While Viacom (NYSE: VIA) battles Cablevision (NYSE: CVC) and Time Warner Cable (NYSE: TWC) over those MSOs' efforts to deliver Viacom programming via Apple's (Nasdaq: AAPL) iPad device, NBC and ABC have launched their own iPad apps--although neither app focuses on live streaming TV.
NBC Live offers second-screen social features and interactivity that syncs with shows being televised and ABC Video Bookstore packages archived news footage with photo galleries and interactive timelines. Both applications are now live on Apple's App Store, and are free to download (consumers can make use of ABC's in-app payments to buy individual video books).