NEW YORK ( TheStreet) -- IBM's ( IBM) fourth-quarter results delighted tech investors, as it spelled good news for software stocks such as Red Hat ( RHT) and Informatica ( INFA). Big Blue's shares rose 5.1% to $205.98 on Wednesday after the tech bellwether beat Wall Street's revenue and earnings estimates, boosted by strength in IBM's software business. Software revenue increased 3% (or 4% adjusted for currencies) to $7.9 billion, while services-unit revenue declined. BMO Capital Markets analyst Karl Keirstead noted that, on the earnings conference call, the tone of IBM's software comments brightened from the previous quarter. Specifically, he said, IBM cited strength in data integration and mainframes. Strong growth in data integration bodes well for Informatica, according to the analyst, while open-source specialist Red Hat stands to gain from uptake of Linux-based mainframes. Informatica shares rose 4.2% to $33.13 on Wednesday, while Red Hat gained 2.6% to $54.15. By contrast, the tech-heavy Nasdaq rose only 0.4%. Oracle ( ORCL) shares crept up 0.1% to $34.97, while Microsoft ( MSFT) climbed 1.3% to $27.51. Overall, though, IBM has won plaudits for its fourth-quarter performance, offering some good news to investors concerned about the tech spending climate. In addition to its strong quarterly numbers, IBM also delivered healthy guidance, projecting fiscal 2013 earnings of $16.70 a share. Analysts surveyed by Thomson Reuters expected earnings of $16.63 a share. IBM CEO Ginni Rometty also reiterated the company's long-term goal of operating EPS of at least $20 in 2015. "Given the uncertain demand environment, IBM's performance shined," Topeka Capital Markets analyst Brian White said in a note Wednesday. "We continue to believe that IBM represents an attractive tech play in a muted IT spending environment with high exposure to recurring revenue from businesses such as software and services."