Chatter 

Popular text chat solution that was designed specifically for small and middle local area networks. It doesn't require an Internet connection or a dedicated server, because it utilizes your network, enabling your staff to prioritize and communicate......

ChatterBlocker uses digital audio technology to mask the sound of speech and other distractions so you can focus on your work, not your coworkers. ChatterBlocker does not use noise cancellation. Instead, it masks unwanted conversations using a soothi......

 Chatter