Prometheus and Grafana are two open-source software tools that are commonly used together for monitoring and visualizing metrics and data from various systems and applications.

Prometheus is a time-series database and monitoring system that was developed by SoundCloud in 2012. It is designed to collect metrics and other data from various sources, store that data in a time-series database, and then allow users to query and visualize that data in real-time. Prometheus has a powerful query language called PromQL, which allows users to perform complex queries and aggregations on their data.

Grafana is a web-based data visualization and analysis platform that can be used to create dashboards and visualizations based on data from various sources, including Prometheus. Grafana supports a wide range of data sources and provides a variety of built-in panels and visualization options to help users create meaningful dashboards and reports. Grafana also has a large and active community that has created many plugins and integrations with other data sources and tools.

Together, Prometheus and Grafana provide a powerful and flexible solution for monitoring and visualizing metrics and data from various systems and applications.

Any tools other options?

Yes, there are other tools that can be used for monitoring and visualization of metrics and data. Here are a few examples:

1. InfluxDB: A time-series database that can be used to store and query metrics and other time-based data.

2. Zabbix: A monitoring tool that can be used to monitor the performance and availability of various systems and applications.

3. Nagios: A monitoring tool that can be used to monitor the health and performance of various systems and applications.

4. Datadog: A cloud-based monitoring and analytics platform that can be used to monitor various systems and applications.

5. ELK Stack: A collection of open-source tools including Elasticsearch, Logstash, and Kibana, which can be used for log analysis and visualization.

Each tool has its own strengths and weaknesses, and the choice of tool depends on the specific use case and requirements. It is recommended to evaluate multiple tools and select the one that best fits your needs.

which is free

Many of the tools mentioned above have free and open-source versions available, including:

1. Prometheus
2. Grafana
3. InfluxDB
4. Zabbix
5. Nagios

Datadog offers a free trial period, but it is a paid service. ELK Stack is also open source and free, but setting it up and configuring it can be more complex compared to other options.

It’s worth noting that while these tools may have free versions available, there may be limitations or restrictions on their use. For example, some free versions may have a limit on the number of data sources or metrics that can be monitored, while paid versions may offer more features and scalability.