Splunk is an application for collecting, analyzing, and visualizing machine-generated data from websites, applications, servers, networks, and other data sources. It provides an easy-to-use web interface for creating custom dashboards, reports, and visualizations, as well as for running ad-hoc searches and alerts. Splunk can also be used to monitor and analyze the performance of network and system components such as routers, switches, and firewalls. It can also be used to identify trends and anomalies in network traffic, detect security threats and attacks, and troubleshoot application and system issues. Splunk is a powerful and versatile tool for network and systems administrators.
With Sematext Cloud / Enterprise you can use any log sending format or sender you want (syslog, Logstash, Fluentd, Flume, nxlog, Filebeat). In addition, Sematext allows you to correlate logs with performance metrics quickly, easily and without contracts or commitments.
Grafana is NOT a log monitor. It is just a graphical solution for logs and metrics from many different data sources, but you will need solutions to get those logs and metrics in the first place.
Much faster. Better overall user interface.
Kibana is a web user interface for exploring Elasticsearch queries and is a component of the ELK stack. The closest analog is the log stash, which processes and tags log files.
Unlike Splunk, Loom proactively provides its users with detected problems and their recommended resolutions, rather than allowing them to search for problems manually by querying the data.
It is a hosted and local centralized logging solution.