IE Tab is a browser extension available for Chrome, Edge, and Firefox. The "Extra Quality" version (often referred to as IE Tab Plus or the commercial edition) offers features beyond the basic free version:

The paid license is sold per user/per year. A legitimate license key is generated by the developer (Blackfish Software) upon purchase.

If you still want to explore free license keys, I recommend exercising caution and thoroughly researching the source before downloading or entering any sensitive information.

Most keys shared on public forums are quickly blacklisted by the developers, meaning they will not work or will be deactivated shortly after use.

The standard (free) version of IE Tab is often limited. The "Extra Quality" tier (or paid license) typically unlocks:

While many third-party sites and links claim to offer a free license key for IE Tab