A list of tools is available on the STAC website.
STAC Browser is a web application that provides a UI to search and view STAC metadata. It takes a Catalog or a Collection as the entrypoint to allow the user to navigate through the metadata.
To deploy STAC Browser, you can follow this documentation.
For a quick start, you can use the demo instance, pass the link to the New Zealand Imagery STAC Catalog https://nz-imagery.s3-ap-southeast-2.amazonaws.com/catalog.json
and click on the Load
button.
The list of Collections can be filtered, in this example showing up all the 0.075m
resolution imagery:
Clicking on a Collection shows the details: