1. Tab Button

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2. Video Player Concept

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3. Music Player Concept

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4. FREEBIE – Round Alu Buttons

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5. PRETTY LITTLE CALENDAR (PSD)

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6. Simple Process Psd

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7. Vertical Navigation Menu (PSD)

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8. Login page

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9. Lion buttons PSD

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10. Calendar Template

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11. Buttons & drop-down

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12. Power button

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13. SLEEK MEDIA PLAYER GUI

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14. Full Install Psd

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15. Nice download button

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16. Simple and Beautiful Login Form PSD

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17. Photoshop Progress Bar Slider

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18. SIMPLE SCROLLBARS (PSD)

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19. Black UI Icon Set

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20. Simple Player Buttons Psd

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Source: https://alexwolkov.ru/blognews/Photoshop/Web_Elements/Free_PSD_Web_UI_Element_15