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.

Expensify - Import expenses directly from a credit card to create free expense reports quickly. Approve reports online and reimburse directly to a checking account with one click.

Decisimo - Decisimo - decision intelligence services and decisioning system. An engine for deployment of rule based and machine learning driven decisioning

Zoho Expense - Automate your expense reporting process and streamline the approval flow.

GoRules.io - Open-source business rules engine for automating decisions

Spendesk - Smart spending solution for agile teams