Taskade - Make lists, organize your thoughts, and be inspired to get things done. Taskade is a collaborative space for your tasks.
BlockSurvey - Privacy-focused surveys, polls & forms
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
Simple Poll - The easiest way to create polls in Slack
Balloon - A drop box for your Dropbox
Slack Surveys by Standuply - A simple, powerful bot for recurring surveys on Slack 📝