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.
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Moyo Studio
Moyo is absolutely fantastic. They partner with different photographers to always create top notch mockups.
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Harmonais Visuals
Deep, moody and oh so luxurious.
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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.
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Graphic Pear
Mockups for just about anything you can imagine, plus vector graphics and typefaces.
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October November
Lots of beautiful stationery-focused mockups. Also has some lovely cosmetics packaging.