Higson.io - Hyperon is a BRMS, that was created with very large decisions and hyper-performance in mind. It stands out with the concept of the business domain which organizes the whole configuration in easy to manage way.
Sheetgo for G Suite - Connect Google Sheets, Excel & CSV. Import, export, merge and filter data automatically.
OptaPlanner - Mathematical optimization software
SolarWinds Service Desk - An IT service management (ITSM) solution that understands what it takes to successfully manage your employee services. Try Solarwinds Service Desk for free!
Simple Rule Engine - DotNet simple BRMS XML rule engine
Joget.org - Open Source Workflow Software, Business Process Management and Low-Code Application Platform.