Hey HN!

Markup is an open-source annotation tool for transforming unstructured documents into a structured format that can be used for ML, NLP, etc.

Markup learns as you annotate in order to speed up the process by suggesting complex annotations to you.

There are also a few different in-built tools, including:

- A data generator that helps you to produce synthetic data for training the suggestion model

- An annotator diff tool that helps you to compare annotations produced by multiple annotators

It's still very much a work in progress (and the documentation is severely lacking), but the ultimate goal is to make a tool that's as useful as https://prodi.gy/, without the $400 price tag.