Android phone mockups

https://www.mockplus.com/blog/post/android-mockup

https://dribbble.com/shots/4284976-Free-Samsung-Galaxy-S9-Mockups

How to build a web app: A beginner's guide (2019)

List of web app:

• Trello
• Gmail
• Notion
• Pipedrive

Source: https://www.budibase.com/blog/how-to-make-a-web-app/

Design system

Style Guide (for web app)

Design Systems Gallery
https://adele.uxpin.com/
https://designsystemsrepo.com/design-systems

http://styleguides.io/examples.html

Some good online ones are:

• Shopify's Polaris
• HUDL's Uniform
• SAP Fiori Design Principles | SAP Fiori for iOS Design Guidelines

Some good offline Figma files are:

• Atlassian
• Elastic
• VTEX
• Docker
• Carbon

Resources

Auth0 (GitHub supported)
https://styleguide.auth0.com/

Bundlify
https://style.bundlify.com/

Purple3 by Heroku
https://design.herokai.com/purple3/docs/

Google’s Design for Driving

https://developers.google.com/cars/design

Free Enamel Pin Mockup PSD Templates

Blondie, Brownie's Sister

https://sugarspunrun.com/blondies-recipe/

UI/UX Design resource

10 Usability Heuristics for User Interface Design
https://www.nngroup.com/articles/ten-usability-heuristics/

User flows of specific products
https://pageflows.com/
https://mobbin.design
https://pttrns.com/