Timelinize is an open-source tool that puts all your personal data on a single timeline.

Timelinize is an open-source tool that records all your personal data, including photos, text messages, emails, diary entries, social media posts, workouts, and contacts, on a timeline. It is compatible with Windows, macOS, and Linux.
Timelinize - Everything at home

You can get a good idea of what kind of tool Timelinize is by watching the movie below.
Timelinize - Introduction - YouTube
Most apps store data in the 'cloud' and don't allow you to manage it. This means if you lose access to your Google, Apple, or Facebook account or your smartphone, you lose control of your data. Timelinize is a tool that brings that data to your computer and lets you manage it as a timeline.
The dashboard looks like this.

The Timeline view groups and displays all your data in a single linear layout, making it easy to see what happened on a particular day in chronological order.

Timelinize is entity-aware, so it can visualize on a map when and where points occurred, even for coordinate-less data like text messages, emails, etc. If an entity has geolocated points that occur around the same time as other data points, they will also be displayed on the map.

Heat maps can also show where data is concentrated.
Track your connections across all types of chats and messages, and unify your conversations across platforms in one unified view.

Gallery lets you browse hundreds of photos and movies from your photo library, sent and received messages, and other sources.

Timelinize lets you add millions of data points to your timeline in minutes, with full control over importing, thumbnails, embedding, and more.

An example of the supported services is as follows:

Timelinze is developed as open source, and its repository is hosted on GitHub. It is licensed under the GNU Affero General Public License v3.0 . At the time of writing, the version is 0.0.24 , and Timelinize's developers state that 'Timelinize is still in development and not yet complete.'
GitHub - timelinize/timelinize: Store your data from all your accounts and devices in a single cohesive timeline on your own computer
https://github.com/timelinize/timelinize
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