Whimsical Wireframes - Lightning fast wireframing with real-time collaboration.
Wireframe.cc - Sweet and simple online wireframing tool.
Adobe XD - Adobe XD is an all-in-one UX/UI solution for designing websites, mobile apps and more.
Wireframe for Figma - Lightning fast wireframing on figma (500+ elements)
Userflows - Automatically generate user journeys
Invision - Prototyping and collaboration for design teams