Data as of Aug 25, 2026 · Based on 3,181,687 AI responses across 10,525 prompts · See how Parse measures this
Calliope is a free and open source tool licensed under Apache 2.0 for building energy system models at scales from urban districts to continents. It is used in both research and commercial applications, offering a flexible text-based model definition format and built-in interactive visualization of results.
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