Heytools - JavaScript tools, AJAX tools and some fully server side tools.
AirMeasure - Turn your phone into a ruler with the power of AR
NimbleText - NimbleText is a text manipulation and code generation tool available online or as a free download.
TapMeasure - Smart Augmented Reality Measurement
WordCounter.net - Count words, sentences, paragraphs etc.
MeasureKit - Whatever you want to measure, we have a tool for that.