1080 — SOCK Proxy
2049 — Network File System (NFS)
2181 — Apache ZooKeeper
2375 — Docker REST API (HTTP)
2376 — Docker REST API (HTTPS)
3306 — MySQL
3478 — STUN, TURN (NAT Traversal)
4000 — Phoenix, Jekyll
4001 — etcd
4200 — AngularJS
4567 — Sinatra
5000 —“The Other Development Framework Port.”Flask (Python) uses 5000 as the default development port. As does ASP.NET Core.
5222 — XMPP (Extensible Messaging and Presence Protocol)
5349 — STUN, TURN over TLS
5353 — Multicast DNS — Follows the same pattern as SMTP, occasionally being run on port 3535. Duplicates the privileged port (DNS uses 53).
5432 — PostgreSQL
5900 — VNC (using a remote frame buffer, RFB)
6000 — X11 (over the network). Common to take the display number and add it to 6000 (e.g., DISPLAY 6 would be served over 6006).
6379 — Redis
6660 — IRC (Internet Relay Chat)
6881 — BitTorrent
8000 —“Python Development Framework Port.”Includes Django and Python 3’s http.server.
8080 —“The HTTP web server port.”Like 5353 (Multicast DNS) and 3535 (SMTP), an unprivileged port to run an HTTP webserver.
8333 — Bitcoin
8888 — Jupyter Notebook,
8983 — Apache Solr
9000 — Used by various applications, but no central theme or extremely well-known application.
25565 — Minecraft
27017 — MongoDB
51820 — WireGuard