Here is a great blog post by inVision which showcases great wire-framing work:https://www.invisionapp.com/blog/wireframe-examples/

• Alex Dovhyi: https://dribbble.com/dovhyi
• Julio Castellano: https://dribbble.com/Julio_designs
• Martyna Krolikowska: https://dribbble.com/krolikowska
• Zahid Hasan Zihan: https://dribbble.com/Zisan_jusi
• Krisztina Szerovay: https://dribbble.com/krisztinaszerovay
• Javier Oliver: https://dribbble.com/JAVIER88
• James Boross: https://dribbble.com/JJBoross
• Grant Helton: https://dribbble.com/GrantGamesGames
• Swapnil Borkar: https://dribbble.com/swapnilborkar
• Shojol Islam: https://dribbble.com/shojolislam
• Jovan Belic: https://dribbble.com/jovanbelic
• Monica Galvan: https://dribbble.com/monicagalvan

of course the team promotes their own tool: freehand by invision.