FOSSology

Overview

FOSSology takes individual files or software packages, unpacks packages when needed, and scans them with selected agents. Its web interface gives reviewers a place to assess findings and reuse decisions for files with matching hashes, while reports and API access help carry results into compliance processes.

The distinction between identifying license evidence and identifying software components matters. FOSSology can surface license and copyright information in scanned files, but cannot determine which libraries were used to create a binary. Teams that need that analysis should use binary analysis tools alongside it.

Key features

• Two license scanners: Nomos looks for license indicators using phrases, regular expressions, and heuristics. Monk compares text with stored license texts or user-defined phrases. Using both gives reviewers complementary ways to surface candidate license evidence, but findings still need review.
• Review workflow: The web interface supports reviewing findings, managing license texts, bulk recognition, and aggregated file views. Reusing reviews for matching file hashes can reduce repeated work when the same files recur.
• Copyright and export-control checks: The system finds copyright statements and surfaces keyword-based findings that may relate to export-control codes. Those keyword findings are material for review, not a determination that a code applies.
• Compliance outputs: FOSSology can generate SPDX 2.0 exports, Debian copyright files, hierarchical file lists with license identifiers, and Readme files containing identified license texts and copyright information. These formats support different reporting needs without making the scan itself a final legal assessment.
• Automation: Its REST API supports CI/CD integration, uploads and scan triggering from other applications, and command-line retrieval of SPDX files. That makes it more suitable for repeatable pipelines than a purely manual review tool.
• Deployment and licensing: Installation options include Docker, Vagrant with VirtualBox, or source installation. The project licenses its source code under GPL-2.0 or LGPL-2.1.

Pricing

FOSSology is free: its plan costs 0.00 USD per free and covers the open-source license-compliance toolkit and system. There is no paid tier or seat or scan quota to weigh in the plan described here. Its on-premise deployment is a fit for organizations that want to operate the system themselves; the trade-off is that deployment and support rely on the project’s installation options and voluntary community support through its mailing list. Bug reports can be filed through GitHub issues.

Platforms

FOSSology supports API, Linux, macOS, self-hosted, web, and Windows. Its documented deployment choices are Docker, Vagrant with VirtualBox, or source installation, making it a flexible fit for teams prepared to manage their own setup.

Who it's for

FOSSology suits companies, individuals, and groups seeking to improve open-source license compliance through scan review, obligation tracking, attribution reports, and SPDX or RDF SBOM import. It is a particularly good fit when teams need to examine files or packages, retain review work, and automate uploads or report retrieval. It is a weaker fit when the main requirement is identifying libraries inside binaries or when a team needs dedicated commercial support.

Pros and cons

• Pro: Multiple scanners, a web review workflow, and reusable reviews help turn raw findings into repeatable compliance work.
• Pro: SPDX, Debian copyright, hierarchical file-list, and Readme outputs cover several practical reporting formats.
• Pro: API and command-line options make CI/CD integration and automated SPDX retrieval possible.
• Con: It cannot identify libraries used to create a binary, so binary analysis needs another tool.
• Con: Community support is voluntary, which may not meet teams that require a contracted support channel.
• Con: Self-hosting and several installation routes give teams control, but also leave setup and operation to them.

Alternatives

Compare open-source license compliance software if you want to weigh FOSSology against other tools in the category.

• OHRisk is a free open-source CLI for Linux, macOS, and Windows; choose it if a command-line tool is the better fit.
• ScanCode Toolkit is a free software code scanning tool with API, self-hosted, and desktop platform support; consider it as another free scanning option.
• Apache Flink CDC is free, with released JARs and connectors under Apache License 2.0; its stated focus is distinct from FOSSology’s compliance workflow.
• licscan is a free standalone CLI at $0 per scan under Apache 2.0; pick it if that form and licensing model suit your needs.
• SourceTrust has a free open-source plan for eligible public GitHub repositories, subject to fair use and SourceTrust attribution, plus a 29.00 USD per month per-project plan. Consider it if a web-based project service is preferable.
• Double Open Compliance offers a free SaaS tier and supports API, self-hosted, and web use; consider it if SaaS is part of your preference.
• FOSSA has a free plan capped at 5 projects, 10 contributing developers, 1 release group, 5 dependency levels for scans, and 1 quality check. Its freemium model and free trial may suit teams that prefer that route and can work within the caps.
• REUSE Tool is free, needs no registration, and can be used offline; choose it if those characteristics are more important to your workflow.

Verdict

Choose FOSSology if you need a free, on-premise license-compliance system with review tools, useful report formats, and API support for automation. Its clearest reason to look elsewhere is binary component identification; teams needing that should pair FOSSology with binary analysis or choose a tool that covers that requirement.