It basically invents a log level higher than INFO and shows you just those logs from all your sources. You can filter by Zipkin trace/span ids or by any number of application-defined 'key:value' tags (e.g. user:1234). You can even just use the key:value tags from all your services and see relevant logs even if you haven't implemented distributed tracing. Provides Java, JavaScript, Go client libraries and a REST API.

  [0] https://www.producthunt.com/posts/quicklog-io
  [1] https://quicklog.io