StrikeBase is described as 'online work platform for collaboration and project management in one central place with tasks, time-tracking, web and desktop chat, file sharing with comments and more' and is an app in the Office & Productivity category. There are more than 100 alternatives to StrikeBase for a variety of platforms, including Online / Web-based, Windows, iPhone, Android and Mac. The best alternative is Trello, which is free. Other great apps like StrikeBase are Quire (Freemium), Asana (Freemium), Redmine (Free, Open Source) and Basecamp (Freemium).
Nozbe is a to-do list software that can be used by individual users, small teams, and large organizations. The versatile and unified interface makes task management simple and effective. Nozbe is available in your web browser and apps for all major platforms.
Smartsheet is a web-based project management, task management and work collaboration software. Simple Smartsheet harnesses the power of a platform within the simplicity of a spreadsheet. No training required – get up and running in minutes.
Glip is instant messaging for teams and businesses to communicate and get work done at the same time. In Glip you work where your conversations are, so you always know what your team is doing and what needs to get done next.
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.
Tracker is a story-based project planning tool from Pivotal Labs that allows teams to collaborate and react to real-world changes instantly. Its based on agile software methods, but can be used on a wide range of projects.