Pick Vivaldi if
You want tabs on any side, tab stacks, tiling and a setting for nearly everything.
The catch. The number of options takes time to learn, and its interface is not open source.
Vivaldi vs Dia
Vivaldi is best for customising everything. Dia is best for AI in the browser.
Pick Dia if
You want an assistant that reads your tabs and does writing and research with you.
The catch. It needs an Apple Silicon Mac on macOS 14 or later, and its best AI features are paid.
Vivaldi vs Dia, feature by feature
| Vivaldi | Dia | |
|---|---|---|
| Engine | Chromium | Chromium |
| Vertical tabs | Yes, tabs on any side | Yes |
| Sites on screen at once | Several, with Tab Tiling | Two or more, in Split View |
| Separate workspaces | Workspaces and profiles | Profiles, each in its own window |
| Ad and tracker blocking | Built in, ads and trackers | Built in, ads and trackers |
| Extensions | Chrome Web Store | Chrome Web Store |
| Platforms | macOS, Windows, Linux, iPhone, Android | macOS (Apple Silicon) |
| Open source | Partly — the interface is closed | No |
| Price | Free | Free; Dia Pro $20/month |
| Development | Active | Active |
Questions
Is Vivaldi better than Dia?
Neither wins everywhere. Vivaldi is best for customising everything; Dia is best for AI in the browser. Pick Vivaldi if you want tabs on any side, tab stacks, tiling and a setting for nearly everything. Pick Dia if you want an assistant that reads your tabs and does writing and research with you.
Do Vivaldi and Dia block ads?
They block the same way: built in, ads and trackers.
Which extensions do Vivaldi and Dia run?
Both install extensions from the Chrome Web Store.
Where do Vivaldi and Dia run?
Vivaldi: macOS, Windows, Linux, iPhone, Android. Dia: macOS (Apple Silicon).
Are Vivaldi and Dia free?
Vivaldi: Free. Dia: Free; Dia Pro $20/month.