Chrome controls ~73% of global desktop browser market share. Add Chromium-based browsers (Edge, Brave, Opera, Vivaldi) and the figure exceeds 80%. Mozilla's Gecko (Firefox) is the only viable independent rendering engine.
Developers test and build for Chrome only. Agriculture teaches us how dangerous monocultures are.
| Engine | Browser(s) | Creator |
|---|---|---|
| Blink | Chrome, Edge, Brave, Opera, Vivaldi | |
| Gecko | Firefox | Mozilla |
| WebKit | Safari | Apple |
When one company controls the dominant rendering engine, they effectively control which web standards are implemented, which APIs exist, and what the web can do. Alternative protocols sidestep this entirely — they don't use browsers at all.