Top 23 Parser Library Open-Source Projects

• parser

  12 5,245 1.1 JavaScript

  📜 Extract meaningful content from the chaos of a web page

  

Project mention: Show HN: I made a tool to clean and convert any webpage to Markdown | news.ycombinator.com | 2024-04-14

Thoroughly scraping is challenging, especially in an environment where you don’t have (or want) a JavaScript runtime.

For content extraction, I found the approach the Postlight library takes quite neat. It scores individual html nodes based on some heuristics (text length, link density, css classes). It the selects the nodes with the highest score. [1] I ported it to Swift for a personal read later app.

[1] https://github.com/postlight/parser

• Lark

  35 4,481 7.5 Python

  Lark is a parsing toolkit for Python, built with a focus on ergonomics, performance and modularity.

  

Project mention: Show HN: I wrote a RDBMS (SQLite clone) from scratch in pure Python | news.ycombinator.com | 2023-08-13

Lark supports, and recommends, writing and storing the grammar in a .lark file. We have syntax highlighting support in all major IDEs, and even in github itself. For example, here is Lark's built-in grammar for Python: https://github.com/lark-parser/lark/blob/master/lark/grammar...

You can also test grammars "live" in our online IDE: https://www.lark-parser.org/ide/

The rationale is that it's more terse and has less visual clutter than a DSL over Python, which makes it easier to read and write.

• InfluxDB

  www.influxdata.com sponsored

  Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  

• participle

  8 3,312 6.8 Go

  A parser library for Go

Project mention: Parser generator | /r/golang | 2023-09-14

I know of tools like Kaitai that do essentially what I want, just curious about my options. I guess something like https://github.com/alecthomas/participle could work to parse the format, then I'd have to generate code based on the parsed data or something

• Chevrotain

  3 2,397 6.7 TypeScript

  Parser Building Toolkit for JavaScript

  

Project mention: Ohm: A library and language for building parsers, interpreters, compilers, etc. | news.ycombinator.com | 2023-10-31

How does this compare with Chevrotain[1]?

More specifically, can I build lexers with Ohm? Can it generate a syntax diagram from a grammar?

[1]: https://github.com/chevrotain/chevrotain

• Sprache

  10 2,271 0.0 C#

  A tiny, friendly, C# parser construction library

  

• Recognizers-Text

  10 1,645 6.5 C#

  Microsoft.Recognizers.Text provides recognition and resolution of numbers, units, date/time, etc. in multiple languages (ZH, EN, FR, ES, PT, DE, IT, TR, HI, NL. Partial support for JA, KO, AR, SV). Packages available at: https://www.nuget.org/profiles/Recognizers.Text, https://www.npmjs.com/~recognizers.text

  

• cppast

  2 1,636 1.3 C++

  Library to parse and work with the C++ AST

  

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• Superpower

  4 968 0.0 C#

  A C# parser construction toolkit with high-quality error reporting

  

Project mention: I made a new filtering library for .NET projects | /r/dotnet | 2023-05-01

Awesome little project you got going on there :) , I've done something similar with Ooze and extracted it to Ooze.Query later. I need to push them to nuget also when I catch some time (I jump back to it from time to time when I have some free space). Cool to see another person using parser construction libs. I see you used Sprache, I went for SuperPower for this situation.

• megaparsec

  3 892 6.5 Haskell

  Industrial-strength monadic parser combinator library

• Pidgin

  3 828 6.7 C#

  A lightweight and fast parsing library for C#.

Project mention: Library to parse slash commands with validation? | /r/dotnet | 2023-06-02

pigeon https://github.com/benjamin-hodgson/Pidgin

• BioJava

  2 575 8.2 Java

  :book::microscope::coffee: BioJava is an open-source project dedicated to providing a Java library for processing biological data.

  

Project mention: Outperforming Rust DNA sequence parsing benchmarks by 50% with Mojo | news.ycombinator.com | 2024-02-08

Here is a cache of valid and invalid FASTQ files for unit tests

https://github.com/biojava/biojava/tree/master/biojava-genom...

• FParsec

  0 508 0.0 F#

  A parser combinator library for F#

• dart-petitparser

  1 444 7.9 Dart

  Dynamic parser combinators in Dart.

  

• scpi-parser

  1 433 4.8 C

  Open Source SCPI device library

• TatSu

  4 391 8.8 Python

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

  

• mecha

  1 392 5.8 Zig

  A parser combinator library for Zig (by Hejsil)

• gronx

  7 373 7.3 Go

  Lightweight, fast and dependency-free Cron expression parser (due checker, next/prev due date finder), task runner, job scheduler and/or daemon for Golang (tested on v1.13+) and standalone usage. If you are bold, use it to replace crontab entirely.

• CSLY

  2 334 9.0 C#

  a C# embeddable lexer and parser generator (.Net core)

• uriparser

  1 311 5.1 C

  :hocho: Strictly RFC 3986 compliant URI parsing and handling library written in C89; moved from SourceForge to GitHub

  

• Ksoup

  2 312 7.9 Kotlin

  Ksoup is a lightweight Kotlin Multiplatform library for parsing HTML, extracting HTML tags, attributes, and text, and encoding and decoding HTML entities.

Project mention: Compose Rich Text Editor 0.2.0 released, with a lot of new features | /r/Kotlin | 2023-05-22

In this version 0.2.0 I added HTML support. Markdown support is coming to 0.3.0. Since the library is multiplatform and there's no Multiplatform HTML or Markdown parsers available, I built my own multiplatform parsing library which is Ksoup and for now it only supports HTML https://github.com/MohamedRejeb/Ksoup

• autumn

  3 119 0.0 Java

  A Java parser combinator library written with an unmatched feature set.

• parse_it

  0 107 7.2 Python

  A python library for parsing multiple types of config files, envvars & command line arguments that takes the headache out of setting app configurations.

• booleval

  1 81 0.0 C++

  Header-only C++17 library for evaluating logical expressions.

• SaaSHub

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Parser Library related posts

• Library to parse slash commands with validation?
  3 projects | /r/dotnet | 2 Jun 2023
• I made a new filtering library for .NET projects
  7 projects | /r/dotnet | 1 May 2023
• An apologia for lazy evaluation
  2 projects | /r/haskell | 23 Mar 2023
• can you create your own program language in python, if yes how?
  1 project | /r/Python | 12 Mar 2023
• Lark a Python lexer/parser library
  1 project | news.ycombinator.com | 27 Feb 2023
• Create your own scripting language in Python with Sly
  1 project | /r/Python | 28 Jan 2023
• Creating a language with Python.
  2 projects | /r/ProgrammingLanguages | 18 Dec 2022
• A note from our sponsor - WorkOS
  workos.com | 29 Apr 2024

  The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning. Learn more →

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