Sapient Corp, Cambridge, Massachusetts systems integrator, reported second-quarter net income up 81% at $2.9m on revenue up 82% at $18.8m. Six-month net income rose 92% to $5.4m on revenue up 80% at $35.5m. Earnings per share rose 77% to $0.23 for the quarter and 72% to $0.43 for the six months.