Guidewire Software | 283,172 followers on LinkedIn. Engage, Innovate, Grow Efficiently | Guidewire is the platform P&C insurers trust to engage, innovate, and grow efficiently. More than 570 insurers in 42 countries, from new ventures to the largest and most complex in the world, rely on Guidewire products. With core systems leveraging data and analytics, digital, and artificial intelligence, Guidewire defines cloud platform excellence for P&C insurers.