The app search engine Quixey is close to getting $60 million in funding from several investors, including Alibaba Group, Twitter, and SoftBank. The funding, which has yet to close, would value the startup at $600 million if and when it is complete. Re/Code reports that other participants in this round include an investment arm of financier George Soros, Goldman Sachs and GGV Capital. Both Alibaba and GGV are existing investors, along with Eric Schmidt's Innovation Endeavors.