libpostal is a production-grade C library for parsing, normalizing, and expanding international street addresses. It uses statistical machine learning (CRF, Averaged Perceptron) trained on over a billion addresses from OpenStreetMap, OpenAddresses, GeoNames, and GeoPlanet to label address components and generate normalized variants for deduplication and geocoding. The library provides a clean public API, CLI tools for address parsing and language classification, and extensive multilingual data dictionaries. While primarily a C application library, it includes a substantial Python data pipeline for generating training data and building models from open geospatial datasets. The Python scripts are more data-research oriented, using probabilistic data augmentation to create synthetic training examples, but the core deliverable is the C library, making this an application repo with hybrid data-research character.
ScienceBeam Parser is a scientific document parsing library and service that converts PDF/DOCX documents into structured formats (TEI/JATS XML) using machine learning models. It provides a FastAPI-based web service with GROBID-compatible endpoints, a CLI for training data generation, and a modular pipeline of models for segmentation, header, citation, reference extraction, etc. The system includes benchmarking tools for performance evaluation against GROBID baselines and training utilities for model improvement. While it contains research-oriented components (benchmarking, training), its primary character is as a deployable application/library for document processing.