Internal Investigation Tools manage the intake, investigation, and resolution of workplace complaints, misconduct allegations, and employee relations cases — maintaining confidentiality, due process, and audit-ready documentation throughout. Core capabilities include anonymous intake channels (hotline, web, mobile), case assignment and workflow management, investigation timeline tracking, evidence and document attachment, interview note management, outcome and disciplinary action logging, and compliance reporting for regulatory and legal purposes. The category spans dedicated investigation platforms (NAVEX EthicsPoint, Case IQ, HR Acuity) and case management modules within broader ethics and compliance suites.