A grand list of resources and tools related to web/app development, business and startups.

App builders

Too lazy to learn how to code or too cheap to pay for someone to do it for you? There are some options.

AppGyver
Adalo
AppMachine

Colors & patterns

Tools and resources on figuring out color palettes and finding patterns.

Colourlovers - A creative community where people from around the world create and share colors, palettes and patterns.
Coolors - Easy and fast color schemes generator.
Subtle Patterns - Yet another pattern library for your projects.
The Pattern Library - This project compiles patterns created by designers for use in your projects.
Gradient Animator - Create CSS gradients easily.

Domain / namecheck tools

Wordsafety - Check a name for unwanted meanings in foreign languages
Domainr - Instantly check if a domain is available.
Namechk - Quickly check a name across multiple services.

Ember plugins / resources

A bunch of the best resources and plugins we are using for Emberjs.

Ember Power Calendar - Powerful and customizable calendar component for Ember.
Ember Flatpickr - Implements the Flatpickr calendar for Ember.
Ember Testing Tips - A good article on how to do testing in Ember.
Ember Cli Notifications - A notifications system for Ember.
Ember Gestures - Handle gestures in Ember apps nicely.
Vertical Collection - Infinite Scroll and Occlusion at > 60FPS for Ember.
Ember In Viewport - Detect if an Ember View or Component is in the viewport @ 60FPS.
Ember Cli Clipboard - Copy text to clipboard.
Ember Cli Geo - Integrating HTML5 Geolocation API into your Ember.js web app.
Ember Cli Swiper - A nice swiper component for your apps.
Ember Concurrency - Ember Addon that makes it easy to write concise, robust, and beautiful asynchronous code.
Ember Animated - Core animation primitives for Ember
Ember CP Validations - Ember computed property based validations
Ember Cli Bundle Analyzer - Analyze and visually show the size and contents of your Ember app's bundles.

Escape Google / Privacy

Google removed "Don't be evil" clause from their code of conduct and got 200% more evil. Here are some alternatives to Google stuff and generally avoid tracking. Because privacy matters.

Sovereign - Run your own infrastructure for email, file sharing and what not.
Fastmail - Alternative email provider for Gmail.
PrivacyTools - PrivacyTools provides services, tools and knowledge to protect your privacy against global mass surveillance.
Prismbreak - Opt out of global data surveillance programs like PRISM, XKeyscore and Tempora.
Syncthing - Syncthing is a continuous file synchronization program aka. open source dropbox.

Fonts & Typography

Resources related to fonts an typography.

Typ - Find fonts that go together
http://practicaltypography.com/
https://www.cssfontstack.com/
https://www.pierrickcalvez.com/journal/a-five-minutes-guide-to-better-typography
Closest font - Find closest font

Inspiration sources

Resources for UI/design inspiration.

https://dribbble.com
http://www.goodweb.design/
https://niice.co/
https://www.pinterest.com/timoa/mobile-ui-splashscreens/
http://www.mobilemozaic.com/splash-screens.html
http://www.pttrns.com/
http://www.awwwards.com/30-recent-inspirational-ui-examples-in-mobile-device-screens.html
http://littlebigdetails.com/

JavaScript guides

AirBnb JavaScript Style Guide - AirBnbs famous JavaScript style guide.
Modern JS Cheatsheet - Cheatsheet for the JavaScript knowledge you will frequently encounter in modern projects.
Clean Code JavaScript - Software engineering principles, from Robert C. Martin's book Clean Code, adapted for JavaScript.

JavaScript libs / resources

GarlicJS - Persist form state in localStorage to prevent those oopsie moments where user loses text.
GridStack - Build interactive dashboards in minutes. Requires jQuery.
Faker.js - Generate massive amounts of realistic fake data in Node.js and the browser.
Awesome Node.js - A huge list of delightful Node.js packages and resources.
Sifter - A library for textually searching arrays and hashes of objects by property (or multiple properties). Designed specifically for autocomplete.
Chardin.js - Simple overlay instructions for your apps.
Leaflet - JavaScript library for mobile-friendly interactive maps.

UI components
noUiSlider - noUiSlider is a lightweight JavaScript range slider library with full multi-touch support. It fits wonderfully in responsive designs and has no dependencies.
Timesheet.js - JavaScript library for HTML5 & CSS3 time sheets.
nProgress - Slim progress bars for Ajax'y applications. Inspired by Google, YouTube, and Medium.

Date/time
Moment - Parse, validate, manipulate, and display dates in javascript.
CLNDR - a jQuery calendar plugin that uses HTML templates.
Pickadate - The mobile-friendly, responsive, and lightweight jQuery date & time input picker.
Kalendae - A javascript date picker that just works.

