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Metadefender is an SDK, which allows integration of various antivirus engines into applications for real time scanning. Using Metadefender, you can integrate antivirus engines from Avast!, ClamAV, Quick Heal and VirusBuster EDK into your application. No antivirus can detect threats with 100% guarantee. Metadefender, which unites several different antivirus engines increases probability of successfully detecting malware.