RRDtool vs Zabbix: What are the differences?
RRDtool: High performance data logging and graphing system for time series data. RRDtool lets you log and analyze the data you gather from all kinds of data-sources (DS). The data analysis part of RRDtool is based on the ability to quickly generate graphical representations of the data values collected over a definable time period; Zabbix: Track, record, alert and visualize performance and availability of IT resources. Zabbix is a mature and effortless enterprise-class open source monitoring solution for network monitoring and application monitoring of millions of metrics.
RRDtool and Zabbix can be primarily classified as "Monitoring" tools.
RRDtool and Zabbix are both open source tools. It seems that RRDtool with 571 GitHub stars and 199 forks on GitHub has more adoption than Zabbix with 514 GitHub stars and 187 GitHub forks.