Technology · Secure Email
10 websites in the live index use iCritical as of October 2026. Download the full list of iCritical websites with website, company, country and language.
SourceAs of October 28, 2026, TechLeads detects iCritical on 10 websites: 0.01% of Secure Email detections, the 45th most-used of 67 Secure Email technologies we track.
Sample results for iCritical. Description is shown under each title.
| Rank | Website | Title · Description | Company | Country | Language |
|---|---|---|---|---|---|
| #1 | libf.ac.uk | Walbrook: Postgrad Study, Online or in London – Formerly LIBFStudy Master | - | - | eng |
| #2 | airsprungbeds.co.uk | Airsprung Beds – Manufacture of beds and mattresses for over 150 years | - | - | eng |
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The most-used Secure Email technologies in the TechLeads index, by number of websites. iCritical accounts for 0.01% of Secure Email detections (10 websites).
| No. | Technology | Websites | Share of Secure Email | Relative size |
|---|---|---|---|---|
| 01 | Proton Mail | 114,899 | 65.0% | |
| 02 | CDNS Network | 8,641 | 4.9% | |
| 03 | MailInBlack | 8,618 | 4.9% | |
| 04 | Sophos | 8,476 | 4.8% | |
| 05 | Hushmail | 4,381 | 2.5% | |
| 06 | Skymail | 4,289 |
TechLeads scans public websites and identifies iCritical from signals in the page HTML, scripts, cookies, HTTP headers and DNS records. Website counts refresh daily; this page uses data from October 28, 2026. Counts only include websites we have scanned, so they can differ from other providers.
The TechLeads live index currently lists 10 websites using iCritical. Open the sample table on this page or download the lead list.
iCritical is not in the HTTP Archive history extract (about 4,000 names). The live TechLeads catalog still tracks it among 12,000+ technologies.
See related technologies and co-occurrence on this page. Historical competitor charts appear when HTTP Archive covers iCritical.
Companies and websites using iCritical in the TechLeads index include libf.ac.uk, airsprungbeds.co.uk. The full list of 10 websites, with company name, country and language, is available as a CSV export.
By number of websites in the TechLeads index, the most-used Secure Email alternatives to iCritical are Proton Mail (114,899), CDNS Network (8,641), MailInBlack (8,618).
TechLeads scans public websites and matches iCritical by signals in the page HTML, scripts, cookies, HTTP headers and DNS records. Website counts refresh daily.
| 2.4% |
| 07 | Migadu | 3,694 | 2.1% |
|---|
| 08 | Securence | 2,597 | 1.5% |
|---|
| 09 | SpamTitan | 2,551 | 1.4% |
|---|
| 10 | MailGuard | 2,525 | 1.4% |
|---|
Yes. A one-time iCritical dataset is $29 as a CSV. The Growth plan ($79/mo) covers 10 technologies with recurring exports, alerts and API access.
Top-ranked sites on iCriticalRank
Technologies most frequently detected on the same websites as iCritical. Counts are websites in the live index.
Sites where we first detected iCritical, by week (UTC, weeks start Monday). These are newly detected sites, and the counts follow our discovery coverage.
10
sites newly detected in the last 12 weeks
Secure email hosting provider.
Our comprehensive database contains 10 websites using iCritical, making it the most complete iCritical sites list available. This iCritical customer websites directory helps businesses detect websites using iCritical and identify potential leads.
Websites using iCritical commonly also use WordPress, Google Analytics 4, Mobilemenu, Cloudflare DNS, MySQL — reflecting typical iCritical technology stacks.
Our iCritical technology detection system scans millions of websites to identify those powered by iCritical. This list of sites with iCritical includes detailed information such as company names, contact details, social media profiles, and website rankings. Whether you're looking for top websites with iCritical or exploring iCritical adoption trends, our database provides comprehensive insights.
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