M3 vs Statsite: What are the differences?

Developers describe M3 as "Open source metrics platform built on M3DB, a distributed time-series database by Uber". A Prometheus and Graphite compatible metrics platform which includes a native distributed time series database, a highly dynamic and performant aggregation service, query engine and other supporting infrastructure. On the other hand, Statsite is detailed as "C implementation of statsd". Statsite is a metrics aggregation server. Statsite is based heavily on Etsy's StatsD https://github.com/etsy/statsd, and is wire compatible.

M3 and Statsite belong to "Monitoring Tools" category of the tech stack.

Some of the features offered by M3 are:

• Prometheus Integration
• Graphite Integration
• Scalable Clusters (up to billions of metrics)

On the other hand, Statsite provides the following key features:

• Multiple metric types
• Efficient summary metrics for timer data
• Dynamic set implementation

M3 and Statsite are both open source tools. It seems that M3 with 1.95K GitHub stars and 162 forks on GitHub has more adoption than Statsite with 1.73K GitHub stars and 241 GitHub forks.