SiteSensor probes a remote web site or service and can look for a matching pattern in the response, or request and parse a JSON response and put selected values through simple expressions.
Documentation (with examples) is here: https://www.toggledbits.com/sitesensor/
It runs on UI7 and openLuup, and is available in the Alt App Store as well.
For all revisions, please refer to the CHANGELOG.md file for details.
2019-03-31: Version 1.11: Fixes a timezone offset problem in URL parameter substitution.
2019-03-17: Version 1.10: Ability to create virtual sensors and apply values from expressions to those sensors.
2018-07-29: Version 1.9
2018-06-24: Version 1.8
2018-02-11: Version 1.5
2018-02-05: Version 1.4