Below are some useful links I’ve found at uxdesign.cc, where you can find tons more helpful content concerned with user experience, usability and product design.
UX Design for Product Teams; Wireframing, prototyping, user testing, and more.
Create interactive wireframes and user flows fast. Access 1000s of built-in web, mobile, and desktop elements and products. Also, import files from Sketch and Photoshop to create both static or interactive designs.
Creating elements of your Wireframes Made Easy.
Simply draw a rectangle on the canvas and select the stencil type you wish to insert.
DesignCode – Sketch
Vector design for anyone…
Entirely focused on user interface design, Sketch is a vector design tool made with simplicity intended for anyone with little to no training to easily pickup.
Creating Great Apps – Prototype to your phone in less than 15 minutes…
Quickly and with no coding, explore a number of designs before deciding on your final option. Upload your own graphics and logos or choose from 16+ built in libraries for iOS, Android, Windows, wearables and more.