Product tours are essential for guiding first-time users through a specific set of actions within an application or product. They help increase feature adoption, personalize user experience, and improve overall customer satisfaction and retention. The top 16 product tour software solutions include Chameleon, Pendo, Appcues, WalkMe, Userpilot, Product Fruits, Lou Assist, Userflow, Apty, UserGuiding, Whatfix, Intro.js, Intercom Product Tours, Userlane, Stonly, and Scribe. Key features to look for in these tools include ease of use, audience segmentation capabilities, versatility, continuity, customization options, and high-quality support.