Unified Inbox is described as 'cloud based unified communication & social collaboration platform that centralizes external conversations, social engagement and internal team collaboration into one single experience across desktop and mobile devices Unified Inbox enables employees to' and is an website in the Network & Admin category. There are more than 25 alternatives to Unified Inbox, not only websites but also apps for a variety of platforms, including Windows, Mac, Android and iPhone. The best alternative is Trello, which is free. Other great sites and apps similar to Unified Inbox are Redmine (Free, Open Source), Basecamp (Freemium), ZenTao (Freemium, Open Source) and ActiveCollab (Freemium).
ZenTao is an open source project management tool, supporting Scrum. It integrates product management, project management, bug management and QA management, etc., covering all lifecycle of software development.
Ora is an all-in-one realtime workspace for teams. It has everything your team might need to be productive. Task management, kanban, time tracking, chat, reports on projects and team productivity. It is powerful, yet simple and easy to use.
This is online project management web application for personal or business usage. There is a dashboard, project and task lists, messaging system, advanced reports and many other useful features. You can collaborate with your co-workers easily.
5pm is a web based project management application with a smart customizable interface. Email integration, iCalendar and RSS feeds, Timeline view and Reports are just a few features to mention. Free trial (no credit card required) is available.