Who uses Esper?
We think Esper is the most widely-deployed CEP engine available. It’s licensing and technical requirements have made it suitable for integration into many environments and software products. EsperTech provides redistribution licenses to software companies that incorporate Esper/NEsper under commercial (non-GPL) terms. Some of the comnpanies that agreed to be listed as licensors appear on the EsperTech web site.