Dev tools · alternatives · 2026

24 alternatives to Running UglifyJS 2.5 times faster (GitHub.com)

proof-of-concept for LiteScript compile-to-c functionality. Uglify2JS code translated to LiteScript, then compiled-to-c. Result: parser is 2.5 times faster - GitHub - luciotato/UglifyLS: proof-of-concept for LiteScript compile-to-c functionality. Uglify2JS code translated to LiteScript, then compile

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Running UglifyJS 2.5 times faster (GitHub.com) launched in 2014; newer entries below may have overtaken it.

1. 1
   Fast.js – faster reimplementations of native JavaScript functions▲323

   Faster user-land reimplementations for several common builtin native JavaScript functions. - codemix/fast.js

   2014 · github.com · its alternatives →

2. 2
   Faster.js – a micro-optimizing JavaScript compiler▲89

   faster.js is a Babel plugin that compiles idiomatic Javascript to faster, micro-optimized Javascript. - vzhou842/faster.js

   2018 · github.com · its alternatives →

3. 3
   Automated algorithm translation for Python, C++, C#, JS▲142

   transpile algorithms/libs to idiomatic JS, Go, C#, Ruby - GitHub - pseudo-lang/pseudo: transpile algorithms/libs to idiomatic JS, Go, C#, Ruby

   2016 · github.com · its alternatives →

4. 4
   ScrapScript – A tiny functional language for sharable software▲503

   Hi friends, I started casually working on scrapscript in 2015. I built a few compilers over the years to test out various ideas/implementations, and I think I'm finally happy with the overall design. The code is not public yet. Email me at [email protected] if you're interested in joining the core team later this year. Let me know if you have any questions or feedback :)

   2023 · scrapscript.org · its alternatives →

5. 5
   Fast C-based HTML 5 parsing for Python▲169

   Fast C based HTML 5 parsing for python. Contribute to kovidgoyal/html5-parser development by creating an account on GitHub.

   2017 · github.com · its alternatives →

6. 6
   uDSV.js – A faster CSV parser▲67

   Hey folks! I know CSV parsers (especially in JS) aren't terribly exciting and someone writes a "better" one every week. I'm in the middle of my parental leave, and this was a project that came out of me looking for the fastest/smallest CSV parser. It all started so innocently, and then turned into a benchmark-validation-athon; the library itself took ~2 weeks to write, but the performance comparisons took another ~4 weeks (on and off). The benchmarks were a huge effort, but I think they are the most thorough to date, both in breadth and in depth, so hopefully you find them useful:…

   2023 · github.com · its alternatives →

7. 7
   uWrap.js – A faster and more accurate text wrapping util in < 2KB▲121

   A 10x faster and more accurate text wrapping util in < 2KB (min) - leeoniya/uWrap

   2025 · github.com · its alternatives →

8. 8
   Fast 2kB date library alternative to Moment.js with the same API▲122

   ⏰ Day.js 2kB immutable date-time library alternative to Moment.js with the same modern API - iamkun/dayjs

   2018 · github.com · its alternatives →

9. 9
   uFuzzy.js – A tiny, efficient fuzzy search that doesn't suck▲251

   Hello HN! I became frustrated with the unpredictible&#x2F;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 &#x2F; 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&#x2F;phrases, so give it a second for initial download. You can also drag&#x2F;drop your own…

   2022 · github.com · its alternatives →

10. 10
    A work-in-progress C compiler from scratch▲159

    Programming language that compiles into a x86 ELF executable. - riicchhaarrd/ocean

    2021 · github.com · its alternatives →

11. 11
    I made a Clojure-like language in Go, boots in 7ms▲292

    Let-go is a Clojure-like language (~90% compatible with JVM Clojure) written in pure Go. It ships as a ~10MB static binary and cold boots in ~7ms - that's about 50x faster than JVM and 3x faster than Babashka. It has decent throughput on algorithmic workloads - within ballpark of the GraalVM-backed sci. I started this project in 2021 as an elaborate practical joke: I wanted to have an excuse for writing Clojure while pretending to write Go. Jokes aside, it turned out to be pretty decent: it feels like real Clojure, it has an nREPL server (supported in Calva, CIDER, etc.), it's easily…

    May 2026 · github.com · its alternatives →

12. 12
    CLJS Fiddle – ClojureScript▲82

    A private, browser-only ClojureScript playground powered by the self-hosted compiler.

