Trojan Killer

Trojan Killer is a portable Windows malware removal tool from Gridinsoft that runs from a USB drive without installation and removes trojans, spyware and adware. Trojan Killer can terminate suspicious processes running in memory so cleanup can continue without the threat restarting immediately. The portable build keeps the Trojan Killer workflow simple: launch the scanner, review active threats, stop malicious processes, and remove unwanted files from one tool. If the infected PC cannot safely download security tools, use another computer to get Trojan Killer Portable and copy it to a USB flash drive. Supported platforms are Windows.

Current Version

2.2.2.6

Product Page

trojan-killer.com

Market

Consumer

Licence

Paid

Price

USD 35.4 / annual

Record Created

2026-08-20

Last Updated

2026-10-10

GridinSoft is a Ukrainian company in Kyiv, in business since 2003, making removal tools for people whose machines are already infected rather than full protective suites. Its products are widely used as a second opinion alongside another antivirus. They are GridinSoft Anti-Malware for Windows, Trojan Killer and Trojan Killer Portable — the portable edition runs from a USB stick on a machine too compromised to install software on — and Android Trojan Scanner on phones, with free web tools for checking links, files and website reputation. Its detection also reaches further than its own products: GridinSoft's engine is one of those aggregated by multi-engine scanning services, so its verdicts appear in other companies' results. It is a small vendor and enters the public test cycles rarely. Vendor page →

Website

gridinsoft.com

Country

🇺🇦Ukraine

Headquarters

🇺🇦Kyiv, Ukraine

Year Established

2003

Customers

—Not known

Users

480K users

Revenue

$5.0M (2026)