

The fly in the ointment: Only a limited number of apps work with Timeline, though Microsoft offers tools for developers to bake in support. This even syncs across devices so it could be especially useful if you use multiple PCs, though Microsoft sadly plans to kill Timeline’s cross-device syncing soon. Even more handily, Microsoft lets you group related apps together into “Activities” in Timeline, so that when you open that week-old budget document, for example, the presentations and websites you referenced at the time can be easily summoned as well. Clicking the Task View button in the taskbar or pressing Windows Key + Tab summons the feature, which displays a-you guessed it-time line of your activity in supported apps, stretching back over the past. Timeline helps you pick up where you left off.
