Kazaa was a popular peer-to-peer file-sharing application that emerged in the early 2000s. It allowed users to share and download music, videos, and other files directly from one another's computers. Kazaa gained significant attention for its vast library of content, making it a go-to platform for many seeking free media. However, Kazaa faced legal challenges due to copyright infringement issues, leading to lawsuits from the Recording Industry Association of America (RIAA) and other organizations. As a result, the platform eventually shifted to a subscription model, but it struggled to compete with newer services and ultimately declined in popularity.