This online excel sheet contains a compare of all current RMM products. The sheet is completely community sourced and based on data by actual users.
Link: http://rmm.msp.zone
CyberDrain is a techblog that contains PowerShell scripts, resources for MSPS, and announcements important to technichians at MSPs. CyberDrain also organizes several events such as the CyberDrain CTF.
Link: https://cyberdrain.com