Life & fun · alternatives · 2026
24 alternatives to Json-knife (update huge JSON string recursively with regex)
An Experimental Regex Engine to Parse and Apply Bulk Changes to a JSON String Without Using 'JSON.parse()' for Deserialization - patternhelloworld/json-knife
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier. Json-knife (update huge JSON string recursively with regex) launched in 2020; newer entries below may have overtaken it.
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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 →
- 2

Outlines is a Python library that focuses on text generation with large language models. Brandon and I are not LLM experts and started the project a few months ago because we wanted to understand better how the generation process works. Our original background is probabilistic, relational and symbolic programming. Recently we came up with a fast way to generate text that matches a regex (https://blog.normalcomputing.ai/posts/2023-07-27-regex-guide...). The basic idea is simple: regular expressions have an equivalent Deterministic-Finite Automaton (DFA) representation. We…
2023 · github.com · its alternatives →
- 3
JSON Sharp▲73Tool for lazy developers to convert JSON to C# Objects
2020 · jsontocsharpconverter.web.app · its alternatives →
- 4AT
Hey HN! Erik here from banana.dev We’ve trained a small(ish) language model on structured extraction, and today we’re launching a playground for it at https://anythingtojson.com. Give it a try! This model continues our work on structured generation, following last week’s launch of Fructose[1], a python client for strongly-typed LLM responses. There seem to be two distinct halves of the problem intended to be solved by Fructose and structured generation: 1. the reasoning ability of the model, such as performing chain of thought, creative acts, and natural language tasks. In a way,…
2024 · anythingtojson.com · its alternatives →
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Answers by Context.devfree tier, from $25/mo▲198Give it a research task + the JSON shape you want back.
Sep 2026 · docs.context.dev · its alternatives →
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JSONverify▲92A web tool that validates and format JSON objects
2021 · jsonverify.com · its alternatives →
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Fast JSON encoder/decoder compatible with encoding/json for Go - goccy/go-json
2021 · github.com · its alternatives →
- 8

Discover and manipulate any JSON document
2021 · chromewebstore.google.com · its alternatives →
- 9

Yehuda's start as a programmer and the spec for building API
2016 · changelog.com · its alternatives →
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JSON Master▲82Format, repair, convert, and visualize JSON, XML, YAML, CSV, and TOML. Free developer platform with advanced visualizers and AI-powered syntax repair.
2020 · jsonmaster.com · its alternatives →
- 11JA
a lightweight dependency free javascript micro-library for making collapsable trees with JSON
2017 · maxleiter.github.io · its alternatives →
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the JS/Node.JS library for encoding complex and unconventional data structures. Support for BigInts, TypedArrays, null, undefined, and Symbol. Multiple flavors available. - DO-SAY-GO/WeirdJSON
2020 · github.com · its alternatives →
- 13IM
2024 · prakhar897.github.io · its alternatives →
- 14

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.
2025 · aha.io · its alternatives →
- 15

A lightweight vanilla Javascript micro-library for making collapsible trees with JSON - MaxLeiter/jsonTree
2016 · github.com · its alternatives →
- 16

JSON parser that supports self reference and comments - serkanyersen/jsonplus
2015 · github.com · its alternatives →
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Weird JSON▲19the JS/Node.JS library for encoding complex and unconventional data structures. Support for BigInts, TypedArrays, null, undefined, and Symbol. Multiple flavors available. - DO-SAY-GO/WeirdJSON
2022 · github.com · its alternatives →
- 18KA
Kata : Javascript JSON templating engine
2014 · smcmurray.github.io · its alternatives →
- 19

jsoncompat: json schema compatibility checker
Apr 2026 · jsoncompat.com · its alternatives →
- 20

First time ever working on something like this, check it out
2024 · github.com · its alternatives →
- 21

A fast, modern and low-memory approach to processing a big JSON - jankdc/bote
Jun 2026 · github.com · its alternatives →
- 22

Hi HN, I’m building SEE (Semantic Entropy Encoding): a searchable compression format for JSON/NDJSON. Goal: reduce the “data tax” (storage/egress) and “CPU tax” (decompress/parse) by keeping JSON searchable while compressed, with page-level random access. I just published a proof-first evaluation release: Offline DEMO ZIP (~10 min): prints compression ratios + skip rates + lookup latency (p50/p95/p99) DD pack: audit/repro evidence (decode mismatch=0, extended mismatch=0, audit PASS) Latest release:…
Feb 2026 · gitlab.com · its alternatives →
- 23

30 free developer tools. No ads, no signup, no BS.
Feb 2026 · tools.shanecode.org · its alternatives →
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2017 · github.com · its alternatives →
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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 →