MiniZinc - MiniZinc is a free and open-source constraint modeling language.
Sheetgo for G Suite - Connect Google Sheets, Excel & CSV. Import, export, merge and filter data automatically.
OptaPlanner - Mathematical optimization software
Mail Merge for G Suite - Create your mail template as a draft in Gmail and merge it with your Sheet data. You can use this syntax: {{Column Header}}
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.
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!