What are the most commonly used event marketing tools?

1. Promoting your event using social media like facebook  & twitter.

2. Brand awarness campaign. 

3. Encouraging your aduience, and your acquaintance list to share your event.

4.Using reporting tools to track your event marketing.

5. Targeting mailers.

Miss Fida actually nailed with her answer. In Addition to what she said: Advertisement & announcements through Newspapers, Magazines, Newsletters, Posters & Flyers, Web announcements, B2B and B2C exclusive invitations to the event.

Event marketing tools:

• Build brand awareness with your own event website or registration page
• Drive traffic with free listings on popular event directories
• Promote your event using social sharing tools like Facebook, Twitter and LinkedIn
• Encourage your audience to share the event with their social circles
• Generate a QR code for instant mobile access to your event site
• Create targeted email campaigns before, during and after the event
• Track the effectiveness of all your event marketing through reporting tools

event is mostly designed to cater for the audience of specific area/region. therefore the best way to create hyphe for any event is through viral approach, snow ball approach, using billboard/road branding of the specific area and distributing handouts regarding the date and time of the event. 

we can also add social media and SMS as well to make the event more viral

I would say the best tool of marketing an even is social sharing tools like Facebook, Twitter and LinkedIn.