Bower   defunct

bower.io

A package manager for the web

Gulp    

gulpjs.com

The streaming build system • Support us at https://opencollective.com/gulpjs 

Helm    

helm.sh

The Package Manager for @kubernetesio, now a #CNCF graduated project. Check out Helm V3 now!

Release Butler    

releasebutler.now.sh

Twitter bot that helps you stay up to date with releases of frontend frameworks & libraries! #angular #react #vue #rxjs #typescript #webpack by @tomastrajan

LuaRocks    

luarocks.org

A website for hosting Lua modules. Twitter account run by @moonscript

Yarn    

yarnpkg.com

pip  

pypi.org

Atom Package Manager  

github.com

Webpack  

webpack.js.org

WebAssembly  

webassembly.org

VCPKG  

github.com

SwiftPM  

swift.org

Snappy aka Snapcraft  

snapcraft.io

SDKMAN  

sdkman.io

Scoop Installer  

scoop.sh

Rollup  

rollupjs.org

Browserify  

browserify.org

Pundle  

Free Pascal  

freepascal.org

Parceljs  

parceljs.org

npm  

npmjs.com

Metro Bundler  

facebook.github.io

MacPorts  

macports.org

Chocolatey  

chocolatey.org

Lerna  

lernajs.io

Homebrew  

brew.sh

Clang  

clang.llvm.org

Composer  

getcomposer.org

Grunt  

gruntjs.com

Go Version Manager  

github.com