Mockingbird : Mockingbird is an online tool that makes it easy for you to create, link together, preview, and share mockups of your website or application.
Email-Blueprints : Email Blueprints is a collection of HTML email templates that can serve as a solid foundation and starting point for the design of emails.
Penpot : Penpot is the first open-source design tool for design and code collaboration. Designers can create stunning designs, interactive prototypes, design s...
GeoNames : The GeoNames geographical database covers all countries and contains over eleven million placenames that are available for download free of charge.
