JavaScript Web3

Open-source JavaScript projects categorized as Web3

Top 23 JavaScript Web3 Projects

  1. gun

    An open source cybersecurity protocol for syncing decentralized graph data.

    Project mention: Gun: An Ecosystem of Tools for Distributed Applications | dev.to | 2026-02-16

    Documentation

  2. SaaSHub

    SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

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  3. melonJS

    a modern & lightweight HTML5 game engine

  4. project_web3.0

    This is a code repository for the corresponding video tutorial. In this video, we're going to build a Web 3.0 React Solidity Blockchain Application

  5. eattheblocks

    Source code for Eat The Blocks, a screencast for Ethereum Dapp Developers

  6. alphabiz

    Web3 YouTube Alternative - fully decentralized media platform and blockchain-based marketplace

  7. frame

    System-wide Web3 for macOS, Windows and Linux

  8. eth-crypto

    Cryptographic javascript-functions for ethereum and tutorials to use them with web3js and solidity

  9. awesome-web3

    A curated list of awesome Web3 resources, libraries, tools and more.

  10. web3-is-going-great

    A timeline of some of the greatest hits in cryptocurrencies, NFTs, and other web3 projects since the beginning of 2021

    Project mention: Mexican government breached by solo user with Claude, 150 GB exfiltrated | news.ycombinator.com | 2026-05-18

    [9] M. White, "Web3 Is Going Just Great," web3isgoinggreat.com. (Cumulative loss tracker, broader scope including exchange and protocol collapses.) [Online]. Available: https://web3isgoinggreat.com

  11. etherchain-light

    Lightweight Ethereum blockchain explorer

  12. ethora

    SDK monorepo for Ethora chat / messaging platform. (1) Pick an SDK for your frontend stack. (2) Integrate manually or using ethora-setup. (3) Optionally configure app settings, deploy AI agents etc. Server: ethora.com cloud [free]. Dedicated server + SLA option for enterprise customers.

  13. Goopt

    🔍 Search Engine for a Procedural Simulation of the Web with GPT-3.

  14. ztm

    ZTM (Zero Trust Mesh) is a privacy-first open-source decentralized end-to-end encrypted software defined network, based on HTTP/2 tunnels. Experience boundless connectivity and mesh the globe!

    Project mention: ZTM: Privacy-first P2P solution for OpenClaw and local LLMs | news.ycombinator.com | 2026-02-16
  15. defi-minimal

    This repo is dedicated to making minimal repos of existing defi primatives.

  16. eth-sdk

    Type-safe, lightweight SDKs for Ethereum smart contracts

  17. web3-vs-ethers

    A basic cheatsheet of Web3.js vs Ethers (along w/ example apps!)

  18. hyperfy

    World building for everyone

  19. flux

    Flux, Your Gateway to a Decentralized World. https://home.runonflux.io https://api.runonflux.io https://docs.runonflux.io https://source.runonflux.io https://wiki.runonflux.io (by RunOnFlux)

  20. TokenScript

    TokenScript schema, specs and paper

  21. dagger.js

    Simple library to connect with dagger server and manage subscriptions for Ethereum Blockchain.

  22. weavedb

    Decentralized Database as a Protocol

  23. HSTP

    New Internet

  24. origin-dollar

    OUSD and OETH are stablecoins that passively accrue yield while you are holding it

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).

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JavaScript Web3 related posts

  • FBI: Americans lost a record $21B to cybercrime last year

    1 project | news.ycombinator.com | 8 Apr 2026
  • Building a P2P Collaborative Whiteboard with GenosDB in a Single HTML File

    1 project | dev.to | 17 Feb 2026
  • ZTM: Privacy-first P2P solution for OpenClaw and local LLMs

    1 project | news.ycombinator.com | 16 Feb 2026
  • E: An all in one webapp built using React.js

    1 project | news.ycombinator.com | 14 Dec 2025
  • Introducing GenosDB: a P2P Graph Database with Built-In Zero-Trust Security

    1 project | dev.to | 14 Oct 2025
  • The Dying Dream of a Decentralized Web

    6 projects | news.ycombinator.com | 9 Sep 2025
  • A zero trust framework for MCP based AI Agent development

    1 project | news.ycombinator.com | 28 Jun 2025
  • A note from our sponsor - SaaSHub
    www.saashub.com | 13 Jun 2026
    SaaSHub helps you find the best software and product alternatives Learn more →

Index

What are some of the best open-source Web3 projects in JavaScript? This list will help you:

# Project Stars
1 gun 19,054
2 melonJS 6,311
3 project_web3.0 4,256
4 eattheblocks 3,989
5 alphabiz 1,215
6 frame 1,185
7 eth-crypto 916
8 awesome-web3 867
9 web3-is-going-great 822
10 etherchain-light 669
11 ethora 536
12 Goopt 519
13 ztm 501
14 defi-minimal 495
15 eth-sdk 430
16 web3-vs-ethers 373
17 hyperfy 293
18 flux 249
19 TokenScript 249
20 dagger.js 221
21 weavedb 209
22 HSTP 156
23 origin-dollar 149

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