Lifehacker founder Gina Trapani uses a plain text editor called Todo.txt to manage her to-dos, applying David Allen's Getting Things Done approach by tagging each task with project and context information. John Henry Müller, a designer at Pack, uses a simple routine to set expectations for a productive day, writing three sentences in plain text each morning. Zach Holman, one of GitHub's first engineering hires, keeps track of tasks as desktop files, while Nathan Kontny adds Markdown support to his writing app Draft. Bernie Michalik, an IT architect, uses a spreadsheet method with multiple columns to organize his tasks. Merlin Mann, a blogger, created the "Hipster PDA" analog system using index cards and a binder clip, which he still popularly recommends today. Mark McGuinness prefers using Post-It Notes for task management due to their size limitation. Interaction designer Ryder Carroll has developed the Bullet Journal method, which uses short form-notation in a notebook. Jerry Seinfeld's calendar system involves marking off completed tasks with a red X on a wall calendar. Various tools and methods are available for managing to-do lists beyond traditional apps, including Zapier automation platform and spreadsheet software like Google Docs.