What are helpful annotation tools (if any) I'm looking for tools that would help me and my team annotate training sets. I work in an environment with large sets of data, some of which are un- or semi-structured. In many cases there are registration that help in finding a grounded truth. In many cases however a curated set is needed, even if it just were for evaluation. A complicating factor is that some of the data can not leave the premise.

We are looking to annotate an object detection task, but I anticipate an image segmentation task, a text classification task and a sentiment detection task in the near future. 

What I'm looking for is a system that can help a group make an annotation, preferably in a way that motivates the annotators by showing group progress, relative individual progress and perhaps personal inter annotator agreement.
Doccano is an open source simpler alternative to Prodigy. Its native python via Django. I found it suitable for simple implementations.