I think most important and useful file format for designer is .psd format, Because in .psd format you can change each and every thing of design according to your requirement. However business card is the first and most important thing of identity. Today i have compiled a list of more than 70 business cards in 30+ packs.
1- 4 Colorful Personal Business Cards Templates
2- Simple Business Card Template
3- 4 Salon Business Cards Templates
4- Free Business Card PSD
5- DS Business Card Template
6- 30+ Business Card Templates in 5 Packs
7- Green business card template with seamless pattern
8- Smoke Business Card
9- Typography Business Card
10- Metal Business cards
11- Oldshool business card
12- Free Business card design
13- 4 Financial Business Cards Templates for Accountants
14- Elegant Business Cards
15- Business Card With Calender
16- Corporate Business Card
17- Business Card for Electrician
18- White Business Card
19- Colorful Vibrant Business Card
20- 6 Adobe Inspired Business Card
21- Black business card
22- Yellow Business Card
23- Free Double Sided Business card design
24- Bokeh Business Card Template
25- Orange Modern Business Card
26- 3D Business Card Template
27- Blueprint Business Card
28- Modern Green Business Card
29- Color Burst Business Card
30- Business card design, Tartan based background
31- Sand Business Card
Find more Psd files here http://www.findfreepsd.com
Thanks for sharing these nice designs!
Great resources! Thank you!
This is amazing! Wonderful designs. Thanks for sharing!
These are beautiful business cards. Thank you!
Awesome collection thanks
these all super..it’s very usefull…..thank u
wah! soooo coooooll!
awesome! thanks you! 
tnx…