Depending on whether you are looking for an alternative to Smart Serial Number Technology (product traceability) or Cisco Smart Serial
| Feature | Smart Serials | Gumroad | WHMCS | Paddle | EDD | LicenseSpring | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | | Yes | No | Yes (On-prem) | No | Yes (WP) | Cloud | | Recurring Subs | Poor | Good | Excellent | Excellent | Good | Excellent | | Tax Handling | None | Automatic | Add-on | Automatic | Add-on | None | | Hardware Locking | No | No | No | No | No | Yes | | Pricing Model | One-time fee | % of sales | Monthly | % of sales | Free* (Addon $) | Monthly | smart serials alternative