Quiver

From their README

Quiver-alfred

Search Quiver from Alfred! Quiver-alfred quickly constructs a database of your notes for fast and easy querying.

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Usage

Type qset to set your quiver library location. Quiver-Alfred constructs a database of your notes to make querying as fast as possible. The database should refresh once every hour and should only take a few seconds to create.

Type q to use!

You can search tags by hitting q #.

Browse Notes within notebook:

Full Text Search using sqlite: