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Prettier
Prettier is an opinionated code formatter.
Backers:
AMP Project ($2,500 since Jun 2021). Also: Frontend Masters ($11K), Shogun Labs, Inc.  ($1K), InVision AG ($1K) and 7 others
Yearly budget: $27,520 USD
ESLint
The pluggable linting utility for JavaScript and JSX
Used in:
amphtml, ampbench, error-tracker and 6 others
Backers:
AMP Project ($20,000 since Jun 2021). Also: Github Sponsors ($27K), Shopify ($21K), Automattic ($20K) and 7 others
Yearly budget: $146,397 USD
89% progress to reach their next goal:
Amount to sustain ESLint for the foreseeable future
Babel
Babel is the community maintained compiler for evolving the future of JavaScript
Used in:
amphtml, worker-dom, amp-github-apps and 3 others
Backers:
AMP Project ($73,600 since Jun 2021). Also: Handshake ($100K), trivago ($48K), Frontend Masters ($33K) and 7 others
Yearly budget: $255,680 USD
44% progress to reach their next goal:
3 maintainers
Rollup
The JavaScript module bundler
Backers:
Aragon ($3K), Oasis Digital Solutions Inc. ($2K), Frontend Masters ($2K) and 7 others
Yearly budget: $9,430 USD
Sindre Sorhus
Full-Time Open-Sourcerer
Backers:
Retool ($7K), GatsbyJS ($5K), Strapi ($3K) and 7 others
Yearly budget: $30,807 USD
Jest
🃏Delightful JavaScript Testing
Used in:
amphtml, remapping, amp-email-viewer and 2 others
Backers:
Frontend Masters ($6K), Principal Financial Group ($2K), Bugsnag Stability Monitoring ($2K) and 7 others
Yearly budget: $9,295 USD
Mocha
simple, flexible, fun javascript test framework for node.js & the browser.
Used in:
amphtml, error-tracker, animations and 2 others
Backers:
clay ($22K), Icons8: free icons, photos, illustrations, and music ($10K), Localize ($9K) and 7 others
Yearly budget: $18,894 USD
AVA
Fast and concurrent JavaScript test runner with simple test syntax and Babel built-in.
Backers:
De Voorhoede ($700), Triplebyte ($149), Datawrapper ($130) and 3 others
Yearly budget: $189 USD
Chai
Chai is a BDD / TDD assertion library for node and the browser that can be delightfully paired with any javascript testing framework.
Used in:
amphtml, error-tracker, animations and 1 other
Backers:
Principal Financial Group ($2K), CodePilot.ai ($250), Metabolize ($84) and 7 others
Yearly budget: $1,500 USD
Husky
Modern native Git hooks made easy 🐶 woof!
Backers:
Padlet ($1000), Skyscanner ($928), GitKraken ($800) and 7 others
Yearly budget: $5,712 USD
lint-staged
improve developer experience and code quality for teams
Backers:
Skyscanner ($928), Easy Agile ($500), Tripwire, Inc. ($30) and 2 others
Yearly budget: $2,310 USD
sinon
We provide the most widely used stubbing library for JavaScript with ~3M weekly downloads
Used in:
amphtml, error-tracker, worker-dom and 1 other
Backers:
BitMEX ($2K), Mixmax ($2K), BuySellAds ($2K) and 7 others
Yearly budget: $5,679 USD
Express
At least one person (or organization) already pledged to this project on Open Collective. You can add your pledge. This will incentivize them to start collecting money to fund their activities.
Ajv
The fastest JSON Schema Validator. Supports draft-04/06/07/2019-09/2020-12
Backers:
Cybozu, Inc. ($5K), Stoplight ($900), Lantagarnas AB (svb) ($100) and 5 others
Yearly budget: $4,912 USD
14% progress to reach their next goal:
Ajv: long term support and development
gulp
A toolkit to automate & enhance your workflow
Backers:
Vertigo Studio SRL ($4K), Sticker Mule ($4K), Frontend Masters ($4K) and 7 others
Yearly budget: $10,139 USD
Preact
3kb alternative to React with the same ES6 API.
