It's malware, or it isn't.

§ 01 — Why open source

Protected, not monitored

Every other antivirus vendor asks you to trust a black box running on your machine, watching your files, and reporting who knows what back to who knows where. No one lets you check. NexGuard does.

NexGuard Labs built avtool, our scanner, from the ground up — and we publish every line of it. You don't have to take our word for what it does; you or anyone else can read it, build it yourself, or watch it in a network monitor while it runs. The only outbound call it ever makes is a plain GET to pull down the hash list. It never uploads a file, a filename, or anything about what's on your machine — there's no telemetry to disable because there's no telemetry to write. We open-sourced the scanner specifically so that promise isn't just something we say.

§ 02 — Free and paid

The scanner is free. The rest is optional.