Plex!

Emby, formerly Media Browser, is a media aggregator plugin for Media Center that takes your recorded, digital, or ripped media and presents it in a simple, easy to use interface. Emby prides itself on delivering a fast, intuitive, media rich experience for the whole family.

Universal Media Server is a media server capable of serving videos, audio and images to any DLNA-capable device.It supports any device capable of DLNA and runs on all major operating systems: Windows, OS X and Linux.

OSMC (Open Source Media Center) is a free and open source media player based on Linux and founded in 2014 that lets you play back media from your local network, attached storage and the Internet. OSMC is the leading media center in terms of feature set and community and is based on the Kodi project.

Media center allowing to watch movies, series, YouTube channels instantly.

MiniDLNA (aka ReadyDLNA) is server software with the aim of being fully compliant with DLNA/UPnP-AV clients. It is developed by a NETGEAR employee …

Serviio is a free media server. It allows you to stream your media files (music, video or images) to any DLNA-certified renderer device (e.g. a TV set, Bluray player, games console) on your home network.

Madsonic is a web-based media streamer and jukebox fork of Subsonic Based on Java technology, Madsonic runs on most platforms, including Windows, Mac, Linux, OSX, and Unix variants.

MediaTomb is an open source (GPL) UPnP MediaServer with a nice web user interface, it allows you to stream your digital media through your home network and listen to/watch it on a variety of UPnP compatible devices.

HomeNet Local Area Network Media Server - lightweight alternative to Plex - ( HTML5 + Chromecast support )

ACCESS ALL YOUR FILES:- View the files and media libraries of all your computers- Merge your iTunes libraries and accounts for easy access- Automatically discover your GoPro video library- Access Dropbox, OneDrive, Box, Google Drive and other online services all in one place- Print documents or photos to most printers via WiFi or AirPrint- Email or SMS files to anyone you know

PlayOn is both browser and media server for your Windows PC which lets you magically stream your favorite shows, movies, even your personal media from your PC to your TV, smartphone or tablet. To display videos on your TV, PlayOn relies on a friend such as a game console like the Xbox 360, Playstation 3, Wii, WiiU or another supported device like a Roku. PlayOn is now also available in HD so you can watch online videos in HD on your TV! PlayOn allows consumers to watch online content from sites like Hulu, YouTube, Netflix, ESPN and more on their TV using existing game consoles. »

PS3 Media Server is a DLNA compliant Upnp Media Server for the PS3, written in Java, with the purpose of streaming or transcoding any kind of media files, with minimum configuration. Its backed up with the powerful Mplayer/FFmpeg packages.