NimbleText - NimbleText is a text manipulation and code generation tool available online or as a free download.
Makers.so - A website builder inside Figma.
WordCounter.net - Count words, sentences, paragraphs etc.
Flowkit - Sketch library for user flows/content maps/annotations
Heytools - JavaScript tools, AJAX tools and some fully server side tools.
Connection Flow Arrows - Create connected arrows for sitemaps & user flows in Sketch