This page was last updated at: Feb 25, 2026
Gazelle was a research web browser project by Microsoft Research; the main idea of the project was to apply the principles that guide good Operating System design & building to that of Web Browser development. In particular, having a solid "kernel" of the system, and then having different, independent layers above it; so that if one aspect had an issue it wouldn't crash the whole browser.
Gazelle was a web browser that ran on Desktop devices. It was discontinued in 2009.
| Browser URL | www.microsoft.com/en-us/research/publication/the-multi-principal-os-construction-of-the-gazelle-web-browser/ |
|---|---|
| Browser made by | Microsoft |
| Development Status |
Discontinued The developers have announced that the browser won't be developed any more
This was a research project by Microsoft that was never fully released.
|
| Launched | 2009 |
| Discontinued | 2009 |
| Operating System |
Windows
|
| Device platform | Desktop |
| Rendering Engine |
Custom
Unknown, but since Microsoft were researching new approaches to browsers, it's possible they didn't use Trident and started from scratch...?
|
| License | Proprietary (research prototype) |
| Wikipedia Article | https://en.wikipedia.org/wiki/Gazelle_(web_browser) |
|---|---|
|
Official Promotion
2009-02-01
|
The Multi-Principal OS Construction of the Gazelle Web Browser |