Five years ago today, Cameron, Evan and I announced TeuxDeux, a simple, design-y to-do app. (Cameron’s very first product video still puts a huge smile on my face. Keep in mind, the app UI has changed since then…)

TeuxDeux was born over a lunch conversation where I shared my vision of a calendar based to-app and 3 days later we had a working prototype. 5 years and several updates and revisions later, TeuxDeux is helping keep thousands of happy user stay organized.

The secret is to keep TeuxDeux as your browser landing page, so every time you open a browser window you are being reminded what you should be working on. Organize your to-do’s on our simple, list based calendar view. Cross off what you’ve completed and whatever you don’t cross off, will automatically move to the next day. You can also create your custom ‘someday’ columns on the bottom area for the things that you just need to get out of your head. And, take your to-do’s with you on the go, with our iPhone app.

Happy 5th birthday TeuxDeux. I don’t know what I would do without you.