Alternatives and similar repositories for portals:

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

• WICG / webpackage
  Web packaging format
  ☆1,242Updated 2 weeks ago
• WICG / kv-storage
  [On hold] A proposal for an async key/value storage API for the web
  ☆551Updated 3 years ago
• GoogleChromeLabs / css-paint-polyfill
  CSS Custom Paint / Paint Worklet polyfill with special browser optimizations.
  ☆747Updated last year
• webcomponents / custom-elements-everywhere
  Custom Element + Framework Interoperability Tests.
  ☆1,230Updated this week
• Rich-Harris / shimport
  Use JavaScript modules in all browsers, including dynamic imports
  ☆1,239Updated 10 months ago
• GoogleChromeLabs / tooling.report
  tooling.report a quick way to determine the best build tool for your next web project, or if tooling migration is worth it, or how to ado…
  ☆852Updated last month
• GoogleChromeLabs / gulliver
  A PWA directory, focusing on collecting PWA best practices and examples.
  ☆549Updated 5 months ago
• GoogleChromeLabs / houdini-samples
  Demos for different Houdini APIs
  ☆977Updated 3 years ago
• WICG / virtual-scroller
  ☆2,002Updated 3 years ago
• GoogleChromeLabs / critters
  🦔 A Webpack plugin to inline your critical CSS and lazy-load the rest.
  ☆3,439Updated 6 months ago
• GoogleChromeLabs / first-input-delay
  A JavaScript library for measuring First Input Delay (FID) in the browser.
  ☆348Updated 4 years ago
• WICG / scheduling-apis
  APIs for scheduling and controlling prioritized tasks.
  ☆923Updated last month
• GoogleChromeLabs / progressive-tooling
  A list of community-built, third-party tools that can be used to improve page performance
  ☆548Updated 2 months ago
• webcomponents / polyfills
  Web Components Polyfills
  ☆1,161Updated 3 weeks ago
• GoogleChromeLabs / clooney
  Clooney is an actor library for the web. Use workers without thinking about workers.
  ☆1,420Updated this week
• babel / preset-modules
  A Babel preset that targets modern browsers by fixing engine bugs (will be merged into preset-env eventually)
  ☆742Updated last year
• bublejs / buble
  ☆871Updated 2 years ago
• GoogleChromeLabs / lighthousebot
  Run Lighthouse in CI, as a web service, using Docker. Pass/Fail GH pull requests.
  ☆2,232Updated 4 years ago
• WICG / background-sync
  A design and spec for ServiceWorker-based background synchronization
  ☆644Updated last year
• webcomponents / custom-elements
  A polyfill for HTML Custom Elements v1
  ☆457Updated 5 years ago
• GoogleChromeLabs / size-plugin
  Track compressed Webpack asset sizes over time.
  ☆1,672Updated last month
• GoogleChrome / web-vitals-extension
  A Chrome extension to measure essential metrics for a healthy site
  ☆2,378Updated 3 months ago
• Polymer / pwa-helpers
  Small helper methods or mixins to help you build web apps.
  ☆438Updated 3 years ago
• GoogleChromeLabs / css-triggers
  A reference for the render impact of mutating CSS properties.
  ☆903Updated 7 years ago
• GoogleChromeLabs / idlize
  Helper classes and methods for implementing the idle-until-urgent pattern
  ☆1,064Updated 2 years ago
• WICG / display-locking
  A repository for the Display Locking spec
  ☆297Updated 2 years ago
• GoogleChromeLabs / progressive-rendering-frameworks-samples
  Samples and demos from the Progressive Rendering I/O talk
  ☆414Updated 2 years ago
• AshleyScirra / via.js
  Write JS code that runs in a different context. E.g. use the DOM in a Web Worker.
  ☆498Updated last year
• GoogleChromeLabs / prerender-loader
  📰 Painless universal pre-rendering for Webpack.
  ☆1,903Updated 3 years ago
• PWA-POLICE / pwa-bugs
  🚔 List of PWA Bugs and workarounds
  ☆475Updated 3 years ago