There's no event quite like OSCON—the best place on Earth to sharpen your skills and discover new techniques, making you better at what you do and igniting your love of all things digital. You'll find everything open source: languages, communities, best practices, products and services. While the open source community has always been viewed as building the future—that future is here, and it's everywhere you look!Sponsored Listing
Tinger Mask is a free and open source software that can cover a region on the screen. Especially, it can cover the subtitles, which is the best way to learn a second language. It can run on any kinds of platform, like windows, linux, MAC OS, etc.