The most comprehensive collection of Design Principles on the Internet.

921 design principles and counting.



Consultancy firm

TXI is a boutique strategy and product innovation firm that closes the gap between ambition and reality.

It was founded in 2002 with the philosophy that “trust is harder to build than technology.” Partnering with Fortune 100s, startups, industry leaders, and mission-driven organizations to deliver value through product innovation, They've continually earned that trust with each new product, user insight, and digital strategy.

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TXI Design Principles

5 principles