Log
$site->log('My message', 'error');
A little log utility (KLogger wrapper)
Related plugins
Monolog
by Bruno Meilick
Use Monolog to log data to files, databases, notifications and more.
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by hana+nils
Tracker is a plugin to track content changes and create panel logs or front-end notifications in member areas.
Kirbylog
by Johann Schopplich
Zero-dependency global kirbylog() helper for any content

Logger
by Michael Scheurich
This plugin logs all actions in the panel and displays them in a separate view.
Other plugins by Bart Vandeputte
Autopublish
by Bart Vandeputte
Schedule automatic publishing of pages (drafts) on a certain date & time
Better Search
by Bart Vandeputte
Search for full word combinations rather than just individual words.
Fingerprint
by Bart Vandeputte
Cache-busting utility to fingerprint assets
Queue
by Bart Vandeputte
Enable workers in Kirby that can do tasks in the background at scheduled intervals (cron) by working through queues of jobs
Virtual pages helper kit
by Bart Vandeputte
Opinionated boilerplate helper to make it easier to work with virtual pages in a multilingual kirby 3 setup.