think-cell is a German computer software company founded in 2002 and headquartered in Berlin, Germany. The Fraunhofer Society spin-off focuses upon the creation of Microsoft PowerPoint and Excel add-in products.The company's main product – think-cell chart – aims to facilitate the creation of charts, e.g., bar charts, waterfall charts, Marimekko charts and Gantt charts, on Microsoft PowerPoint presentation slides from Microsoft Excel data sheets.