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Dev tools · May 12, 2020

LightTag

The text annotation tool for teams

LightTag launched on May 12, 2020 with 71 votes, #729 of 4,813 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 6 years on.

What it does

NLP Annotation Tool for Teams With Active Learning and Search. Label data for NLP faster with your team and our AI. LightTag manages your workforce so you can focus on the important things.

Does a similar job

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  • LightTag2019 · talperry.com · ▲7

    The Next Annotation Tool for Teams

  • An annotation tool for ML and NLP2021 · getmarkup.com · ▲76

    The easy way to turn text into structure data

  • Collabwriting for Teams2024 · ▲689

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  • DeepTagger2025 · deeptagger.com · ▲386

    Hi HN, I built a tool for teaching LLMs how to extract structured data from documents by annotating, not prompt engineering. I’d love your feedback. How it works: - Upload a document (DOCX, PDF, image, etc.) - Select and tag parts of it (supports nesting, arrays, custom tag structures) - Upload another document → click "predict" → see editable annotations - Amend them and save as a new example - Call the API with a third document → get JSON back Use cases: - Identify "important clauses" in contracts - Extract "total value" from invoices - Anything subjective, like "healthy ingredients" on a…

  • Light2022 · ▲86

    One Stop Solution for Collaboration

  • Microsoft Teams2016 · teams.microsoft.com · ▲251

    Manage projects with Gantt charts and task tracking

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