VirusTotal is described as 'free service that analyzes suspicious files and URLs and facilitates the quick detection of viruses, worms, trojans, and all kinds of malware' and is a well-known app in the Security & Privacy category. There are more than 25 alternatives to VirusTotal for a variety of platforms, including Online / Web-based, Windows, Linux, Mac and Google Chrome. The best alternative is MetaDefender, which is free. Other great apps like VirusTotal are Hybrid-Analysis.com (Free), Jotti (Free), herdProtect (Free) and Malwr (Free).
Virusade is a hosted virus scanning utility designed for integration with web applications. Any application dealing with user-supplied files should be scanning for viruses, and virusade makes it easy with an HTTP REST/JSON approach. Commercial use is allowed.
Online heuristic URL scanning and malware detection. Scan websites for malware, exploits and other infections with quttera detection engine to check if the site is safe to browse. Check website for malicious pages and online threats.