Top 23 json-parser Open-Source Projects

• json

  93 40,446 7.7 C++

  JSON for Modern C++

Project mention: Learn Modern C++ | news.ycombinator.com | 2023-12-26

I have not done a "desktop" program in 25+ years and never using C++ (or C), since then I'm mostly a web developer (PHP,Elixir, JS, Kotlin etc).

I'm currently doing a C++ audio plugin with the Juce framework.

This website has been a good resource, alongside https://www.learncpp.com

But I was actually close to give up before using those two things:

- https://github.com/nlohmann/json : my plugin use a json api backend and the Juce json implementation is atrocious (apparently because of being born in previous c++ version), but this library is GREAT.

- ChatGPT 4. I'm not sure I would have "succeeded" without it, at least not in a reasonable time frame. ChatGPT 3.5 is slow and does not give good results for my use case but 4 is impressive. And I use in a very dumb way, just posing question in the web UI. I probably could have it directly in MSVC?

Also I must say, for all its flaws, I have a renewed appreciation for doing UI on the web ;)

• fastjson

  3 25,635 1.5 Java

  FASTJSON 2.0.x has been released, faster and more secure, recommend you upgrade.

  

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• SwiftyJSON

  4 22,448 4.5 Swift

  The better way to deal with JSON data in Swift.

  

• FlatBuffers

  48 22,088 8.7 C++

  FlatBuffers: Memory Efficient Serialization Library

  

Project mention: FlatBuffers – an efficient cross platform serialization library for many langs | news.ycombinator.com | 2023-09-18

• simdjson

  65 18,409 9.2 C++

  Parsing gigabytes of JSON per second : used by Facebook/Meta Velox, the Node.js runtime, ClickHouse, WatermelonDB, Apache Doris, Milvus, StarRocks

  

Project mention: Tips on adding JSON output to your command line utility. (2021) | news.ycombinator.com | 2024-04-20

It's also supported by simdjson [0] (which has a lot of language bindings [1]):

> Multithreaded processing of gigantic Newline-Delimited JSON (ndjson) and related formats at 3.5 GB/s

[0] https://simdjson.org/

[0] https://github.com/simdjson/simdjson?tab=readme-ov-file#bind...

• GJSON

  34 13,661 5.1 Go

  Get JSON values quickly - JSON parser for Go

Project mention: Rob Pike: Gobs of data (2011) | news.ycombinator.com | 2023-12-04

Someone made a benchmark of serialization libraries in go [1], and I was surprised to see gobs is one of the slowest ones, specially for decoding. I suspect part of the reason is that the API doesn't not allow reusing decoders [2]. From my explorations it seems like both JSON [3], message-pack [4] and CBOR [5] are better alternatives.

By the way, in Go there are a like a million JSON encoders because a lot of things in the std library are not really coded for maximum performance but more for easy of usage, it seems. Perhaps this is the right balance for certain things (ex: the http library, see [6]).

There are also a bunch of libraries that allow you to modify a JSON file "in place", without having to fully deserialize into structs (ex: GJSON/SJSON [7] [8]). This sounds very convenient and more efficient that fully de/serializing if we just need to change the data a little.

--

1: https://github.com/alecthomas/go_serialization_benchmarks

2: https://github.com/golang/go/issues/29766#issuecomment-45492...

--

3: https://github.com/goccy/go-json

4: https://github.com/vmihailenco/msgpack

5: https://github.com/fxamacker/cbor

--

6: https://github.com/valyala/fasthttp#faq

--

7: https://github.com/tidwall/gjson

8: https://github.com/tidwall/sjson

• jsoniter

  12 13,094 0.0 Go

  A high-performance 100% compatible drop-in replacement of "encoding/json" (by json-iterator)

  

Project mention: Handling high-traffic HTTP requests with JSON payloads | /r/golang | 2023-12-07

Since most of the time would be spent decoding json, you could try to cut this time using https://github.com/bytedance/sonic or https://github.com/json-iterator/go, both are drop-in replacements for the stdlib, sonic is faster.

