I’ve just released version 1.0 of ox-tagfilter-js, after finally adding a search box to the UI. If you are an Org-mode user and publish org-exported HTML documents from your org-files, you might find this extension useful. It allows you to quickly filter document content, based on tags and heading text, using a web UI.
I use it to lookup stuff in my «digital brain», a growing huge journal of private notes that I maintain as an org-file. The org-file is automatically published to the web, and so I can read and search it easily from anywhere, including with my mobile phone.