Basecamp, formerly named 37signals, is a privately held American web application company based in Chicago, Illinois.

Slack is an application that helps teams communicate and work together by combining messaging, file sharing, and app integrations in one place. It makes it easy for teams to stay connected and work efficiently, whether they are in the office or working remotely.

Plan is collaboration software that intelligently organizes projects, tasks and meetings from all the tools you and your team use. Plan intelligently organizes projects and tasks from all the tools you and your team use: calendar, email, JIRA, Zendesk, Salesforce, and Github.

The most user-friendly online experience for managing any type of Project. Freedcamp contains one of the most comprehensive feature sets on the market while allowing you to only install the ones your team really needs. We offer innovative new user interfaces that reduce the amount of time required to stay on top of projects

Delightfully simple and deceptively powerful task management. Join 30 million+ people organize billions of tasks in Todoist for their work, education, and personal life.

Trello is a web-based Kanban-style list-making application. Originally made by Fog Creek Software in 2011, it was spun out to form the basis of a separate company in 2014 and later sold to Atlassian in January 2017.

Wunderlist is a cloud-based task management application. It allows users to manage their tasks from a smartphone, tablet, computer and smartwatch.