Presentation is possibly one of the most important things for designers, especially if you're directly client-facing. Ready-to-go mockups are perfect for all busy designers, and allow you to showcase the new designs in realistic contents. Mockups exist for pretty much everything imaginable: cosmetic packaging, iPhones, iPad, computers, stationery—if it can be designed, there will be a mockup perfect for you to use.
Moyo Studio
Moyo is absolutely fantastic. They partner with different photographers to always create top notch mockups.
Harmonais Visuals
Deep, moody and oh so luxurious.
Ruben Stom
Absolutely lovely diy-style mockups. Rather than delivering complete scenes, these mockups are set up so you can create your own scenes, matching the vibe of every presentation as needed.
Graphic Pear
Mockups for just about anything you can imagine, plus vector graphics and typefaces.
October November
Lots of beautiful stationery-focused mockups. Also has some lovely cosmetics packaging.