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Cybersecurity · head to head

Cosign vs Visual Studio Code

Cosign logo

Cosign

Cybersecurity

Signs and verifies container images and artifacts, with or without managing keys

From
Free
Rated
-
Full reviewWebsite
Visual Studio Code logo

Visual Studio Code

Developer Tools

Code editing. Redefined.

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Cosign keyless signing inherits every weakness of the identity provider behind it. Sigstore’s own threat model states that if an identity provider is compromised, Sigstore will issue certificates to those identities, so a compromised account produces perfectly valid signatures.; Visual Studio Code requires extension installation for language-specific features and tooling
  • They diverge on capability: Cosign covers Keyless signing, Visual Studio Code covers IntelliSense.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Cosign and Visual Studio Code actually diverge.

Attributes where Cosign and Visual Studio Code differ
AttributeCosignVisual Studio Code
Pricing modelOpen source, no licence feeUnknown
PlatformsmacOS, Linux, Windows, DockerWindows, macOS, Linux, Web (via GitHub Codespaces)
CategoryCybersecurityDeveloper Tools
FoundedUnknown2015

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 Cosign

  • Keyless signing
  • Key and KMS signing
  • Registry-native storage
  • In-toto attestations
  • Offline verification
  • Trusted root and signing config

Only in Visual Studio Code

  • IntelliSense
  • Debugging
  • Built-in Git
  • Extensions
  • Integrated terminal
  • Syntax highlighting
  • Code refactoring
  • Snippets

What people use each for

The jobs each tool is most often brought in to do.

Cosign

  • Signing container images in a build pipeline without managing long-lived private keysnot Visual Studio Code
  • Attaching a signed bill of materials to a release so consumers can verify its provenancenot Visual Studio Code
  • Meeting a customer or regulatory requirement for signed artifactsnot Visual Studio Code
  • Verifying third-party images before they enter an internal registrynot Visual Studio Code

Visual Studio Code

  • Code editingnot Cosign
  • Web developmentnot Cosign
  • Debuggingnot Cosign
  • Version controlnot Cosign
  • Remote developmentnot Cosign

Where each one falls short

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

Cosign

  • Keyless signing inherits every weakness of the identity provider behind it. Sigstore’s own threat model states that if an identity provider is compromised, Sigstore will issue certificates to those identities, so a compromised account produces perfectly valid signatures.
  • A signature proves who signed, never whether they should have. The documentation is explicit that Sigstore cannot determine authorisation, so every consumer must write and maintain their own identity and issuer policy or verification means nothing.
  • Nothing is enforced without an admission controller. Signing changes what you can prove, not what runs, and the official policy controller has a small maintainer base for a component sitting in a cluster admission path.
  • Upgrades break pipelines. Version 3 changed defaults, version 4 is announced as removing legacy functionality and roughly half the command line flags, and two official client libraries still lacked support for the new log format as of mid 2026.
  • Signatures do not expire. An artifact signed before a maintainer account was compromised and one signed after are indistinguishable unless somebody is actively monitoring the transparency log, and almost nobody is.

Visual Studio Code

  • Requires extension installation for language-specific features and tooling
  • Performance can degrade with very large codebases (100,000+ files)
  • Git integration is basic; requires extensions for advanced version control workflows

Pricing, plan by plan

Cosign

Free
  • CosignFree
    • Apache-2.0
    • Public Sigstore infrastructure free to use
    • No usage limits published

Visual Studio Code

Free

No published plan breakdown. See the Visual Studio Code review.

Which should you pick?

Choose Cosign if

  • You need keyless signing.
  • You want to start without paying.
  • You work on macOS, Linux, Windows, Docker.
  • You also want key and kms signing.
Cosign review

Choose Visual Studio Code if

  • You need intellisense.
  • You want to start without paying.
  • You work on Windows, macOS, Linux, Web (via GitHub Codespaces).
  • You also want debugging.
Visual Studio Code review

Questions people ask

Is Cosign or Visual Studio Code better?
Neither clearly leads. Cosign starts at Free and Visual Studio Code at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Cosign or Visual Studio Code?
Cosign starts at Free and Visual Studio Code at Free.
Does Cosign or Visual Studio Code run on more platforms?
Cosign runs on macOS, Linux, Windows, Docker. Visual Studio Code runs on Windows, macOS, Linux, Web (via GitHub Codespaces).
Can I use Cosign for free?
Both have a free tier, so you can try either at no cost before committing.
What is Cosign best used for?
Cosign is most often used for signing container images in a build pipeline without managing long-lived private keys, attaching a signed bill of materials to a release so consumers can verify its provenance, meeting a customer or regulatory requirement for signed artifacts, verifying third-party images before they enter an internal registry. Of those, signing container images in a build pipeline without managing long-lived private keys and attaching a signed bill of materials to a release so consumers can verify its provenance are not what Visual Studio Code is typically brought in for.
What can Cosign do that Visual Studio Code cannot?
Cosign covers Keyless signing, Key and KMS signing, Registry-native storage, In-toto attestations. Visual Studio Code covers IntelliSense, Debugging, Built-in Git, Extensions.

Answered from the vendors’ own pages

Cosign: Does Cosign tell me if an image is vulnerable?

No. It has no vulnerability knowledge whatsoever. It can carry an SBOM as a signed attestation but never reads it. Pair it with a scanner.

Visual Studio Code: Is Visual Studio Code free?

Yes. Visual Studio Code is completely free to use under the MIT license. There are no subscription fees or paid tiers.

Source
Cosign: Is signing alone enough?

No. Verification is a command somebody runs. Without an admission controller enforcing it, an unsigned image still runs.

Visual Studio Code: Can I use VS Code for remote development?

Yes. The Remote Development extension pack allows development on remote machines via SSH, in containers, or in Windows Subsystem for Linux (WSL) while using the full VS Code feature set.

Source
Cosign: What does a bare cosign verify actually prove?

Very little. Without a pinned certificate identity and OIDC issuer, it accepts a valid signature from any identity at all.

Visual Studio Code: How many extensions are available?

The VS Code Marketplace contains thousands of extensions from Microsoft and the community for language support, debuggers, themes, formatters, and productivity tools.

Source
Cosign: What is the risk of keyless signing?

Your OIDC provider becomes the root of trust. Compromise of that account yields genuine, verifiable signatures, so account security is the control that matters.

Visual Studio Code: Does VS Code support debugging?

Yes. VS Code includes built-in debugging for JavaScript, TypeScript, and Node.js, and supports debugging for Python, C++, C#, Java, Ruby, Go, PHP, and other languages via extensions.

Source
Cosign: Should we expect breaking changes?

Yes. Version 4 is announced to remove roughly half the flags, and a post-quantum migration is named as a further breaking change after that.

Visual Studio Code: What operating systems does VS Code support?

VS Code runs on Windows, macOS, and Linux with identical features and keybindings across all platforms.

Source
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