FOSSology is described as 'open source license compliance software system and toolkit. As a toolkit you can run license, copyright and export control scans from the command line. As a system, a database and web ui are provided to give you a compliance workflow'. There are more than 10 alternatives to FOSSology for a variety of platforms, including Linux, Windows, Mac, Online / Web-based and SaaS. The best alternative is FOSSA, which is free. Other great apps like FOSSology are ScanCode (Free, Open Source), Ninka (Free, Open Source), Slic (Free, Open Source) and Licensee (Free, Open Source).
Ninka is a lightweight license identification tool for source code. It is sentence-based, and provides a simple way to identify open source licenses in a source code file. It is capable of identifying several dozen different licenses (and their variations).
WhiteSource is the leading solution for agile open source security and license compliance management. It integrates with your development environments and DevOps pipeline to detect open source libraries with security or compliance issues in real-time.
WhiteSource Bolt is a FREE tool that scans all of your projects to detect vulnerable open source components. It provides actionable remediation paths to enable a quick fix. Available on Github & Azure DevOps Marketplaces: bolt.whitesourcesoftware.com.