think-cell think-cell is a Microsoft Office add-in for PowerPoint and Excel, which integrates seamlessly with these applications to help you visualize complex charts like Marimekko, Gantt and waterfall within minutes. think-cell also provides a set of tools to structure and maintain agendas within PowerPoint presentations. For more information, please visit the think-cell website. SBT does not directly or indirectly endorse any product or service provided, or to be provided, by think-cell and/or parent company or subsidiaries. think-cell shall not state or imply any endorsement by SBT or SBT staff. Usage Terms - think-cell offer their software for FREE to academic or non-profit organizations, given that they only use the software for education, public research or their direct non-profit core operations. If you are eligible and agree to the Usage Terms above, please contact [email protected] to obtain a copy of the think-cell license key.