Like any successful startup, the Dig South Interactive Festival is planning for bigger and better things in its second year.

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The festival based in Charleston from April 9 to 13 is expanding from two days to four, introducing new events and increasing the number of presenters in 2014.

Dig South CEO and founder Stanfield Gray, who helped fund the inaugural event through a KickStarter campaign, said the goal of the conference is to introduce the tech world to Charleston and its growing "Silicon Harbor."

"We're a national event with a focus on the Southeast," Gray said.

Representatives from LinkedIn and Buzzfeed will join speakers from Facebook, Twitter, Delta Airlines and TechCrunch, among others, during the two days of speakers. Gray said organizers have confirmed more than 175 presenters this year, compared with 134 last year.

There are two new major events this year.

"HACKCharleston" is a 24-hour hackathon in which programmers compete to see who can design the best app from a nonprofit company's app wish-list. This year's nonprofit partner is the Lowcountry Open Land Trust.

Then there is Wild Pitch, a "Shark Tank"-like event in which entrepreneurs present their ideas to potential investors.

The admission price for all the events is $525; admission for a single day of conferences is $200. There are also free events, such as the Dig Expo and the Space Walk, and concert tickets ranging from $10 to $17.50.

The Dig Expo, which last year filled the College of Charleston's TD Arena with a smorgasbord of vendors and interactive exhibits, will return over two days.

The Space Walk, which will open the conference, is a chance for people to learn more about Charleston's Silicon Harbor companies.

The support from everyone has been tremendous, Gray said.

"We learned this town really wanted a festival like Dig South," Gray said. "The support really overwhelmed us. That was fantastic."

Reach Andy Paras at 937-5589 or on Twitter.