Let's Encrypt vs Sectigo:Which is searched more?
In September 2026, Let's Encrypt had more branded searches than Sectigo among SSL certificate providers worldwide. Let's Encrypt had about 62,700 branded searches, while Sectigo had 27,100. Let's Encrypt made up 1.4% of all SSL certificate provider searches we track, and Sectigo accounted for 0.59%. These are worldwide searches for English-language branded terms.
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Is Let's Encrypt or Sectigo more popular in search?
Compare the providers that issue security certificates. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time.
Share of searches by month for Let's Encrypt, Sectigo. The figures are in the table below the chart.
View monthly share of searches table
| Month | Cloudflare | Comodo | Let's Encrypt | DigiCert | Sectigo | GlobalSign | Namecheap |
|---|---|---|---|---|---|---|---|
| Oct 2025 | 78% | 15.8% | 3.1% | 1.7% | 0.94% | 0.52% | <0.01% |
| Nov 2025 | 93.5% | 4.6% | 0.91% | 0.51% | 0.28% | 0.12% | <0.01% |
| Dec 2025 | 88.4% | 8% | 1.9% | 0.88% | 0.48% | 0.26% | <0.01% |
| Jan 2026 | 80.9% | 13.4% | 3.1% | 1.5% | 0.8% | 0.36% | <0.01% |
| Feb 2026 | 83.2% | 11.3% | 2.8% | 1.5% | 0.82% | 0.37% | <0.01% |
| Mar 2026 | 85.9% | 9.5% | 2.2% | 1.3% | 0.69% | 0.38% | <0.01% |
| Apr 2026 | 86% | 9.5% | 2.2% | 1.3% | 0.7% | 0.31% | <0.01% |
| May 2026 | 86% | 9.5% | 2.2% | 1.3% | 0.7% | 0.31% | <0.01% |
| Jun 2026 | 85.7% | 9.5% | 2.6% | 1% | 0.69% | 0.46% | <0.01% |
| Jul 2026 | 86.5% | 9.6% | 1.9% | 1% | 0.7% | 0.31% | <0.01% |
| Aug 2026 | 89% | 8% | 1.4% | 0.88% | 0.48% | 0.26% | <0.01% |
| Sep 2026 | 88.7% | 8% | 1.4% | 1.1% | 0.59% | 0.26% | <0.01% |
How has the Let's Encrypt and Sectigo comparison changed over the last 12 months?
3 findings
- Let's Encrypt was ahead of Sectigo in every measured month of the 12 months ending September 2026.
- Across the 12 months ending September 2026, Let's Encrypt’s share of searches among SSL certificate providers worldwide moved from 3.1% to 1.4%, and its estimated monthly branded searches moved from 88.8K to 62.7K.
- Across the 12 months ending September 2026, Sectigo’s share of searches among SSL certificate providers worldwide moved from 0.94% to 0.59%, and its estimated monthly branded searches held steady at 27.1K.
How did search popularity change for SSL certificate providers worldwide in September 2026?
1 change
Let's Encrypt’s share of searches among SSL certificate providers worldwide has lost ground for 3 months in a row, from 2.6% to 1.4% in September 2026.
How are branded searches counted?
3 search terms
Brandwave collects information about searches that people make online using Let's Encrypt’s and Sectigo’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.
Let's Encrypt
2 branded search terms
- lets encrypt
- letsencrypt
Sectigo
1 branded search term
- sectigo
Other head-to-heads among SSL certificate providers
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