Need help identifying a good open source data annotation tool

TL;DR: To save my job, I need to identify an open source annotation / labeling tool that can be integrated into a new site/app that my company is building. The job is a bad match, but I just want to survive until I find another job.

Hey all,

I'm reaching out in a bit of a panic, hoping some of you might have the expertise or advice that can help me out of a tight spot. Here's my situation:

Earlier …

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