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• jsonparser

  15 5,358 0.0 Go

  One of the fastest alternative JSON parser for Go that does not require schema

Project mention: Introducing astjson: Transform and Merge JSON Objects with Unmatched Speed in Go | dev.to | 2023-11-29

In this article, I will introduce you to a new package called astjson that I have been working on for the last couple of weeks. It is a Go package that allows you to transform and merge JSON objects with unmatched speed. It is based on the jsonparser package by buger aka Leonid Bugaev and extends it with the ability to transform and merge JSON objects at unparalleled performance.

• easyjson

  10 4,354 2.3 Go

  Fast JSON serializer for golang.

  

• fastjson2

  2 3,442 9.8 Java

  🚄 FASTJSON2 is a Java JSON library with excellent performance.

  

Project mention: FLaNK Stack Weekly for 20 June 2023 | dev.to | 2023-06-20

• Oj

  7 3,102 6.7 C

  Optimized JSON

Project mention: What JSON Serializers are you using with rails ? | /r/rails | 2023-11-29

Hi guys, I know that Hotwire is the sh*t in rails nowadays, but if you were to build an API with rails, which serializer would you use ? I have my eyes on jsonapi-serializer with oj , but I am not sure if that is the best option nowadays. The jsonapi-serializer repo is a bit confusing, regarding which version should I use, same for ActiveModelSerializer to be honest.

• fastjson

  18 2,168 0.0 Go

  Fast JSON parser and validator for Go. No custom structs, no code generation, no reflection (by valyala)

Project mention: What's the best way to unmarshall this nested JSON? | /r/golang | 2023-06-29

I’ve used fastjson when unmarshalling to Structs is inconvenient. https://github.com/valyala/fastjson

• poison

  3 1,996 0.0 Elixir

  An incredibly fast, pure Elixir JSON library

• simplejson

  1 1,634 5.0 Python

  simplejson is a simple, fast, extensible JSON encoder/decoder for Python

  

• jsoniter

  3 1,504 0.0 Java

  jsoniter (json-iterator) is fast and flexible JSON parser available in Java and Go (by json-iterator)

  

• parson

  2 1,307 4.0 C

  Lightweight JSON library written in C.

• xml-js

  2 1,248 0.0 JavaScript

  Converter utility between XML text and Javascript object / JSON text.

• JSON Machine

  4 1,021 5.9 PHP

  Efficient, easy-to-use, and fast PHP JSON stream parser

• spray-json

  2 969 0.0 Scala

  A lightweight, clean and simple JSON implementation in Scala

  

• jsoncons

  3 667 9.9 C++

  A C++, header-only library for constructing JSON and JSON-like data formats, with JSON Pointer, JSON Patch, JSON Schema, JSONPath, JMESPath, CSV, MessagePack, CBOR, BSON, UBJSON

Project mention: Experience using crow as web server | /r/cpp | 2023-11-06

On the other hand, I'd like to bring in the json library of my choice, e.g. https://github.com/nlohmann/json or https://github.com/danielaparker/jsoncons. So I'd prefer the web server library provides as little as possible in the way of Json support, and certainly doesn't get in the way of using my library of choice. Similarly, I'd like to use my choice of automatic object serialization.

• flatcc

  2 618 8.2 C

  FlatBuffers Compiler and Library in C for C

  

• jstream

  1 553 0.0 Go

  Streaming JSON parser for Go

• argonaut

  0 545 8.3 Scala

  Purely functional JSON parser and library in scala.

  

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json-parser related posts

• Tips on adding JSON output to your command line utility. (2021)

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• simdjson: Parsing Gigabytes of JSON per Second

  1 project | news.ycombinator.com | 23 Jan 2024

• Simdjson: Parsing Gigabytes of JSON per Second

  1 project | news.ycombinator.com | 30 Nov 2023

• What JSON Serializers are you using with rails ?

  2 projects | /r/rails | 29 Nov 2023

• Introducing astjson: Transform and Merge JSON Objects with Unmatched Speed in Go

  3 projects | dev.to | 29 Nov 2023
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