C# workflows

Elsa Workflows is a modular, open source library for building and executing long-running processes using a fluent C# API or a visual designer.

Elsa Workflows 3.0 provides a robust toolkit for .NET developers to orchestrate complex business logic without the overhead of legacy frameworks like Windows Workflow Foundation. It supports both short-lived rules and long-running tasks that persist state across days or months using providers like Entity Framework Core or MongoDB. Developers can define logic through a clean C# DSL (Domain Specific Language), JSON, or a drag and drop HTML5 designer (Elsa Studio). With built-in support for triggers, activities, and dynamic expressions, it handles the heavy lifting of state management and concurrency in modern distributed systems.

https://elsaworkflows.io