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2Do lets you take a completely different approach to managing your tasks. With its extremely simple-to-use interface.

5pm is a Web-based project and task management software.

Active Collab is a web-based project management tool.

Aimtracker.com a Time/Goal Management Social Service aims to encourage users setup and achieve their goals.

Airtable is a spreadsheet-database hybrid i.e., the features of a database are applied to a spreadsheet.

Any.do is a life management and productivity app.

Artia is a project management, teams and productivity software platform.

Asana is a web and mobile application designed to help teams track their work.

Assembla is the leading provider for SVN and Perforce hosting and has task management features built into it's platform.

Avaza is a beautiful online software suite with modules for Project Management, Timesheets, Expenses & Invoicing. Access from anywhere, with any device.

Awesome notes is a powerful text and voice note taking application with many great features.

BamBam! is a project management software with integrated time tracking, Agile support, source & deploy, custom workflows and more.