Brad Feld, co-founder of Techstars with Jason Seats, managing director of Techstars Austin, photo by Laura Lo

Brad Feld, co-founder of Techstars with Jason Seats, managing director of Techstars Austin, photo by Laura Lo

A sea of green shirts will be seen around Austin this week.

First off, Techstars Austin held its Demo Day featuring 11 companies pitching their ventures at the Austin Music Hall on Wednesday.

Now, Techstars FounderCon is underway, which is the annual gathering of Techstars alumni companies from around the world. This is the largest Foundercon ever, said Jason Seats, managing director of Techstars Austin.

This week, 354 founders, 179 Techstars companies and 60 Techstars staff including three of its founders, Brad Feld, David Cohen and David Brown, will meet today and Friday. The meetings, which are closed to press and the public, feature a series of talks and discussions including a fireside chat with Seats interviewing Bob Metcalfe, professor of innovation at UT, inventor of Ethernet and co-founder of 3Com.

Techstars is hosting a party tonight at Mohawk starting at 7 p.m. and a special Austin Open Coffee meetup at Capital Factory beginning at 8 a.m. on Friday.