Hello! 
I have developed a small URL shortener with focus on NIMIQ, which however works a bit different than the conventional crypto-URL shorteners. It doesn’t mine NIMIQ in the user’s browser, but shows the visitor a fact about NIMIQ for 5 seconds before redirecting, maybe to motivate the visitor to learn more about NIMIQ.
Shortener: https://nimiq.link/
Source code: https://github.com/marvinschopf/nimiq-link (licensed under AGPL 3.0)
I would be very happy about feedback!