D

data-validation

Read-only MySQL 8 to PostgreSQL migration tool in Python: schema conversion, batched loading, and row-level verification. Verified on 17,028,800 rows across 8 tables with 0 mismatches.

A Python-based educational toolkit for building environmental monitoring, featuring CSV validation, observation summaries, and documentation. Related resources: https://propertyenvirotech.com/

Bitcoin UTXO reconstruction pipeline with independent read-only auditor.

TruthLayer is an open-source product intelligence system that compares products using verified data, deterministic calculations, and transparent scoring models instead of opinions or assumptions. It normalizes product features, validates information across multiple sources, and produces reproducible rankings with clear explanations of how each result is computed. https://roxanneardary.com/truthlayer/

A comprehensive PHP validation library with support for 50+ validation rules, custom rules, profiles, and multi-language error messages

A hands-on showcase of modern data validation approaches in Node.js, covering Zod, Joi, Valibot, etc and best practices.