Open-Xchange App Suite vs Outlook Web App
Head-to-head usage across the sites we track.
Top sites by authority
Open-Xchange App Suite · Outlook Web App · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 8+
3
13
Open Page Rank 7+
3
32
Open Page Rank 6+
5
49
Open Page Rank 5+
8
67
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Open-Xchange App Suite · Outlook Web App · share of sites in each country using one or the other
United States
22
2,704
India
17
1,547
United Kingdom
16
1,345
Germany
27
1,268
Canada
13
1,153
France
14
1,078
Spain
15
973
Netherlands
13
923
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Open-Xchange App Suite | Outlook Web App |
|---|---|---|
| LCP | 1.7 s | 1.7 s |
| INP | 87 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 500 ms | 700 ms |
Median site's p75 values from the Chrome UX Report, Aug 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.
All Open-Xchange App Suite sites · All Outlook Web App sites