan; 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.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which RoboForm and Sigstore actually diverge.

Attributes where RoboForm and Sigstore differ
AttributeRoboFormSigstore
Pricing modelfreemiumOpen source, public instance free to use
PlatformsWebWeb, Linux, macOS, Windows, Self-hosted

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 RoboForm

Nothing recorded that Sigstore does not also cover.

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.

RoboForm

  • Auto-filling passwords across multiple devices and websitesnot Sigstore
  • Sharing family passwords securely with household membersnot Sigstore
  • Receiving alerts when credentials appear in data breachesnot Sigstore
  • Granting emergency access to trusted contacts for account recoverynot Sigstore
  • Enforcing multi-factor authentication across online accountsnot Sigstore

Sigstore

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

Where each one falls short

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

RoboForm

  • Free plan is restricted to a single device; syncing across multiple devices requires the Premium plan
  • Premium's advertised $2.49 per month rate is a first-year discount that renews at $29.88 per year
  • Family plan covers only up to 5 accounts and likewise renews at a higher $47.75 per year after the first-year discount

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

RoboForm

Free
  • FreeFree
    • Unlimited passwords on single device
    • Advanced 2FA
    • Password breach monitoring 5 emails
  • Premium$2.49/month
    • Billed annually
    • All Free features
    • Unlimited devices
  • Family$3.98/month
    • Billed annually
    • Up to 5 Premium accounts
    • 30-day money-back guarantee

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 RoboForm if

  • You want to start without paying.
RoboForm 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 RoboForm or Sigstore better?
Neither clearly leads. RoboForm 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, RoboForm or Sigstore?
RoboForm starts at Free and Sigstore at Free.
Does RoboForm or Sigstore run on more platforms?
RoboForm runs on Web. Sigstore runs on Web, Linux, macOS, Windows, Self-hosted.
Can I use RoboForm for free?
Both have a free tier, so you can try either at no cost before committing.
What is RoboForm best used for?
RoboForm is most often used for auto-filling passwords across multiple devices and websites, sharing family passwords securely with household members, receiving alerts when credentials appear in data breaches, granting emergency access to trusted contacts for account recovery. Of those, auto-filling passwords across multiple devices and websites and sharing family passwords securely with household members are not what Sigstore is typically brought in for.
What can RoboForm do that Sigstore cannot?
Sigstore covers Fulcio, Rekor, Keyless signing, Multi-language clients.

Answered from the vendors’ own pages

RoboForm: How much does RoboForm cost?

Premium plan is $2.49 per month when billed annually ($29.88/year renewal rate). Family plan supports up to 5 Premium accounts at $3.98 per month annual. Free plan is available with basic password management.

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.

RoboForm: Is there a money-back guarantee?

Yes, RoboForm offers a 30-day money-back guarantee on all paid plans.

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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