BehaviorTree/BehaviorTree.CPP

Health v2 · maintenance only

Adoption not part of the score

4174 stars · 853 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

BehaviorTree.CPP is a C++17 framework for building Behavior Trees, designed to be flexible, reactive, and fast, with asynchronous actions as first-class citizens. Trees are defined in an XML-based scripting language loaded at runtime, with runtime-loadable node plugins, type-safe dataflow between nodes, and built-in logging/profiling for recording and replaying state transitions.

Use cases

• build behavior trees for robot control in C++
• create AI for games instead of finite state machines
• replace finite state machines with more modular behavior logic
• define reactive robot behaviors with non-blocking async actions
• load behavior tree structures from XML at runtime
• record and replay behavior tree execution for debugging
• integrate behavior trees with ROS2 like Nav2 or MoveIt

When to choose

• you need production-ready behavior trees for robotics, especially with ROS2
• you want XML-defined trees decoupled from C++ node implementations
• you need reactive, concurrent execution of multiple actions
• you want built-in logging, profiling, and replay of state transitions
• you prefer behavior trees over finite state machines for complex agent logic

When to avoid

• you need a Python or other non-C++ behavior tree library
• your logic is simple enough that a plain state machine suffices
• you require a free graphical editor with unlimited nodes (Groot2 PRO is paid)
• you target platforms without C++17 compiler support

Facets

library · maturity stable

game-engine simulation logging plugin-system workflow-automation robotics artificial-intelligence simulation cpp windows cross-platform behavior-trees state-machine ros2 async-actions xml-trees groot2 game-development linux macos

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