PlantUML is the most well-known UML tool in this category with millions of UML rendered. We have covered it in-depth in this interview with his creator but, in short, it supports all important UML diagrams (class, use case, activity, sequence, component, deployment and object diagrams but, to me, the strong point of this tool is the variety of scenarios in which can be used. There’s a huge ecosystem of tools around PlantUML to render textual UML diagrams anywhere you want.

An expanding story…

Text to ASCII art converter

text pre-processing pipelines in clojure

POS tagging, NER, sentence splitting/segmentation
all in GO. trainable

Browsh is a fully-modern text-based browser. It renders anything that a modern browser can; HTML5, CSS3, JS, video and even WebGL. Its main purpose is to be run on a remote server and accessed via SSH/Mosh