FlagSmith vs LaunchDarkly
Head-to-head usage across the sites we track.
Top sites by authority
FlagSmith · LaunchDarkly · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
3
0
Open Page Rank 8+
23
9
Open Page Rank 7+
55
21
Open Page Rank 6+
85
31
Open Page Rank 5+
113
54
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
FlagSmith · LaunchDarkly · share of sites in each country using one or the other
United States
403
8,075
United Kingdom
305
133
India
246
157
Canada
202
163
Germany
170
87
France
161
73
Spain
138
77
Netherlands
142
69
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | FlagSmith | LaunchDarkly |
|---|---|---|
| LCP | 2.3 s | 2.1 s |
| INP | 100 ms | 250 ms |
| CLS | 0 | 0.2 |
| TTFB | 800 ms | 1000 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.
Sites that switched
Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.
LaunchDarkly to FlagSmith
| Domain | When |
|---|---|
| futurehyundaiofconcord.com | Mar 2026 |
| fordhawaii.com | Dec 2025 |
| volvocarsbridgewater.com | Sep 2025 |
| volvocarsprinceton.com | Sep 2025 |