Hongkiat: 40 Best Free Thumb Drive Applications (2018). “Thumb drives are one of the most important and useful computer accessories you’ll ever find. These small devices are not just used to carry your data, you can use them for a lot of other functions and that includes running portable apps, and even an entire operating system. So in this post, I am listing down 40 free and useful thumb drive applications. These apps range from portable web browsers, computer games, cybersecurity, and data back up and sync solutions apart from many others.” Long list, decently annotated.