Life & fun · alternatives · 2026

24 alternatives to See – searchable JSON compression (offline 10-min demo)

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:…

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1. 1
   Searchable compression for JSON – ~99% page skip and sub-ms lookups▲15

   Problem JSON/NDJSON is everywhere in data platforms, but compression usually breaks searchability. You either keep queryable raw stores (high I/O/egress) or compress into gz/zstd blobs (cheap to store, painful to probe). The “cloud tax” shows up as wasted reads. What I built (SEE — Semantic Entropy Encoding) A schema-aware, searchable compression codec for JSON that keeps exists/pos lookups fast while still compressing. Internals: structure-aware delta + dictionaries, a PageDir + mini-index to jump to relevant pages, and a tuned Bloom filter that skips ~99% of pages.…

   2025 · github.com · its alternatives →

2. 2
   uFuzzy.js – A tiny, efficient fuzzy search that doesn't suck▲251

   Hello HN! I became frustrated with the unpredictible/poor match quality and opaqueness of "relevance scores" in existing fuzzy and fulltext search libs, so I tried something different and this is the result. The main selling point is the result quality / ordering, with best-in-class memory overhead and excellent performance being bonuses. The API is pretty stable at this point, but looking for feedback before committing to 1.0. TL;DR The test corpus is a 4MB json file with 162k words/phrases, so give it a second for initial download. You can also drag/drop your own…

   2022 · github.com · its alternatives →

3. 3
   Min.js style compression of tech docs for LLM context▲177

   Min.js Style Compression of Tech Docs for LLM Context - marv1nnnnn/llm-min.txt

   2025 · github.com · its alternatives →

4. 4
   A fast JSON library for Go▲119

   Fast JSON encoder/decoder compatible with encoding/json for Go - goccy/go-json

   2021 · github.com · its alternatives →

5. 5JD
   JSON Dive – A better online JSON viewer▲6

   We've all been there: you have some JSON data you need to make sense of, so you Google "json formatter" and end up at a site ridden with ads. I used to look at at lot of JSON (mostly log data) for $oldjob, so I set out to build something better. I know there are a lot of tools in this space, but I've put a lot of love into JSON Dive: things like Vim keyboard shortcuts to navigate, dark mode, timestamp/image previews, and multi-file-format-support (XML-in-JSON was a format I dealt with in the context of LLMs/tool calls). I've also made an effort to ensure it can handle large files,…

   2025 · jsondive.app · its alternatives →

6. 6
   JSONBason▲15

   I've been at it again, just sharing my simple JSON data inspection tool, love webdev and single page apps, this one took 4 days and was a lot of fun. The code is not obfuscated so you can inspect it and see how it works (very simple, server side is even more simple) Pretty much just do a POST of your JSON data from within your code and it will convert it into a basic table for instant search and sort. Made with love for the fun of it, no ads, no paid anything, it's totally free. Please only send in sanitized/test data only, this is meant to help make webdev a bit easier and more fun.…

   2025 · jsonbason.com · its alternatives →

7. 7
   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 →

8. 8
   A JSON database on the filesystem with indexes▲12

   :man: a simple, git diffable JSON database on yer filesystem. By the power of NodeJS - DO-SAY-GO/sirdb

   2020 · github.com · its alternatives →

9. 9
   Duper – The Format That's Super▲31

   An MIT-licensed human-friendly extension of JSON with quality-of-life improvements (comments, trailing commas, unquoted keys), extra types (tuples, bytes, raw strings), and semantic identifiers (think type annotations). Built in Rust, with bindings for Python and WebAssembly, as well as syntax highlighting in VSCode. I made it for those like me who hand-edit JSONs and want a breath of fresh air. It's at a good enough point that I felt like sharing it, but there's still plenty I wanna work on! Namely, I want to add (real) Node support, make a proper LSP with auto-formatting, and get it out…

   Nov 2025 · duper.dev.br · its alternatives →

10. 10AT
    Anything To JSON – a language model for structured extraction▲18

    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 →

11. 11
    Semantics3's new visual JSON playground▲14

    Data needn’t be dry JSON. Visualize product data in RealTime

    2017 · its alternatives →

12. 12
    Mini_gzip – embeddable, minimal, in-memory Gzip API▲21

    Embeddable minimal in-memory GZIP decompression library for embedded systems - wkoszek/mini_gzip

    2015 · github.com · its alternatives →

13. 13
    fastgron: A JSON to GRON Converter That's 40 Times Faster Than Gron▲23

    Hello HN! I want to introduce fastgron, my new project. fastgron is a JSON to GRON converter, built to be incredibly fast – it's 40 times faster than Gron. GRON is a tool for making JSON greppable, but it can slow down with larger files. With fastgron, even a 200MB JSON file can be converted in just 1 second. Key features include streaming conversion for memory efficiency and an optimized path reconstruction for faster operations. It leverages C++ and the simdjson and fast_io libraries for speed. I welcome all feedback, suggestions, or questions. Thank you!

    2023 · github.com · its alternatives →

14. 14AO
    an order-preserving JSON encoding (so byte-order == value-order)▲7

    2010 · keyjson.org · its alternatives →

15. 15
    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 →

16. 16
    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 →

17. 17
    JSON Minifier: Fast & Secure▲3

    Compress JSON data instantly for faster web performance.

    Feb 2026 · 99tools.net · its alternatives →

18. 18
    OnPair – String compression with fast random access (Rust, C++)▲6

    I’ve been working on a compression algorithm for fast random access to individual strings in large collections. The problem came up when working with large in-memory database columns (emails, URLs, product titles, etc.), where low-latency point queries are essential. With short strings, LZ77-based compressors don’t perform well. Block compression helps, but block size forces a trade-off between ratio and access speed. Some existing options: - BPE: good ratios, but slow and memory-heavy - FSST (discussed here: https://news.ycombinator.com/item?id=41489047): very fast, but…

    2025 · github.com · its alternatives →

19. 19
    Json-knife (update huge JSON string recursively with regex)▲6

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

    2020 · github.com · its alternatives →

20. 20NJ
    Noise – JSON search engine library▲6

    2017 · noisesearch.org · its alternatives →

21. 21
    Streaming JSON in Rust▲7

    Terabytes of JSON, kilobytes of memory

    Jan 2026 · github.com · its alternatives →

22. 22JA
    JSON as Fast as Binary▲12

    2015 · hperadin.github.io · its alternatives →

23. 23
    Jist now searches JSON 17x faster than jq▲7

    Hi HN! Happy to share that jist can now search JSON 17x faster than jq for a provided input (string or a file). The major change is using the bleeding edge simdjson parser as the preferred way of parsing and querying the input. Since simdjson can only work on files up to 4.2GB, jist falls back to its earlier implementation of scanning through input in chunks of 1MB which means it can still query files of virtually infinite size 3x faster than jq ever could while using ~10MB of memory. The next major feature will be summarizing input JSON into a schema - and it will do this by scanning the…

    2025 · github.com · its alternatives →

24. 24
    Jsong: faster than light streaming JSON parser and writer in C▲9

    2017 · github.com · 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 →