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+
24
9
Open Page Rank 7+
57
20
Open Page Rank 6+
87
31
Open Page Rank 5+
116
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
401
7,976
United Kingdom
305
127
India
244
144
Canada
210
152
Germany
169
81
France
167
74
Netherlands
146
70
Spain
141
75
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 | 275 ms |
| CLS | 0 | 0.15 |
| TTFB | 700 ms | 1000 ms |
Median site's p75 values from the Chrome UX Report, Sep 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 |