Variety is a wallpaper changer that can automatically download wallpapers from various sources, like Flikr, Wallhaven, Bing Photo of the Day, Unslash, Desktoppr, NASA's Astronomy Picture of the Day, as well as a live wallpaper of the world sunlight map. It can also automatically fetch wallpapers recommended by other Variety users.

The app was updated recently with a new "safe mode" option, which can be used to avoid NSFW and sketchy images. This feature relies on user ratings, so it's not perfect, at least until more users rate the wallpapers.

OBS Studio 0.14.0 was released today (and 0.14.1 shortly as a hotfix release), adding deinterlacing, full NVIDIA NVENC encoder support, ALSA sound input source on Linux and more.

OBS Studio is a free, open source application which allows video recording and live streaming, available for Linux, Windows and Mac OS X. 

OBS Studio is a free, open source application which allows video recording and live streaming. The app can be used to stream to various popular websites such as Twitch.tv, YouTube, Hitbox.tv, Vaughn Live / iNSTAGIB.tv, DailyMotion, Connectcast.tv, GoodGame.ru, CyberGame.tv, CashPlay.tv along with custom streaming servers.

The original Open Broadcaster Software was rewritten, with the main goal of being multiplatform, along with a more powerful API and a more thorough feature set. The new multiplatform OBS Studio is currently in alpha and is available for Linux, Mac OS X and Windows.