For my money, these categories are mostly arbitrary because of most of these ideas are tied together.

User Interface Design

• Pure UI — Guillermo Rauch
• Words as Material — Nicole Fenton
• Interface Writing — Nicole Fenton
• A Visual Lexicon — Robin Rendle
• Declarative Design Tools — Jon Gold
• Casting Graphite in Gold — Dan Eden
• Things We Own — Helen Holmes
• On Icons — iA
• Building Products | The Year of the Looking Glass — Julie Zhuo
• Ignore details early on — Jason Fried
• The Web’s Grain — Frank Chimero

Front-end

• The Web Isn’t Uniform — Karolina Szczur
• Progressive Enhancement: Zed’s Dead, Baby — Tom Dale
• Native Web Apps — Henrik Joreteg + &yet
• The melting pot of JavaScript — Dan Abramov
• Immutable CSS — Harry Roberts
• The Extensible Web Manifesto
• JavaScript: the Land of Opportunity — Sean Washington
• About HTML semantics and front-end architecture — Nicolas Gallagher

Programming

• So you want to be a Wizard — Julia Evans
• Itsy Bitsy Data Structures – Simplified examples of many common data structures — Jamie Kyle
• The hidden cost of design complexity - Julien Zmiro