TrueNAS is described as '(formerly FreeNAS) is an operating system that can be installed on virtually any hardware platform to share data over a network. TrueNAS is the simplest way to create a centralized and easily accessible place for your data' and is a very popular NAS system in the backup & sync category. There are more than 25 alternatives to TrueNAS for a variety of platforms, including Linux, Windows, Self-Hosted, Mac and Android apps. The best TrueNAS alternative is openmediavault, which is both free and Open Source. Other great apps like TrueNAS are Unraid, Rockstor, XigmaNAS and Western Digital My Cloud.
Turn a PC into a web server and share photos, movies, videos and music/MP3 files securely, free. BadBlue supports slide-shows, photo albums, file/music search, folder explorer, uploads and downloads, free domain-name support - and much more.
