Whimsical Wireframes - Lightning fast wireframing with real-time collaboration.
DelaFil - Share files in an easy way. One, two, three and its Sent! Instructions:
Userflows - Automatically generate user journeys
EasyUpload.io - EasyUpload.io is a file sharing and file transfer service that allows you to upload and share files.
Adobe XD - Adobe XD is an all-in-one UX/UI solution for designing websites, mobile apps and more.
WeTransfer - WeTransfer is a free service to send big or small files from A to B.