外掛

Gratisfaction- Loyalty, Rewards , Referral, Birthday and Giveaway Program

Gratisfaction- Contests Giveaways Referral Loyalty Rewards and Birthdays Program

Photo Contest | Competition | Video Contest

Simple Giveaways – Grow your business, email lists and traffic with contests

Socialman

Interact: Embed A Quiz On Your Site

SweepWidget Contests, Giveaways, Sweepstakes, Raffles, Competitions

WP Keys Giveaway

WP-Giveaways

Pick Giveaway Winner

Meetup Winner!

Giveaway Helper

Contests & Giveaways – WordPress Contest Plugin

Give Coupon to Friend

And The Winner Is…