Unfortunately I could not find anything up-to-date online about this topic. Similar to the question stated here: OS X Yosemite Spotlight extensions, is it possible by now to extend Spotlight on macOS Sierra?
Spotlight Search Not Working on MacBook: Check Your Spotlight Preferences. It is also important that you confirm your Spotlight Search preferences. Click on the Apple Menu at the top and choose System Preferences > Spotlight. Make sure that you are not excluding apps related to your search in your preferences here.
On your Mac, use Spotlight System Preferences to change the categories that appear in Spotlight search results, and to exclude specific folders or disks from Spotlight searches. Learn how to use Spotlight. To change these preferences, choose Apple menu > System Preferences, then click Spotlight .
Spotlight makes it easier for you to find things on your Mac. This tool can walk you through your Mac's data and show the shortest path to the items you need. Disabling Spotlight would be a solution if you noticed that it started using too much CPU.
Yes it is. Github user w0lfSchild is still actively maintaining this project: https://github.com/w0lfschild/Flashlight, which also allows writing your own plugins. It is actually a fork of the Flashlight project mentioned in the post you linked to
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With