1. Monitoring Approach: Monit is a proactive monitoring tool that focuses on specific process monitoring and system health checks, sending alerts and taking automated actions when predefined conditions are met. On the other hand, Zabbix is an extensive enterprise-grade monitoring solution that offers monitoring of various metrics, such as network devices, servers, services, and applications, with a centralized approach for visualization and reporting.

2. Ease of Use: Monit is relatively easier to set up and configure compared to Zabbix, which requires more complex configuration due to its extensive features and capabilities. Monit is suitable for users looking for a straightforward monitoring tool, while Zabbix caters to larger organizations with more advanced monitoring needs.

3. Agent-based Monitoring: Monit does not require any agent installation on the target systems as it operates through executed scripts, while Zabbix relies on agent installation for monitoring host metrics. This difference in monitoring approach affects the deployment process and system resource requirements for each tool.

4. Alerting Mechanism: Monit primarily focuses on sending alerts and notifications when specific conditions are met, and it can take automated actions based on predefined rules. In contrast, Zabbix offers a more comprehensive alerting mechanism with the ability to configure triggers based on complex conditions and escalation levels for notifications.

5. Scalability: Zabbix is designed for large-scale deployments, offering features like distributed monitoring, proxy servers, and high availability setups. Monit, on the other hand, is more suitable for smaller environments or single-server monitoring due to its simpler architecture and limited scalability options.

6. Community Support and Development: Zabbix has a larger user community and active development, leading to frequent updates, new features, and wider compatibility with different systems and technologies. Monit, while regularly maintained, may have a smaller community and fewer resources available for troubleshooting and support.

In Summary, Monit is a straightforward monitoring tool focused on process monitoring and system health checks, while Zabbix is a comprehensive enterprise-grade solution with extensive monitoring capabilities and scalability options.