Nuix is described as 'Software platform for indexing, searching, analyzing and extracting knowledge from unstructured data, with applications that include digital investigation, cybersecurity, e-Discovery, information governance, email migration and privacy' and is an app in the Security & Privacy category. There are three alternatives to Nuix for Windows, Linux and Mac. The best alternative is Autopsy Forensic Browser, which is both free and Open Source. Other great apps like Nuix are EnCase (Paid) and Forensic Toolkit FTK (Paid).
EnCase contains tools for several areas of the digital forensic process; acquisition, analysis and reporting. The software also includes a scripting facility called EnScript with various API's for interacting with evidence.
FTK is a court-cited digital investigations platform built for speed, stability and ease of use. It provides comprehensive processing and indexing up front, so filtering and searching is faster than with any other product.