Plex Your content—from live and recorded TV and personal media, to on-demand web shows, video news, and podcasts—beautifully organized and ready to stream everywhere.
Emby a personal media server with apps on just about every device.
Kodi an award-winning free and open-source home theater/media center software and entertainment hub for digital media.
OpenPHT a community-driven fork of Plex Home Theater
Myflix Myflix tries to be a somewhat simple and lightweight "DIY Netflix", similar to Plex, streama or Emby, for your DIY NAS, especially aimed at the Raspberry Pi/Odroid/etc ecosystem.
Stremio Multi-platform video content aggregator with a comprehensive add-on system for extending the functionality
Gerbera UPnP Media Server for 2018 (Based on MediaTomb)
Serviio Serviio is a free media server. It allows you to stream your media files (music, video or images) to renderer devices (e.g. a TV set, Blu-ray player, games console or mobile phone) on your connected home network.
OSMC OSMC (short for Open Source Media Center) is a Linux distribution based on Debian that brings Kodi to a variety of devices.
Subsonic Music and movie streaming server with a client app and web frontend
Rygel Rygel is a home media solution (UPnP AV MediaServer) that allows you to easily share audio, video, and pictures to other devices.
PimpMyStremio Local add-on manager for Stremio add-ons, adds tens of new (self-hosted, and much more powerful) add-ons to Stremio
Stremio Downloader An application that allows you to download any stream from Stremio (as opposed to just stream it). Also includes an internal add-on that lets users watch their downloaded content in Stremio while being offline
SRT2UTF-8.bundle Plex Agent that'll convert sidecar subtitle files into UTF-8
PlexTools.bundle Downloads subtitles for any videos in your library from OpenSubtitles and modifies them to work with Roku clients, and converts videos to MP4 for direct play
FMoviesPlus.bundle Plex Media Server plug-in designed for FMovies, G2G, Primewire and more.
plex_autoscan Script to assist sonarr/radarr with plex imports.
plexupdate script to simplify the life of Linux Plex Media Server users.
plex2netflix See how much of your media from Plex is available on Netflix.
plexReport Scripts to generate a weekly email of new additions to Plex
plex-sync A simple command-line utility to synchronize watched/seen status between different Plex Media Servers.
PlexIPTV This app simulates a DVR device for Plex by providing a layer to any IPTV provider (that provide an m3u8 playlist)
Plex Media Tagger Uses the metadata held in the PlexMediaServer to tag media files
PlexEmail This script aggregates all-new TV, movie and music releases for the past configured time then optionally writes to your web directory and sends out an email.
Transmogrify A Chrome extension that adds several features to the Plex/Web 2.0 client for Plex
/r/Addons4Kodi Discussion and links pertaining to unofficial add-ons for Kodi Media Center
Seren Streaming addon which works with Premiumize and Real-Debrid to stream torrents with the appropriate provider package instantly, and behaves similarly to Netflix, with autoplay and Up Next integration
Ultimate Kodi Guide ULTIMATE GUIDE TO INSTALL KODI + POPULAR STREAMING ADDONS by /u/giorgiomilan
kodi-headless A headless install of Kodi in a docker container, most useful for a MySQL setup of Kodi to allow library updates to be sent without the need for a player system to be permanently on.
Exodus Redux The newest Exodus fork around, paired with LambdaScrapers.
Huge list by /u/nbatman