An annotation tool for aligning chunks from a sentence pairs to each other?

Question

We need a tool which given two sentences, it lets the user select spans inside each sentence and align them together. Here is an example:

I have been looking around for such a tool, but haven't found anything yet. Now I am thinking that I'd need to write it myself. I wonder if there are any tools our there which are close to what I want, so that it would save me some time.

Suggestions are highly appreciated.

Answer 1

I created this visualization for this purpose: https://github.com/danyaljj/sentenceToSentenceAlignmentVisualization