Synology is a popular NAS appliance
Portainer is a simple management solution for Docker. Easily manage your Docker hosts and Docker Swarm clusters via Portainer web user interface.
Plex media server allows you to aggregate all your personal media and access it anywhere you go. Enjoy your own content on all your devices with Plex.
ONLYOFFICE online editors for text documents, spreadsheets, and presentations with access to pro features and connect them to the platform of your choice with ready-to-use connectors: https://www.onlyoffice.com/download.aspx#connectors
Calibre-Web is a web app providing a clean interface for browsing, reading and downloading eBooks using an existing Calibre database.
Readarr is a ebook (and maybe eventually magazine/audiobook) collection manager for Usenet and BitTorrent users. It can monitor multiple RSS feeds for new books from your favorite authors and will grab, sort and rename them.
AdGuard Home is a network-wide software for blocking ads & tracking. After you set it up, it'll cover ALL your home devices, and you don't need any client-side software for that.
It operates as a DNS server that re-routes tracking domains to a "black hole," thus preventing your devices from connecting to those servers. It's based on software we use for our public AdGuard DNS servers -- both share a lot of common code.
Audiobookshelf is a self-hosted audiobook server for managing and playing your audiobooks.
Nextcloud is an open source, self-hosted file share and communication platform. Access and sync your files, contacts, calendars and communicate and collaborate across your devices.
M3U Proxy for Plex DVR and Emby Live TV
Jackett works as a proxy server: it translates queries from apps (Sonarr, Radarr, SickRage, CouchPotato, Mylar, DuckieTV, etc) into tracker-site-specific http queries, parses the html response, then sends results back to the requesting software.