Cybersecurity · head to head
Metasploit vs Sigstore
Metasploit
Cybersecurity
The world's most used penetration testing framework
- From
- Free
- Rated
- -
Sigstore
Cybersecurity
Free public signing and transparency infrastructure for open source artifacts
- From
- Free
- Rated
- -
The short version
- Each has a real cost: Metasploit the free Framework edition is command line only; the web interface is Pro only; 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: Metasploit covers Exploit database, Sigstore covers Fulcio.
- Prices and features above were last checked on 31 August 2026.
Where they differ
Only the attributes on which Metasploit and Sigstore actually diverge.
| Attribute | Metasploit | Sigstore |
|---|---|---|
| Pricing model | freemium | Open source, public instance free to use |
| Platforms | Desktop, Cli | Web, Linux, macOS, Windows, Self-hosted |
| Founded | 2000 | Unknown |
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 Metasploit
- Exploit database
- Payload generation
- Post-exploitation
- Evasion modules
- Auxiliary scanners
- Social engineering
- Credential harvesting
- Session management
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.
Metasploit
- Penetration testing and exploit development against known vulnerabilitiesnot Sigstore
- Validating whether a reported vulnerability is actually exploitablenot Sigstore
- Running phishing and credential attack simulations on the Pro editionnot Sigstore
Sigstore
- Open source projects signing releases without running a certificate authoritynot Metasploit
- Organisations meeting a signed-artifact requirement without buying a signing productnot Metasploit
- Publishing provenance that a consumer can verify independently of younot Metasploit
- Self-hosting the same components where a public log is unacceptablenot Metasploit
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Metasploit
- The free Framework edition is command line only; the web interface is Pro only
- Automated exploitation, automated credential attacks and antivirus evading dynamic payloads are restricted to Metasploit Pro
- Reporting, audit wizards, task chains and closed loop vulnerability validation are Pro only
- Rapid7 publishes no price for Metasploit Pro and routes buyers to contact sales
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
Metasploit
Free- Metasploit Framework (OSS)Free
- Open source
- 1500+ exploits
- Command line
- Metasploit ProFree
- Web interface
- Automated testing
- Phishing campaigns
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 Metasploit if
- You need exploit database.
- You want to start without paying.
- You work on Desktop, Cli.
- You also want payload generation.
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.
Questions people ask
- Is Metasploit or Sigstore better?
- Neither clearly leads. Metasploit 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, Metasploit or Sigstore?
- Metasploit starts at Free and Sigstore at Free.
- Does Metasploit or Sigstore run on more platforms?
- Metasploit runs on Desktop, Cli. Sigstore runs on Web, Linux, macOS, Windows, Self-hosted.
- Can I use Metasploit for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is Metasploit best used for?
- Metasploit is most often used for penetration testing and exploit development against known vulnerabilities, validating whether a reported vulnerability is actually exploitable, running phishing and credential attack simulations on the pro edition. Of those, penetration testing and exploit development against known vulnerabilities and validating whether a reported vulnerability is actually exploitable are not what Sigstore is typically brought in for.
- What can Metasploit do that Sigstore cannot?
- Metasploit covers Exploit database, Payload generation, Post-exploitation, Evasion modules. Sigstore covers Fulcio, Rekor, Keyless signing, Multi-language clients.
Answered from the vendors’ own pages
Metasploit: Is Metasploit Framework free to use?
Yes, Metasploit Framework is available as free open-source software with source code accessible via GitHub. Community support is provided through Slack, GitHub, Twitter, and email.
SourceSigstore: 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.
Metasploit: What is the difference between Metasploit Framework and Metasploit Pro?
Metasploit Framework is the free open-source version. Metasploit Pro is a commercial offering with customer support from Rapid7, though specific pricing and features are not detailed on the download page.
SourceSigstore: 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.
Metasploit: What support is available for the free Framework version?
Community-based support for Metasploit Framework is available through Slack, GitHub, Twitter, and email ([email protected]). Commercial customers using Metasploit Pro receive customer support from Rapid7.
SourceSigstore: 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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