If you need to view files on a computer without an active ETABS license, consider these tools:

For those looking for a direct link like "app.etabs.com" where they can drag and drop a file and edit it immediately, the reality is slightly disappointing.

If you genuinely need to an ETABS file via a browser, you need a Virtual Desktop Infrastructure (VDI). Services like Amazon WorkSpaces, Microsoft Windows 365, or specialized engineering cloud providers allow you to:

For quick geometry checks without an IFC workflow: