Grafana Loki is described as 'Horizontally-scalable, highly-available, multi-tenant log aggregation system inspired by Prometheus. It is designed to be very cost effective and easy to operate. It does not index the contents of the logs, but rather a set of labels for each log stream' and is a web log analyzer in the network & admin category. There are more than 50 alternatives to Grafana Loki for a variety of platforms, including Linux, Web-based, Windows, Mac and Self-Hosted apps. The best Grafana Loki alternative is Datadog. It's not free, so if you're looking for a free alternative, you could try Graylog or HyperDX. Other great apps like Grafana Loki are Prometheus, Kibana, Laravel Nightwatch and Open Web Analytics.