Mobbin - Latest mobile design patterns & elements library
FlowMapp - FlowMapp is a UX planning tool for creating visual sitemaps and user flow.
pttrns - iPhone and iPad user interface patterns
A1 Sitemap Generator - A1 Sitemap Generator has been in active development and sold since 2005.
Page Flows - User flow design inspiration for mobile & desktop
Octopus.do - Build your website structure in real-time and rapidly share it to collaborate with your team or clients. Start prototyping websites or apps instantly.