# Kepware Server vs Prosys OPC UA Gateway

Source: https://listme.name/compare/kepware-vs-prosys-opc-ua-gateway
Framed by the ranking: https://listme.name/best/opc-and-industrial-connectivity-software

| | Kepware Server | Prosys OPC UA Gateway |
|---|---|---|
| Score | 92.5 | 79.0 |
| Rank | #1 | #6 |
| Price | Contact for pricing | Paid |
| Best for | Multi-vendor plants needing one driver layer | Migrating legacy COM OPC servers to OPC UA |
| Protocols | Over 150 drivers (vendor site) | OPC DA 2/3, OPC AE, OPC HDA to OPC UA |
| License model | Licensed; quote-based | Licensed; price list on the site |
| Trial | Two hours, restartable | Trial offered |

The broadest driver set in this list and one connectivity layer for PLCs, controllers and devices, on Windows and Linux. Licenses are quoted and the trial lasts two hours at a time. Wraps classic COM OPC DA, AE and HDA servers as OPC UA servers, with runtime connection changes. It is a 32-bit and 64-bit Windows application, and pricing sits in a separate price list.