Harvard Business School’s Arthur Rock Center for Entrepreneurship has announced the winners of its bi-annual Rock Accelerator Program, granting $5,000 to 11 lucky student startups, whose products range from mobile health apps to all-natural zero-calorie cocktail mixers.

This semester’s winners are part of the second round of the program’s fourth annual competition, which launched in 2010 to support students innovating around the lean startup methodology. This methodology uses rapid prototyping, with the goal of producing a test product as quickly as possible in the most effective way.

Ninety-six teams consisting of first- and second-year MBA students submitted applications to this term’s competition. In addition to the cash prize, the winning teams will be matched to mentors, attend four peer exchange workshops and participate in a final wrap-up session to conclude their learning experiences.

Below are the 11 startups that won big, via Harvard Business School:

After Flowers (Jennifer Soffen, MBA 2014, and Ben Sack) is a marketplace for businesses and individuals to purchase flower arrangements used at an event to eliminate waste and return money to the hosts.

Alfred Club (Jessica Beck, Marcela Sapone, and Emma Toshack, all MBA 2014) is a concierge service individuals can use for their daily and weekly tasks, including dry cleaning, house cleaning, groceries, laundry, and more.

Be Mixed (Jennifer Ross, MBA 2014, and Cristina Ros Blankfein, MBA 2015) is a line of natural zero-calorie cocktail mixers in fresh flavors.

Carewrite (Eva Luo, MD/MBA 2015, David Mou, MD/MBA 2014, Linda Wang, MD/MBA 2014, Luke Marker, MBA 2014) is a mobile application that empowers caregivers to better coordinate and manage the care of their loved ones.

LifeGuides (Mohit Rajani, Nicholas Christman, and Phil Strazzulla, all MBA 2014) is a web site providing advice on life’s most challenging events from people who have gone through it themselves – from transitioning from military to civilian life to getting married to having your first child.

Main Street Fund (Tewfik Cassis and Dimitri Dadiomov, both MBA 2015) is an online peer-to-peer lending platform for small business loans.

MBAs Across America (Michael Baker and Casey Gerald, both MBA 2014) is a movement of MBA students and entrepreneurs working together to reinvent business school and revitalize America.

Pumberly (Nick Alexander, MBA 2015) is a mobile application that coordinates fast, trust-worthy deliveries of goods from local stores and restaurants between friends and neighbors.

Right Side Health (Rick McMullen and Doug Raicek, both MBA 2014) is a mobile and web application that will allow health and wellness coaches to stay on top of their clients’ progress even when they are not with them. The first product, Steps, allows coaches to build health plans for clients and allows the clients to communicate their progress in just a few seconds per day.

The Last Rez (Ricky Pellegrini, MBA 2014, and Tyler Faux) is a new approach to restaurant reservations that maximizes efficiency for diners and profitability for restaurants.

TinyJaunt (Hannah Ma and Lindsay Ullman, both MBA 2015) helps travelers explore new cities like locals by providing beautiful, step-by-step itineraries built by local experts and tailored to specific interests and preferences. TinyJaunt also links travelers with in-country concierges that can offer unique recommendations, personal stories, and logistical assistance.

Image via Harvard Business School