Open-source environmental analysis plugins for Grasshopper — daylight, energy and comfort simulation.
Why we recommend it
Ladybug and Honeybee put serious building-performance simulation in the hands of designers for free, wired directly into a parametric workflow.
Strengths
- Free and open source
- Validated engines (EnergyPlus, Radiance) under the hood
- Analysis inside a parametric loop
Keep in mind
- Requires Rhino and Grasshopper
- Steep learning curve without building-physics knowledge
How much does Grasshopper Ladybug Tools cost?
Free — Free.
List price, excluding tax. Compare prices across the directory.
Grasshopper Ladybug Tools alternatives and related tools
Autodesk Forma
Cloud platform for early-stage design with real-time environmental analysis and massing studies.
PaidDynamo BIM
Visual programming for Revit, automating repetitive modelling and documentation tasks.
FreeGiraffe
Collaborative urban planning platform combining GIS data with massing studies.
Freemium