ESET offers a of its products. You can download this directly from the official ESET website. This gives you access to the latest version (not the outdated version 5) with full protection, virus definition updates, and technical support. This is the safest way to "try before you buy." The trial is activated by creating a free ESET HOME account or inserting a license key. For desktop users, there is no permanent free version, but the 30-day period is sufficient for short-term needs.