Life & fun · alternatives · 2026

24 alternatives to A lightweight JSON Parser without memory allocation in ~250 LOC

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. A lightweight JSON Parser without memory allocation in ~250 LOC launched in 2014; newer entries below may have overtaken it.

1. 1JA
   jq, a lightweight commandline JSON processor▲5

   2012 · stedolan.github.com · its alternatives →

2. 2
   Jsong: faster than light streaming JSON parser and writer in C▲9

   2017 · github.com · its alternatives →

3. 3AS
   A Super Simple JSON CMS▲8

   2018 · medium.com · its alternatives →

4. 4
   The Changelog - #189: JSON API with Yehuda Katz▲66

   Yehuda's start as a programmer and the spec for building API

   2016 · changelog.com · its alternatives →

5. 5BJ
   Bitwise JSON Parser written in C▲6

   2014 · web.cs.dal.ca · its alternatives →

6. 6
   A Fast, Malloc-Free C++14 Json Parser and Encoder▲98

   Meta programming utilities for C++14. Merged in matt-42/lithium - matt-42/iod

   2014 · github.com · its alternatives →

7. 7
   Semi-index - Speed up JSON parsing in MapReduce-like tasks▲9

   Implementation of the JSON semi-index described in the paper "Semi-Indexing Semi-Structured Data in Tiny Space" - ot/semi_index

   2011 · github.com · its alternatives →

8. 8AO
   an order-preserving JSON encoding (so byte-order == value-order)▲7

   2010 · keyjson.org · its alternatives →

9. 9
   The Simplest ML API▲7

   2021 · doc.clickup.com · its alternatives →

10. 10
    bote - A fast, modern and low-memory approach to processing a big JSON▲5

    A fast, modern and low-memory approach to processing a big JSON - jankdc/bote

    Jun 2026 · github.com · its alternatives →

11. 11AP
    A privacy-focused JSON pretty printer▲8

    2018 · nicejson.com · its alternatives →

12. 12
    JsonTree, a tool for turning JSON data into a collapsible html tree▲9

    A lightweight vanilla Javascript micro-library for making collapsible trees with JSON - MaxLeiter/jsonTree

    2016 · github.com · its alternatives →

13. 13
    JSON Parser▲8

    Awesome way to view JSON.

    2018 · jsonformatter.org · its alternatives →

14. 14
    The fastest JSON parser for Go▲7

    THE fastest alternative JSON parser for Go that does not require schema - buger/jsonparser

    Jul 2026 · github.com · its alternatives →

15. 15NJ
    Noise – JSON search engine library▲6

    2017 · noisesearch.org · its alternatives →

16. 16PT
    Piglet, the fluent parser▲8

    2012 · binarysculpting.com · its alternatives →

17. 17CA
    Choral, a Java-compatible language for type-safe multiparty protocols▲7

    2020 · choral-lang.org · its alternatives →

18. 18AJ
    A JSON Viewer with indentation based highlighting, and table-view mode▲9

    2018 · json-viewer.sohamkamani.com · its alternatives →

19. 19JE
    JSON Editor for macOS▲5

    2022 · theapiscout.com · its alternatives →

20. 20
    Incremental JSON parser for streaming LLM tool calls in Ruby▲13

    Built this for streaming AI tool calls. LLMs stream function arguments as JSON character-by-character. Most parsers reparse from scratch each time - O(n²) behavior that causes UI lag. This maintains parsing state, processing only new characters. True O(n) performance that stays imperceptible throughout the entire response. Ruby gem, MIT licensed. Would love feedback.

    Oct 2025 · aha.io · its alternatives →

21. 21
    JSONPlus: a json parser with self reference and templating▲7

    JSON parser that supports self reference and comments - serkanyersen/jsonplus

    2015 · github.com · its alternatives →

22. 22
    Bulk set properties recursively in complex JSON string trees▲8

    An Experimental Regex Engine to Parse and Apply Bulk Changes to a JSON String Without Using 'JSON.parse()' for Deserialization - patternhelloworld/json-knife

    2022 · github.com · its alternatives →

23. 23TI
    T0.io – A simple url shortener▲6

    2016 · t0.io · its alternatives →

24. 24TJ
    The JSON processor jq running in the browser with emscripten▲8

    2017 · fiatjaf.alhur.es · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →