Vicious rivals are making peace in the tech world. IBM and Apple have been working together to manufacture iPad and iPhone apps for IBM customers, including Citigroup and Sprint. It's an example of a business strategy known as 'coopetition,' defined as 'collaboration between business competitors, in the hope of mutually beneficial results.' Apple wants to make inroads into the corporate market for PCs, and IBM wants to use Macs and iPads, fitted with IBM software for use by IBM corporate clients. A big selling point to corporations is that it's much easier to manage and integrate Macs than PCs in a corporate environment. With love in the air in Silicon Valley, we decided to check TheStreet Quant Ratings for stocks in the IT consulting sub-sector, which would be good investments. Number 3 is CGI Group. With an 'A' rating, the company's strengths can be seen in its attractive valuation levels and increase in net income. 2nd is, Amdocs Limited. This rating is an 'A+.' Amdocs thrives in its solid stock price performance and revenue growth. Number 1 is Accenture. This too has an 'A+' rating. The company flourishes in its revenue growth and solid stock price performance. TheStreet Ratings are algorithmic stock picks based on 32 major data points. S&P 500 stocks rated 'buy' yielded a 16-and-a-half-percent return in 2014, beating the S&P 500 Total Return Index by more than 300 basis points. For the full reports on these stocks, you can check out