Alternatives and similar repositories for extensions:

Users that are interested in extensions are comparing it to the libraries listed below

• SharkPool-SP / SharkPools-Extensions
  SharkPool's Collection of Scratch Extensions made by him and others.           If Vercel is Blocked use: https://sharkpool-sp.github.io/S…
  ☆38Updated this week
• PenguinMod / PenguinMod-ExtensionsGallery
  ☆28Updated last week
• TurboWarp / scratch-gui
  TurboWarp GUI and addons
  ☆118Updated this week
• TheShovel / co-funk
  Friday Night Funkin, with multiplayer
  ☆17Updated 2 weeks ago
• TurboWarp / cloud-server
  Cloud variable server monorepo: Node.js server implementation and protocol documentation
  ☆51Updated 3 weeks ago
• TimMcCool / scratchattach
  Scratch API wrapper with support for almost all site features, cloud requests framework and more
  ☆188Updated this week
• ajskateboarder / scratch-git
  Git integration for Scratch (TurboWarp) that just works
  ☆36Updated last month
• PenguinMod / PenguinMod-Home
  A main dashboard page featuring community projects and featured content.
  ☆31Updated this week
• MikeDev101 / cloudlink
  (Discontinued) A powerful WebSocket extension for Scratch.
  ☆46Updated this week
• TurboWarp / packager
  Converts Scratch projects into HTML files, zip archives, or executable programs for Windows, macOS, and Linux.
  ☆273Updated 3 weeks ago
• jeffalo / ocular
  forum search for scratch
  ☆54Updated 2 months ago
• ScratchAddons / website-v2
  The website for Scratch Addons. (version 2)
  ☆50Updated this week
• jwklong / turbobuilder
  Create extensions for TurboWarp using block-based coding.
  ☆9Updated 7 months ago
• SnarpleDev / Snazzle
  A better frontend for Scratch, built by the community, for the community
  ☆14Updated 3 months ago
• TurboWarp / scratch-vm
  Scratch VM with a JIT compiler and more features
  ☆85Updated 3 weeks ago
• PenguinMod / penguinmod.github.io
  PenguinMod Main Repo that combines the other repos together!
  ☆20Updated this week
• medlans / 2.0-Archives
  Scratch (and other) archives (swfs, dmgs, exes, airs, image files, projects, etc). A lot of these were found on a GD by TBCA (The Block C…
  ☆22Updated 3 months ago
• ScratchAddons / ScratchAddons
  All-in-one browser extension for Scratch.
  ☆743Updated this week
• forkphorus / forkphorus
  JavaScript compiler for Scratch 3, 2, and 1 projects.
  ☆139Updated last month
• FurryR / scratch-ext
  Scaffolding for Javascript/Typescript Scratch extensions.
  ☆11Updated 3 months ago
• TurboWarp / desktop
  A better offline editor for Scratch 3.
  ☆429Updated this week
• EurekaScratch / eureka
  💡 Universal Scratch Extension Loader.
  ☆38Updated this week
• Gandi-IDE / custom-extension
  ☆44Updated last month
• TurboWarp / docs
  Documentation for TurboWarp
  ☆28Updated last month
• JeremyGamer13 / turbobuilder
  Create extensions for TurboWarp using block-based coding.
  ☆17Updated last year
• cloudlink-omega / cl5
  Documentation & Scratch 3 Extension for the CL5 protocol that powers CLΩ.
  ☆10Updated this week
• scratchaddons-community / scradd
  Bot for Scratch Addons Discord server
  ☆16Updated this week
• TurboWarp / mirror
  Mirror on the wall
  ☆8Updated 3 months ago
• CubeyTheCube / scratchclient
  A scratch API wrapper for Python.
  ☆37Updated last year
• 3r1s-s / meo
  Neo + Meower
  ☆9Updated 5 months ago