Top 20 Python Annotation Projects

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1. labelme

   1 7 14,929 9.1 Python

   Image Polygonal Annotation with Python (polygon, rectangle, circle, line, point and image-level flag annotation).

   

   Project mention: Convert LabelMe Annotations to YOLO Format with labelme-to-yolo | dev.to | 2024-12-29

   Convert LabelMe format into YoloV7 format for instance segmentation.

2. Civic Auth

   www.civic.com featured

   Simple auth for Python backends. Drop Civic Auth into your Python backend with just a few lines of code. Email login, SSO, and route protection built-in. Minimal config. Works with FastAPI, Flask, or Django.

   

3. diffgram

   2 9 1,881 6.8 Python

   The AI Datastore for Schemas, BLOBs, and Predictions. Use with your apps or integrate built-in Human Supervision, Data Workflow, and UI Catalog to get the most value out of your AI Data.

   

4. entity-recognition-datasets

   3 3 1,548 6.2 Python

   A collection of corpora for named entity recognition (NER) and entity recognition tasks. These annotated datasets cover a variety of languages, domains and entity types.

   

5. refinery

   4 21 1,455 3.6 Python

   The data scientist's open-source choice to scale, assess and maintain natural language data. Treat training data like a software artifact.

   

   Project mention: Ultimate guide to prompt engineering | dev.to | 2024-12-07

   Tools: Platforms like LangChain, Kern AI Refinery, and Langtail simplify testing, debugging, and optimizing prompts.

6. projects

   5 6 1,396 3.4 Python

   🪐 End-to-end NLP workflows from prototype to production (by explosion)

   

7. eggnog-mapper

   6 1 645 3.1 Python

   Fast genome-wide functional annotation through orthology assignment

   

8. mypy_boto3_builder

   7 1 631 9.5 Python

   Type annotations builder for boto3 compatible with VSCode, PyCharm, Emacs, Sublime Text, pyright and mypy.

   

9. InfluxDB

   www.influxdata.com featured

   InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.

   

10. bbox-visualizer

    8 2 405 8.5 Python

    Make drawing and labeling bounding boxes easy as cake

    

11. remarks

    9 13 379 0.0 Python

    Extract annotations (highlights and scribbles) from PDF, EPUB, and notebooks marked with reMarkable tablets. Export to Markdown, PDF, PNG, SVG

    

12. spectree

    10 3 344 8.0 Python

    API spec validator and OpenAPI document generator for Python web frameworks.

    

13. kobuddy

    11 1 164 4.4 Python

    Kobo database backup and parser: extracts notes, highlights, reading progress and more

    

14. pandas-stubs

    12 1 122 0.0 Python

    Pandas type stubs. Helps you type-check your code. (by VirtusLab)

    

15. gum

    13 5 98 8.4 Python

    Repository for the Georgetown University Multilayer Corpus (GUM) (by amir-zeldes)

    

16. infer-types

    14 6 89 3.8 Python

    A CLI tool to automatically add type annotations into Python code. Must have tool for annotating existing code.

    

17. YOLO-Coco-Dataset-Custom-Classes-Extractor

    15 1 32 0.0 Python

    Get specific classes from the Coco Dataset with annotations for the Yolo Object Detection model for building custom object detection models.

    

18. cocojson

    16 1 30 0.0 Python

    Utility scripts for COCO json annotation format

    

19. pdf-highlights

    17 1 24 10.0 Python

    Export your PDF highlights to markdown files.

    

20. valdec

    18 1 14 2.7 Python

    Decorator for validating function arguments and result

    

21. astypes

    19 6 7 3.5 Python

    Python library to infer types for AST nodes. Make the most powerful Python linters and formatters!

    

22. aasetpy

    20 1 5 9.2 Python

    Python Project Kickstarter Template.

    

    Project mention: Introducing 'aasetpy' | dev.to | 2025-02-05

    Ready to revolutionize your project setup? Check out the 'aasetpy' repository here and see the magic for yourself! We're always open to contributions, so if you have ideas to make the starting point even better, don't hesitate to jump in. Let's make Python project initialization a breeze together! 🚀💻

23. Sevalla

    sevalla.com featured

    Deploy and host your apps and databases, now with $50 credit! Sevalla is the PaaS you have been looking for! Advanced deployment pipelines, usage-based pricing, preview apps, templates, human support by developers, and much more!

    

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• A note from our sponsor - Civic Auth
  www.civic.com | 31 Aug 2025

  Drop Civic Auth into your Python backend with just a few lines of code. Email login, SSO, and route protection built-in. Minimal config. Works with FastAPI, Flask, or Django. Learn more →

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