Best Free Media server / NAS Software for Windows
Plex
Plex is highly flexible and easy to setup media server software and can be setup on any hard drive. It is good if you use NAS drives for setting up Plex server if you are planning to use it 24×7. You can easily download the software for desktop and app for your smartphone to access your data. It can be used with smart Tv, web browser, Xbox One, Apple Tv or Playstation. The free version comes with some limitations.
Kodi
Kodi is another popular open source NAS Software for Windows developed by XMBC. It is a free and open source (GPL) software media center for playing videos, music, pictures, games, and more. Kodi runs on Linux, OS X, Windows, iOS, and Android.
DivX
DivX is a free video player, video converter and media server for Windows or Mac. It allows you to play, create or stream your favorite videos up to 4K.
AllMediaServer
ALLMediaServer is free and still under development. It can setup easily and use yo store your media content such as music, videos, or photos. After installing the AllMediaserver you can use it to watch movies, view images or listen to music on tablets, smartphone, TVs supports DLNA or Samsung ALlshare.
Universal Media Server
It is an Opensource software and best part is its free with full media solution. It is little bit complex than Plex but we can accept that as it gives all pro features free of cost. The Universal Media server can be set up as NAS for software for windows.
Subsonic
Subsonic is packed with Podcast receiver, Chromecast, Sonos, jukebox mode, on-the-fly downsampling and conversion, multiple frontends, highly customizable, full support for tags, lyrics, and album art, DLNA, open REST API.
Serviio
Serviio is just like the Universal Media server. But it also has paid version which UMS doesn’t. The paid version gives you the Media Browser option with very intuitive browser-based UI. MediaBrowser also offers easier access to subtitles and stream quality controls.