LogDevice vs Willow: What are the differences?

LogDevice: Log storage for high-durability low-latency streaming use cases (by Facebook). LogDevice is a scalable and fault tolerant distributed log system. While a file-system stores and serves data organized as files, a log system stores and delivers data organized as logs. The log can be viewed as a record-oriented, append-only, and trimmable file; Willow: A powerful, yet lightweight logging library written in Swift, by Nike. Willow is a powerful, yet lightweight logging library written in Swift.

LogDevice and Willow can be primarily classified as "Logging" tools.

LogDevice and Willow are both open source tools. It seems that LogDevice with 1.52K GitHub stars and 136 forks on GitHub has more adoption than Willow with 1.13K GitHub stars and 61 GitHub forks.