Open-Xchange App Suite vs Proton Mail
Head-to-head usage across the sites we track.
Top sites by authority
Open-Xchange App Suite · Proton Mail · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
0
8
Open Page Rank 8+
3
51
Open Page Rank 7+
3
205
Open Page Rank 6+
5
433
Open Page Rank 5+
8
754
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 · Proton Mail · share of sites in each country using one or the other
United States
22
5,830
United Kingdom
16
2,125
India
17
1,985
Germany
27
1,938
France
14
1,914
Canada
13
1,752
Netherlands
13
1,445
Spain
15
1,321
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Open-Xchange App Suite | Proton Mail |
|---|---|---|
| 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.