Am I Null-Routed? is a friendly, open-source tool you can run on your device to find out if it can be reached beyond LAN.
Hax.to is a linking service that allows you to shorten links and prevents target sites from knowing the referrer.
LavaShot is an easy and modern screenshot tool with built-in uploader to easily save and share your screenshots.
A project which strives to collect as many nasty domains as possible and puts them in one big file.