5.FakerFill

FakerFill is exactly the kind of tool that sounds too simple to matter until you're manually typing fake emails into the 47th form field of your QA workflow and contemplating switching careers. It's a free browser extension that detects field types and populates them with realistic fake data, plus saves templates so your test data stays consistent across runs. Privacy-focused is the right angle here since most form fillers either skimp on that or monetize your data — this one just works and stays in its lane. If you're doing any repetitive form testing, this saves enough time that it's genuinely worth installing.