Technology · Secure Email
11,178 websites in the live index use GFI as of October 2026. Download the full list of GFI websites with website, company, country and language.
SourceAs of October 28, 2026, TechLeads detects GFI on 11,178 websites.
Sample results for GFI. Description is shown under each title.
| Rank | Website | Title · Description | Company | Country | Language |
|---|---|---|---|---|---|
| #1 | irvingfireextinguisher.com | Irving Fire ExtinguisherFire extinguisher sales, service, inspection, and maintenance company serving Irving and surrounding areas. | Irving Fire Extinguisher | US | en |
| #2 | bigfishrealestategroup.com | Big Fish Real Estate GroupReal estate agency specializing in property sales, purchases, and investments. | Big Fish Real Estate Group | US | en |
| #3 | jpgfiles.cl | JPG FilesWebsite dealing with JPG image files, possibly hosting, sharing, or conversion services. | JPG Files | CL | es |
| #4 | kingfishing.vn | King FishingFishing equipment, supplies, and services provider in Vietnam. | King Fishing | VN | vi |
| #5 | edenholz.ro | EdenholzWood products or timber company, likely dealing in holz (wood) materials. | Edenholz | RO | ro |
| #6 | bigfishdistillery.com | Big Fish DistilleryCraft distillery producing spirits and alcoholic beverages. | Big Fish Distillery | US | en |
| #7 | insigfigs.com | InsigfigsSignificant figures calculator or educational tool for scientific calculations. | Insigfigs | US | en |
| #8 | thecraigfirm.com | The Craig FirmLaw firm providing legal services and consultations. | The Craig Firm | US | en |
| #9 | aromicon.de | AromiconAroma and fragrance products, possibly essential oils or scent-related goods. | Aromicon | DE | de |
| #10 | vidingfitness.es | Viding FitnessFitness center, gym, or training services in Spain. | Viding Fitness | ES | es |
| #11 | fast-chiptuningfiles.com | Fast Chiptuning FilesProvider of chiptuning files for vehicle performance optimization. | Fast Chiptuning Files | NL | en |
| #12 | emailmarketingfirms.com | Email Marketing FirmsDirectory or service connecting users with email marketing agencies. | Email Marketing Firms | US | en |
| #13 | aygfinancialgroup.com | AYG Financial GroupFinancial services firm offering investment, planning, and advisory services. | AYG Financial Group | US | en |
| #14 | kingfisherperiperi.co.uk | Kingfisher Peri PeriPeri-peri chicken restaurant or food delivery service. | Kingfisher Peri Peri | GB | en |
| #15 | fulltangfit.com | Full Tang FitFitness and training programs, possibly martial arts or strength-focused. | Full Tang Fit | US | en |
| #16 | longfinch.com | Long FinchLikely a business or service company with 'finch' in the name, possibly related to financial services or a branded product/service | Long Finch | US | en |
| #17 | livingfire.gr | Living FireGreek-based company or service, possibly related to heating, energy, or lifestyle products/services | Living Fire | GR | el |
| #18 | thekindlingfire.com | The Kindling FireLikely a creative, educational, or lifestyle brand focused on inspiration or personal development | The Kindling Fire | US | en |
| #19 | bigfivedelivery.com | Big Five DeliveryDelivery or logistics service company | Big Five Delivery | US | en |
| #20 | cyborgfinancialadvisors.com | Cyborg Financial AdvisorsFinancial advisory services company, likely offering AI-powered or technology-driven financial advice | Cyborg Financial Advisors | US | en |
| #21 | tradingfields.com | Trading FieldsFinancial trading or investment platform or service | Trading Fields | US | en |
| #22 | byggfirma-molndal.se | Byggfirma MölndalSwedish construction or building company based in Mölndal | Byggfirma Mölndal | SE | sv |
| #23 | backerspringfield.cn | Backers SpringfieldChinese-based company or service, possibly related to investment, backing, or business support | Backers Springfield | CN | zh |
| #24 | vikingfiberco.com | Viking Fiber CoFiber optic or telecommunications company | Viking Fiber Co | US | en |
| #25 | wingfieldproperties.com | Wingfield PropertiesReal estate or property management company | Wingfield Properties | US | en |
Complete GFI website dataset in CSV. One-time purchase.
GFI dataset · CSV
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The most-used Secure Email technologies in the TechLeads index, by number of 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 | 2.4% |
TechLeads scans public websites and identifies GFI 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 11,178 websites using GFI. Open the sample table on this page or download the lead list.
GFI 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 GFI.
Companies and websites using GFI in the TechLeads index include irvingfireextinguisher.com, bigfishrealestategroup.com, jpgfiles.cl, kingfishing.vn, edenholz.ro. The full list of 11,178 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 GFI are Proton Mail (114,899), CDNS Network (8,641), MailInBlack (8,618).
TechLeads scans public websites and matches GFI by signals in the page HTML, scripts, cookies, HTTP headers and DNS records. Website counts refresh daily.
| 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 GFI dataset is $29 as a CSV. The Growth plan ($79/mo) covers 10 technologies with recurring exports, alerts and API access.
Email Security and Anti-Spam Provider.
Our comprehensive database contains 11,178 websites using GFI, making it the most complete GFI sites list available. This GFI customer websites directory helps businesses detect websites using GFI and identify potential leads.
Our GFI technology detection system scans millions of websites to identify those powered by GFI. This list of sites with GFI includes detailed information such as company names, contact details, social media profiles, and website rankings. Whether you're looking for top websites with GFI or exploring GFI adoption trends, our database provides comprehensive insights.
Each entry in our GFI sites list includes valuable data points: domain name, global ranking, company information, contact details, social media links. This makes it easy to detect websites using GFI and reach out to potential customers or partners.
Get instant access to the full list of sites with GFI in CSV format. Our dataset includes all 11,178 GFI customer websites with complete contact information, perfect for lead generation, market research, and competitive analysis. The data is regularly updated to ensure accuracy and includes the latest GFI powered websites.
