CrunchBase!

AngelList is a platform for startups—started by the dudes who do Venture Hacks.

AcquiredBy provides an insightful view into the tech industry through a list of tech based acquisitions with details like purchase date and amount.

Have you ever wanted to send an email to a potential customer, business partner, employee or investor but couldn't find their email address? We created SellHack to solve this problem. Download our browser extension and create a free account to start finding valid emails. Click the SellHack icon next to the address bar in your browser whenever you need someone's business email. Give us a name and a company and we'll search millions of records while talking to the recipient's mail server to validate an email address within seconds. Stop wasting time guessing or searching hundreds of pages for an email address that probably isn't listed anyways. It's free to start and we have plans tailored to your needs. Happy hacking! »

EquityOwl allows startups and entrepreneurs to trade equity for services and talent. This free platform allows startups to 'hire' talented professionals (even without funding). This allows bootstrapped startups to focus on growth instead of paying salaries.

EquityZen connects shareholders of private companies with investors seeking alternative investments.