    2016 · cljsfiddle.com · its alternatives →

13. 13
    Prometeo – a Python-to-C transpiler for high-performance computing▲166

    An experimental Python-to-C transpiler and domain specific language for embedded high-performance computing - zanellia/prometeo

    2021 · github.com · its alternatives →

14. 14
    Compile-time HTML parsing in C++14▲175

    A C++ HTML template engine that uses compile time HTML parsing - rep-movsd/see-phit

    2017 · github.com · its alternatives →

15. 15L
    LiteScript▲76

    2014 · luciotato.github.io · its alternatives →

16. 16
    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 →

17. 17
    Goboscript, text-based programming language, compiles to Scratch▲162

    goboscript is a text-based programming language which compiles to Scratch. It allows you to write Scratch projects in text, and compile it into a .sb3 file - which can be opened in the Scratch editor, TurboWarp or be uploaded to the Scratch website. goboscript allows you to create advanced Scratch projects with ease, you can use any text editor, use a version control system such as git. You can refactor your code using search and replace. Text code can be copy pasted, which allows you to easily reuse code or share it with others. goboscript syntax is concise and easy to read. goboscript…

    2025 · github.com · its alternatives →

18. 18
    Sucrase, 20x faster smaller-scoped alternative to Babel▲88

    Super-fast alternative to Babel for when you can target modern JS runtimes - alangpierce/sucrase

    2018 · github.com · its alternatives →

19. 19AS
    A stab at building my own string diffing library▲29

    Took a stab at building my own string diffing JS package. I built an interactive demo for TypeIt’s website (https:&#x2F;&#x2F;typeitjs.com&#x2F;build-your-own) a while back. The approach I took to handle user input necessitated a way to calculate the difference between the versions of a user’s text input. I searched around for a package to help me out and found a couple of good ones (like fast-diff), but I either didn’t really like their API or didn’t want to take on a huge new dependency. Instead, I thought I’d give it a shot myself (famous last words). I dove into it having no real formal…

    2022 · its alternatives →

20. 20
    Lowdefy – Build internal tools with YAML on an open-source framework▲107

    We're excited to announce Lowdefy V4, a full-stack web framework built on top of Next.js that simplifies building web applications, internal tools, admin panels, BI dashboards, and CRUD apps using YAML or JSON configuration files. New in V4: Next.js: Lowdefy now runs on top of the Next.js framework. All of Auth.js: App auth is now handled by Auth.js supported providers, adapters and callbacks and events, easy to configure, but all of which can be customized. Plugin extensibility: Apps can now be extended with any npm or pnpm workspace plugins. Our story: We have developed a simple…

    2021 · lowdefy.com · its alternatives →

21. 21IM
    I made React with a faster Virtual DOM▲109

    Hi! I made a React compatibility library for a Virtual DOM library (https:&#x2F;&#x2F;github.com&#x2F;aidenybai&#x2F;million). The idea is to have much faster rendering (a compiler optimizes virtual DOM beforehand) while ensuring the same developer experience React provides. This is very, VERY early stage, so be prepared for weird bugs &#x2F; plugin incompatibility &#x2F; etc. If you have any suggestions, I'd be more than happy if you replied in a comment with it! You can spin up the demo here >> https:&#x2F;&#x2F;stackblitz.com&#x2F;github&#x2F;aidenybai&#x2F;million-react-compat

    2022 · its alternatives →

22. 22SA
    Sparser – A Multilanguage Parser▲65

    * https:&#x2F;&#x2F;sparser.io * https:&#x2F;&#x2F;github.com&#x2F;Unibeautify&#x2F;sparser This is my attempt at creating a universal language parser. It attempts to solve a couple of problems: * Support multiple languages * Recursively extend support to languages embedded within other languages * Output a uniform format for all supported languages This is a personal project so any feedback would be helpful. Something interesting I found after I built it is that this parser is not as fast to write output as many other JavaScript parsers, but its output is much faster to read from due to the…

    2019 · its alternatives →

23. 23IW
    I wrote a .NET to JS compiler. Here's an XNA demo compiled to JS.▲103

    2011 · hildr.luminance.org · its alternatives →

24. 24
    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 →

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 →