Hashtagify.me - Free hashtags search engine, with paid advanced analytics
Toby for LinkedIn - Save yourself needless clicks and your precious time & See company info without exiting the profile pageSimple as that
HashtagWiki.com - Hashtag Generator Tool
Link2Sheet - Save LinkedIn profiles to a Google Sheet with one click
HSHTG - Generate, manage, save and edit hashtags just in a few finger tap
JobTitle.io - Track job title changes