Top PARSER GitHub Repositories & Tools (2026)

LL(k) and LALR(1) parser generator for Rust and C#

A view for display markdown text.support markdown streaming like gpt&claude&gemini&deepseek

A tree-sitter grammar for the Swift programming language.

PHP library for Parsing, Generation and Sending HL7 v2 messages

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

PHP library to read and extract text, markdown & images from PDFs - Fast & Low memory - Built from scratch

Binary parser for the .evtc files that arcdps generates after a boss encounter. This will generate a .html file where the results can be easily reviewed.

Rust crate for writing GStreamer plugins and various plugins - This repository moved to https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs

StAEDI - Streaming API for EDI: Java library featuring a reader/parser, writer/generator, and validation

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

📝 Markdown and HTML renderer for Svelte 5 — built for streaming AI agent output from Claude Code, ChatGPT, and agentic workflows. XSS-safe defaults, token caching, TypeScript types.

m3u8 file downloader library and chrome & firefox extensions/add-on's

An SQL Parser/Lexer for C#

Transforms a Hydra API doc in an intermediate representation that can be used for various tasks such as creating smart API clients, scaffolding code or building administration interfaces.

MCP server for Final Cut Pro XML. Lets Claude read, edit and generate real timelines: cut detection, markers, roles, transcript-based editing. Published on PyPI as fcp-mcp-server.

The most advanced LR(1) parsing library for C# and F#

PHP library to find URLs in text and turn them into clickable links. Made to handle complex URLs, HTML markup and edge cases.

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++.

A universal S-expression parser for Ruby.

A universal converter for singing voice projects which is cross-platform and multi-lingual