There are a lot of companies out there - try poking around job boards, look at the companies that post on HN Who's Hiring?, and Google with relevant terms for y

There are a lot of companies out there - try poking around job boards, look at the companies that post on HN Who's Hiring?, and Google with relevant terms for your interest (ex) software engineering internship summer 2015 san francisco). If you attend university, then your career center should be able to assist you. If you're in high school, you're well ahead of the curve, so don't sweat it if you don't secure an internship this summer.