NimbleText - NimbleText is a text manipulation and code generation tool available online or as a free download.
Flowkit - Sketch library for user flows/content maps/annotations
WordCounter.net - Count words, sentences, paragraphs etc.
Crystal: Sketch Mirror for Android - Crystal: Sketch Mirror for Android is an application that is designed for viewing your sketch designs in real-time, navigate prototypes and download content related to the sketches for offline viewing.
Heytools - JavaScript tools, AJAX tools and some fully server side tools.
Figma Mirror - Figma Mirror is an application that covers top trending designing or sketching ideas making your teamwork in a single environment and design better products from start to finish.