Below is a list of the student ventures that are 'in business' - having raised initial investment capital or recruited their first customers:
AccuScholar (school administrations software)
Founder: Max Uhlenhuth (YC '12)
Alea Diagnostics (early-stage identification of autism)
Founder: Linda Craib (SOM '10)
BookSaver (online textbook sales) - YEI Incubator Graduate
Co-founders: Chris Murphy (YC '12) and Greg Hausheer (YC '12)
Career Cadence (career direction and planning)
Co-founders: Alan Carniol (SOM '10) and Paul Holzer (SOM '09)
Chairigami (cardboard furniture) - YEI Incubator Graduate
Founder: Zachary Rotholz (YC '11)
Checked Twice (online gift exchange organizer)
Founder: Andrew Swick (SOM '11)
Cheeseboy: Grilled Cheese To Go (quick-serve food franchise)
Founder: Michael Inwald (SOM)
Cube Knowledge (educational software)
Founder: James Rapp (MED ’10)
Desmos (virtual whiteboard and teaching tools) - YEI Incubator Tenant
Co-Founder: Eli Luberoff (YC '09)
Efficiency 2.0 (energy efficiency and social software provider)
Founder: Tom Scaramellino (LAW '08)
Encendia (biochar soil additive) - YEI Incubator Tenant
Co-founders: Justin Freiberg (FES '10) & Michael Sesko (FES/SOM'10)
The Green Bride Guide (#1 green weddings website and vendor directory)
Founder: Kate Harrison (FES '09)
GSM Nation (contract-free wireless devices)
Founder: Ahmed Khattack (YC '10)
Gurufi (marketplace for essay editing)
Founders: James Park (YSM '09), Stephane Budel (GRD '08), Brian Fobi (GRD '10), Daniel Vekther (YC '08)
Hadapt (HadoopDB cloud-optimized parallel database)
Founder: Justin Borgman (SOM '10)
Hopnear (global guides for art and design)
Co-Founder: Tiffany Dehejia (SOM '08)
Infinitronics (wireless broadband device) - YEI Incubator Graduate
Founder: Ahmed Khattack (YC '10)
Hopnear (global guides for art and design)
Co-Founder: Tiffany Dehejia (SOM '08)
The Little Salad Shop (salads, smoothies and dry goods)
Co-founders: Etkin Tekin (YC ’12), Tiffany Ho (YC '12) and Jerry Choinski (YC '12)
Oasys (Water purification using forward osmosis)
Co-Founder: Rob McGinnis (ENG '09)
oSnapps (augmented reality college tour iphone app)
Founder: Max Uhlenhuth (YC '12)
Paper G (online local advertising platform) - YEI Incubator Graduate
Founders: Victor Cheng (YC ’08), Ka Mo Lau (YC '11) and Victor Wong (YC '11)
Pixtapes (online group photo album) - YEI Incubator Graduate
Founders: Steven Reis (SOM '12) and Michael Mossoba (SOM '12)
Roammeo (map-based local event aggregator) - YEI Incubator Graduate
Founders: Jessica Cole (YC ’12) and Harriet Owers-Bradley (YC '11)
SilviaTerra (forest inventory management software)
Co-founders: Max Uhlenhuth (YC '12) and Zack Parisa (FES '09)
SocialSci (online scientific surveys)
Co-founders: Leon Noel (YC '10) and Harley Trung (YC '10)
StageGrade (online resource for play reviews)
Co-Founder: Doug Rand (LAW/SOM '10)
Stickk.com (software enabling commitment contracts)
Founder: Jordan Goldberg
TrazeTag (customizable RFID tag)
Co-founders: Priyanka Karnik (GRD'10), Leandro Margulis (SOM'10) & Nathaniel Schwalb (YC'12)
WakeMate (smart alarm clock that wakes an individual at optimal point in REM cycle)
Founder: Arun Gupta (YC)
YouRenew (buy back and resell eletronics company) - YEI Incubator Graduate
Founders: Bob Casey (YC '11) and Richard Littlehale (YC ’10)
Please note only Yale student founders are listed here.