Organizing is dully covered on the HTC One. Office documents are handled through the preloaded Polaris Office app. It supports Excel, Word, PowerPoint and more and lets you view and edit files on the go.
We tested a couple of Word and Excel files and found the One perfectly capable of handling them.
The calendar on the HTC One has been redesigned in accordance to the new Sense 5 look. For one days aren't highlighted in a hand-drawn circle but regularly instead. Instead of the selectable tabs now the Calendar lets you side-swipe between tabs (just like in the People app).
It has four different types of view: daily, monthly, agenda and invitation. Adding a new event is quite straightforward and you can also set an alarm to serve as a reminder.
The Agenda view shows a list of all the calendar entries from the recent past to the near future. Invitation view only lists events with invitation info attached to them. The day view also shows the weather forecast at the top of the screen, which is a nice touch.
Naturally, the Calendar supports multiple online calendars (including Facebook), only one of which you can sync with your computer. You can also easily show/hide the ones you don't want.
There is also a calculator on board. It is nicely touch optimized with big, easy to hit buttons. Flipping it horizontally enables some more advanced functions like logarithms.
The Clock app comes with World Clock, Alarms, Stopwatch and a Timer. The World clock is like a mini Google Earth - it shows a 3D globe and you can rotate and zoom in on it freely. You can add cities that are pinned to the globe (and also visible as a list below it).
The alarm clock application can handle multiple alarms, each with its own start and repeat time. The stopwatch and timer are pretty self explanatory.
The HTC Tasks app is here as well. It does exactly what the name suggests and can access your Google Tasks. There is no location-based reminder support unlike with Any.DO, iOS's Reminders, etc.
HTC Note app is also onboard. It is somewhat similar to Samsung's SPen - you can take various notes, add drawings, pictures and dictations. Sharing and printing options are also available.
HTC's Weather app is here too. It became popular years ago with its cool weather animations and widget. You can preset many cities across the globe and it uses the Accuweather info (much like Samsung and Apple do).