I like Quiver, use it every day, but it's development has kind of stalled/stopped for a couple of years, and it has some significant limitations. It's search capability is limited, and it can't do search and replace. At all. In any form. I had never seen a text handling program that couldn't replace text, but Quiver now has this distinction. If you need to do this, you have to open up Quiver's JSON in an actual text editor.