Loki vs Willow: What are the differences?
What is Loki? Like Prometheus, but for logs (by the makers of Grafana). Loki is a horizontally-scalable, highly-available, multi-tenant log aggregation system inspired by Prometheus. It is designed to be very cost effective and easy to operate, as it does not index the contents of the logs, but rather a set of labels for each log stream.
What is Willow? A powerful, yet lightweight logging library written in Swift, by Nike. Willow is a powerful, yet lightweight logging library written in Swift.
Loki and Willow belong to "Logging Tools" category of the tech stack.
Loki and Willow are both open source tools. Loki with 6.48K GitHub stars and 364 forks on GitHub appears to be more popular than Willow with 1.13K GitHub stars and 61 GitHub forks.