Protecode Compact is described as 'full-featured software analysd license management tool'. There are more than 10 alternatives to Protecode Compact 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 Protecode Compact are ScanCode (Free, Open Source), FOSSology (Free, Open Source), Slic (Free, Open Source) and Ninka (Free, Open Source).
FOSSology is an 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.
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).