#parser

竜 TatSu generates Python parsers from grammars in a variation of EBNF

A validating SQL lexer and parser with a focus on MySQL dialect.

Parse bank statements — CAMT/ISO 20022, PAIN.001, CSV (EN/DE/FR/ES), OFX/QFX, MT940, PDFs (digital + scanned) — into unified Transactions. Deterministic parsers, LLM/vision fallback, Golden Rule + multi-currency + continuity verification, page provenance, dedupe, review, accuracy evals, CLI + REST API. 100% test coverage.

The Zephir Parser delivered as a C extension for the PHP language.

Open-source text-to-motion animation DSL. Write MarkdyScript to render animated scenes in the browser.

Rust wrapper for libxml2

Resolving Swagger/OpenAPI 2.0 and 3.0 Parser

YamlDotNet is a .NET library for YAML

THE fastest alternative JSON parser for Go that does not require schema

A high-performance Markdown parser and renderer for Angular, React, Svelte, Vue, HTML and ANSI.

Typescript version of MathJS with WebWorkers, WASM, and WebGPU on the roadmap.

F# grammar for treesitter

A cross-platform .NET library for IMAP, POP3, and SMTP.

A way to describe data using references and links.

A doc comment standard for TypeScript

Pure Go tree-sitter runtime

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An extremely fast CSS parser, transformer, bundler, and minifier written in Rust.

Community maintained fork of pdfminer - we fathom PDF

Command line arguments/options parser to use in Phalcon applications.

Official Node.js, Python, and Go SDKs plus the primitive CLI for Primitive — email infrastructure for AI agents. Generated from the OpenAPI spec.

Rust-native translation catalog engine for PO, FCL, and ICU MessageFormat: git-merge-friendly storage, AI-translation-native metadata, and release-ready QA.

sportsdataverse python package

Blazing fast Vue.js Toolchain. Compiler, Linter, Type Checker, Formatter, LSP, Story System, Editor Extensions. This already passed 9000+ test suites, includes real world E2E.

:angel: Library to enable support for cascading stylesheets in AngleSharp.

Transpile Pine Script v5/v6 to executable JavaScript with zero dependencies.

Kong is a command-line parser for Go

A TypeScript implementation of the popular Symfony Expression Language! This library allows you to evaluate complex expressions client-side, fully mirroring the functionality of the PHP version.

Up to 100x faster strings for C, C++, CUDA, Python, Rust, Swift, JS, & Go, leveraging NEON, AVX2, AVX-512, SVE, GPGPU, & SWAR to accelerate search, hashing, sorting, edit distances, sketches, and memory ops 🦖

🦀 High-performance HTML parsing library. Rust core with native bindings for Python, Node.js & WASM. SIMD-accelerated, memory-safe, consistent API everywhere.