Totango - Totango is a Customer Success Software Platform
Todo.txt - Track your tasks and projects in a plain text file, todo.txt. A todo.
Churnzero - ChurnZero is the Customer Success Platform built for growing SaaS and subscription businesses.
Task Coach - Task Coach is a simple open source todo manager to keep track of personal tasks and todo lists.
Planhat - Customer success has changed. Meet the modern Customer Platform!
Strikethru - Strikethru is a kind of to-do list notebook for managing work lists and staying updated with the important tasks.