Side by side
FOSSA vs Nancy
Both stand on software composition analysis software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan APILinuxSelf-hosted+1
FOSSA combines dependency analysis, policy enforcement, and SBOM workflows, with web and self-hosted deployment options. Keep in mind that Quick Import is less complete than CLI scanning, and plan limits vary.
Visit FOSSA Free plan LinuxMacSelf-hosted+1
Choose Nancy if you need a free command-line vulnerability scan for Go module dependencies and want to use it in documented CI workflows. Look elsewhere if your dependency set relies on commit-hash-only resolutions or you require official Sonatype product support.
Visit NancyThe facts
| FOSSA | Nancy | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | API, Linux, Self-hosted, Web | Linux, Mac, Self-hosted, Windows |
| Lowest paid plan | Free or on request | Free or on request |
| Plans published | 3 | 1 |
| Maker | Not published | Not published |
| Website | fossa.com | github.com |
| On software composition analysis software | #9 of 65 | #13 of 65 |
FOSSA: what it does well
- Analyzes dependencies in more than 30 languages.
- Can enforce policies that block builds.
- Supports SBOM generation, importing, exporting, and management.
- Includes CLI, CI/CD, and container scanning.
What to know first
- Quick Import produces less complete results than CLI scans.
- Free plan limits projects to five.
- Enterprise pricing is custom and not listed.
Nancy: what it does well
- Free and licensed under Apache-2.0.
- Accepts Go dependency data directly or through a pipe.
- Offers text, JSON, pretty JSON, and CSV output.
- Exclusions can target CVEs or Sonatype vulnerability IDs.
- Documents GitHub Actions and CircleCI integrations.
What to know first
- Only Go module dependencies are supported.
- Dependencies resolved by commit hash rather than proper versions are unsupported.
- The default stdin input limit is 100 MB.
- Maintainers direct users to GitHub Issues rather than Sonatype support tickets.