Cacti vs RRDtool: What are the differences?
What is Cacti? Cacti stores all of the necessary information to create graphs and populate them with data in a MySQL database. Cacti is a complete network graphing solution designed to harness the power of RRDTool's data storage and graphing functionality. Cacti provides a fast poller, advanced graph templating, multiple data acquisition methods, and user management features out of the box.
What is 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.
Cacti and RRDtool can be primarily classified as "Monitoring" tools.
"Free" is the top reason why over 2 developers like Cacti, while over 2 developers mention "Do one thing and do it well" as the leading cause for choosing RRDtool.
RRDtool is an open source tool with 562 GitHub stars and 199 GitHub forks. Here's a link to RRDtool's open source repository on GitHub.