Planet Data Viewer
This project is a map tile server which wraps the Planet Developer API. It implements on-demand mosaics and drill-down.
A public web frontend is available: https://planet.jeffheidel.com
This is just a hobby project so please don't post the link to social media. If my AppEngine budget blows up I'll need to implement access controls.
Alternatively, run using the image from Docker Hub:
docker run -p 80:8080 jheidel/planet-server