Open Atrium AlternativesProject Management Tools and other similar apps like Open Atrium

Redmine is a flexible project management web application. Written using Ruby on Rails framework, it is cross-platform and cross-database.

Basecamp is a web-based project collaboration tool that allows groups of people to share files, meet deadlines, assign tasks, and centralize feedback.

An integral part of Microsoft 365, this tool supports scheduling, task, and budget management with workload analysis. It integrates with Microsoft Office, providing robust project tools for both small and large-scale projects across industries.

Share and manage content, knowledge, and applications to empower teamwork, quickly find information, and seamlessly collaborate across the organization.

Redbooth (formerly Teambox), the cloud-based company redefining collaboration and business communications. Easily organize teams and projects to ensure visibility and accountability, enabling your team to get more accomplished.

Comprehensive platform for managing client work operations with features like project management, communication facilitation, resource management, and time tracking. It ensures profit optimization, efficient task planning, and decision-making through data, while preventing burnout by balancing workloads.

Adaptive suite integrating project, IT service, and source code management for technology teams, featuring time tracking, issue and document management, customizable dashboards, third-party integration, agile and waterfall support, and cloud deployment options.

SOGo is groupware server with a focus on scalability and open standards.

SOGo provides a rich AJAX-based Web interface and supports multiple native clients through the use of standard protocols such as CalDAV, CardDAV and GroupDAV.Share your calendars, address books and mails in.

Podio is an online work platform. