Network Polygraph vs Vector: What are the differences?
Developers describe Network Polygraph as "See what happens in your network. Instant deployment, no extra hardware". Simply export your router's stats to our cloud. All major vendors supported via NetFlow/sFlow/IPFIX/jFlow. On the other hand, Vector is detailed as "On-host performance monitoring framework which exposes hand picked high resolution metrics to every engineer’s browser, by Netflix". Vector provides a simple way for users to visualize and analyze system and application-level metrics in near real-time. It leverages the battle tested open source system monitoring framework, Performance Co-Pilot (PCP), layering on top a flexible and user-friendly UI. The UI polls metrics at up to 1 second resolution, rendering the data in completely configurable dashboards that simplify cross-metric correlation and analysis.
Network Polygraph and Vector belong to "Performance Monitoring" category of the tech stack.
Vector is an open source tool with 3.17K GitHub stars and 230 GitHub forks. Here's a link to Vector's open source repository on GitHub.