Backers:
AMP Project ($53,000 since Jun 2021). Also: trivago ($24K), Github Sponsors ($8K), Webflow ($7K) and 7 others
Yearly budget: $59,187 USD
webpack
webpack is THE build solution for modern web applications.
Used in:
amp-sw, cdn-worker
Backers:
trivago ($390K), AG Grid ($120K), Frontend Masters ($39K) and 7 others
Yearly budget: $306,753 USD
33% progress to reach their next goal:
50% Payouts
Eleventy
A simpler static site generator.
Backers:
Sanity.io ($8K), Piccalilli ($5K), Touchless ($1K) and 7 others
Yearly budget: $23,878 USD
bowser
a browser detector
Backers:
Avocadatoria ($150)
Yearly budget: $38 USD
cheerio
Fast, flexible, and lean implementation of core jQuery designed specifically for the server
Used in:
ampbench
Backers:
Algolia ($2K), Github Sponsors ($802), VPNGorilla.com ($600) and 7 others
Yearly budget: $10,128 USD
cssnano
A modular minifier, built on top of the PostCSS ecosystem.
Used in:
amphtml
Backers:
De Voorhoede ($700), BuySellAds ($117), Software Ventures Limited ($48) and 1 other
Yearly budget: $166 USD
date-fns
Modern JavaScript date utility library
Used in:
amphtml
Backers:
TrueCar ($5K), 1Password ($3K), Aon Cyber Solutions ($2K) and 7 others
Yearly budget: $37,448 USD
69% progress to reach their next goal:
Part-time job
JSS
JSS is an authoring tool for CSS which uses JavaScript as a host language.
Used in:
amphtml
Backers:
CodeFund ($981), Modern Treasury ($700), BuySellAds ($262) and 7 others
Yearly budget: $1,166 USD
20% progress to reach their next goal:
Maintenance Cost
karma-typescript
We are on a mission to simplify unit testing Typescript applications!
Used in:
animations
Lodash
At least one person (or organization) already pledged to this project on Open Collective. You can add your pledge. This will incentivize them to start collecting money to fund their activities.
Moment.js
Used in:
amphtml
At least one person (or organization) already pledged to this project on Open Collective. You can add your pledge. This will incentivize them to start collecting money to fund their activities.
nock
HTTP mocking and expectations library for Node.js
Used in:
error-tracker
Backers:
Third Iron ($124), CodeFund ($48), Metabolize ($34) and 7 others
Yearly budget: $188 USD
58% progress to reach their next goal:
Accountable Community Management
nodemon
Nodemon is a utility that will monitor for any changes in your source and automatically restart your server. Perfect for rapid development.
Used in:
ampbench
Backers:
Mixmax ($1K), Skyscanner ($928), Top Rated Casino Sites ($700) and 7 others
Yearly budget: $15,145 USD
PHPStan
Finding bugs in your code without writing tests.
Used in:
amp-wp
Yearly budget: $0 USD
Polka
A micro web server so fast, it'll make you dance! 👯‍♀️
Used in:
worker-dom
Yearly budget: $5 USD
PostHTML
PostHTML is a tool to transform HTML/XML with JS plugins
Used in:
amphtml
Yearly budget: $19 USD
react-day-picker
Help us on our mission to deliver the best day picker package for react!
Used in:
amphtml
Storybook
The development environment you'll love to use
Backers:
AMP Project ($8,000 since Jun 2021). Also: Applitools: AI-powered Visual Testing and Monitoring  ($6K), Frontend Masters ($5K), Chromatic ($5K) and 7 others
Yearly budget: $39,016 USD
Terser
The fast and efficient minifier for modern JavaScript
Used in:
amphtml
Backers:
JS Kongress Munich ($10K), Algolia ($51), Dedicated Stars ($5)
Yearly budget: $16,562 USD
karma
To our knowledge, this project is not on Open Collective or other funding platform. You can create a pledge. This will incentivize them to start collecting money to fund their activities.
enzyme
Used in:
amphtml
To our knowledge, this project is not on Open Collective or other funding platform. You can create a pledge. This will incentivize them to start collecting money to fund their activities.
istanbul
Used in:
amphtml
To our knowledge, this project is not on Open Collective or other funding platform. You can create a pledge. This will incentivize them to start collecting money to fund their activities.