VoIP Spear is an online service that monitors your VoIP quality and alerts you when there’s a problem.
VoIP Spear monitors your Internet connection 24x7x365 and presents you easy-to-read charts that show how your VoIP QoS changes over time. It uses packet loss, latency, and jitter values to calculate an industry-standard MOS score between 1 (very poor quality) and 5 (excellent quality).
VoIP Spear can send you email alerts when your VoIP QoS drops too low.
VoIP Spear is free for personal use.