Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
Mobbin - Latest mobile design patterns & elements library
Adobe XD - Adobe XD is an all-in-one UX/UI solution for designing websites, mobile apps and more.
pttrns - iPhone and iPad user interface patterns
UXpin - Design is really about solving problems. UXPin is the UX Design Platform that gets that right.
Page Flows - User flow design inspiration for mobile & desktop