Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
Planet Web Solution - Planet School Management is a smart ERP system that provides various functionalities for the user to interact within a single platform and access multiple types of models related to the year p and supported module for the school management system.
Notion - All-in-one workspace. One tool for your whole team. Write, plan, and get organized.
Fedena - Fedena is a multipurpose college and school management software, it is used by 40K+ education institutions worldwide to automate administration & academic-related activities.
Slack - A messaging app for teams who see through the Earth!
EZ School Apps - EZ School Apps developed inexpensive, cloud based school admin software such as school lunch ordering, substitute management, after school care, and online payments.