File
Filesize.js - JavaScript library to generate a human readable String describing the file size.
jQuery File Upload - File Upload widget with multiple file selection, drag&drop support, progress bar, validation and preview images, audio and video for jQuery.
Dropzone - Dropzone is an easy to use drag'n'drop library. It supports image previews and shows nice progress bars.

Images
lazysizes - High performance and SEO friendly lazy loader for images (responsive and normal), iframes and more, that detects any visibility changes triggered through user interaction, CSS or JavaScript without configuration.
Intense Images - A simple library to view large images up close using simple mouse interaction, and the full screen.
Photoswipe - JavaScript image gallery for mobile and desktop, modular, framework independent.
Galleria - Another JavaScript Image Gallery.

Mouse/touch/keyboard
Dragula - Drag and drop so simple it hurts.
Hammer.js - A javascript library for multi-touch gestures.
Mousetrap - Simple library for handling keyboard shortcuts in Javascript.
Cleave.js - Format input text content when you are typing.
Draggable - The JavaScript Drag & Drop library your grandparents warned you about.

Visualisation
D3 - Bring data to life with SVG, Canvas and HTML.
C3 - A D3-based reusable chart library.
Raphaël - Raphaël is a small JavaScript library that should simplify your work with vector graphics on the web.
SVG.js - The lightweight library for manipulating and animating SVG.

Photos/mockups/illustrations/videos

Resources for finding those juicy free resources for boostrapping your startup idea.

https://visualhunt.com/
http://thestocks.im/
https://www.mockupworld.co/ - mockups
http://unsplash.com/
http://compfight.com/
http://littlevisuals.co/
http://picjumbo.com/
http://www.gratisography.com/
http://getrefe.tumblr.com/
http://splitshire.com/
http://www.morguefile.com/
http://www.freepik.com/
http://all-free-download.com/free-photos
http://pixabay.com/
http://jeshoots.com/
http://nos.twnsnd.co/
http://moveast.me/
http://www.lifeofpix.com/
http://www.kaboompics.com/
http://www.designerspics.com/
http://startupstockphotos.com/
http://skitterphoto.com/
http://jaymantri.com/
http://snapwiresnaps.tumblr.com/
http://www.sitebuilderreport.com/stock-up
http://isorepublic.com/
https://www.pexels.com/
http://coverr.co/ - coverwideos for website

Open source example web/mobile apps

It can be valuable to take a peek at other apps how they've done things.

Realworld - The mother of all demo apps" — Exemplary fullstack Medium.com clone powered by React, Angular, Node, Django, Ember etc.
Hospitalrun - Comprehensive OS app for hospitals.
Navi - Navi is a production quality analytics reporting UI
FullStack - Full-stack boilerplate for you to learn some cool things or build your next app off of.
Pushpin - A collaborative corkboard app.
Pixelpusher - Real-time peer-to-peer collaboration with React.
Capstone - An experimental, tablet-based tool for developing your ideas.

React libs / resources

react-map-gl - React friendly API wrapper around MapboxGL JS.
react-vis - Data Visualization Components
reakit - Toolkit for building accessible rich web apps with React.

Social media automation

Instabot.py - Instagram bot written in python.
Tinder Client - NodeJS based Tinder client.

Startup / remote resources

SaaS Financial Plan - A financial plan template for SaaS.
Founder / Advisor Standard Template - Contract template for startup advisors.
Startup Tools - Free contract templates for startups in the nordics.
Producthunt Founder Club - Lots of benefits for startup founders.
Sticker Mule - Need to print stickers or other stuff for your startup? This is it.
Gitlab Handbook - GitLab team handbook is a great resource on how to run a remote company.
MVP Success Guide - A great guide on running building a minimum viable product for your startup.
EnterpriseReady - SaaS feature guides created for people who build SaaS products for enterprise customers.
Startupstash - A curated directory of tools and resources to build your startup.
Resources for Freelancers - All the free resources and templates you need to get work done as a freelancer.

Studying

Shortcutfoo - Practice shorcuts and become a ninja through interactive learning and repetition.

Templates / boilerplates

Html5up - Free HTML5 site templates
Bootswatch - Free themes for Bootstrap
Fastshell - Simple, quick front-end boilerplate and workflows.
Boostrapsious - Free (and non-free) Bootstrap themes
Start Boostrap - More free (and non-free) Bootstrap themes
Bootswatch - Even more free themes for Bootstrap
Initializr - HTML5 template generator to help you getting started with a new project fast
Extensionizr - Start a chrome extension in 15 seconds.
Underscores - Wordpress theme starter kit.

User testing, usability, page speed

https://usetrace.com/
http://khan.github.io/tota11y/
https://github.com/marmelab/gremlins.js
https://gtmetrix.com/
https://www.fullstory.com/
http://www.webpagetest.org/
https://developers.google.com/speed/pagespeed/insights/