There are hundreds of things you can self-host. Most people who try to run all of them burn out within a month. This is a shortlist organized by the problem each one solves, not an exhaustive directory.
Media: Jellyfin
Open-source, no phone-home telemetry, no subscription tier gating features behind a paywall. Pairs well with the *arr stack (Sonarr/Radarr/Prowlarr) if you want automated library management, but Jellyfin alone is a complete, useful project on its own — start there before adding the automation layer.
Photos: Immich
The most credible self-hosted alternative to a cloud photo backup service at this point — mobile app with automatic background upload, facial recognition, timeline view. This is one of the higher-value apps to self-host if you’re currently paying for cloud photo storage, since it directly replaces a recurring subscription.
DNS-level ad blocking: Pi-hole or AdGuard Home
Runs comfortably on the weakest hardware in your house. Blocks ads and trackers network-wide at the DNS level for every device, not just the one with a browser extension installed. Usually the first thing people self-host because the payoff is immediate and the resource cost is negligible.
Password manager: Vaultwarden
A lightweight, self-hosted-friendly implementation of the Bitwarden server API — same official mobile/browser clients, your own server. Worth the extra care on backups given what’s stored in it (see the backup note in the old laptop to home server guide).
File sync/cloud storage: Nextcloud
Heavier to run and maintain than the others on this list, but replaces Google Drive/Dropbox functionality reasonably completely, including calendar and contacts sync if you want to get off a cloud account entirely. Don’t start here if this is your first self-hosted app — start with Pi-hole or Jellyfin and work up to Nextcloud once you’re comfortable with updates and backups.
A note on storage
Jellyfin, Immich, and Nextcloud all have the same hidden cost: they’re only as useful as the storage behind them, and a laptop’s internal drive fills up fast once it’s holding a media library or a full photo backup. Two common ways to solve this: an external USB hard drive plugged straight into the server for the simplest setup, or a small dedicated NAS enclosure if you want storage that survives the server itself being replaced. Buy more than you think you need — media and photo libraries only grow. (Affiliate links — see the about page for the disclosure.)
Reverse proxy: Caddy or Traefik
Not user-facing on its own, but once you’re running more than one or two services, a reverse proxy with automatic HTTPS certificates makes everything else easier to reach and secure. Caddy in particular is worth it for how little configuration it needs compared to nginx for the same result.
Picking your first one
If you only self-host one thing this month, make it Pi-hole or AdGuard Home — lowest resource cost, immediate and visible payoff, and it teaches you the Docker Compose workflow you’ll reuse for everything else on this list.