Top PARSING GitHub Repositories & Tools (2026)

Get your documents ready for gen AI

Turn any PDF or image document into structured data for your AI. A powerful, lightweight OCR toolkit that bridges the gap between images/PDFs and LLMs. Supports 100+ languages.

The Cyber Swiss Army Knife - a web app for encryption, encoding, compression and data analysis

An incremental parsing system for programming tools

The Elegant Parser

Code smell detector for Ruby

FeedKit is a Swift library for Reading and Generating RSS, Atom, and JSON feeds.

scanf for modern C++

Open-source cross-platform symbolic algebra library for C# and F#. Can be used for both production and research purposes.

PennyWise automatically reads transaction SMS messages and transforms them into organized financial data with on-device AI assistance. No manual entry, no cloud processing, complete privacy.

A modern and lightweight library for working with email addresses in Java

AI-native web scraper. Single binary with a bundled Claude Code skill. MIT-licensed alternative to Firecrawl.

A few classes for extremely fast json parsing/serializing in modern C++. Possibly the fastest json parser in C++. Possibly the fastest json serializer in C++.

GraphQL Router / API Gateway framework written in Golang, focussing on correctness, extensibility, and high-performance. Supports Federation v1 & v2, Subscriptions & more.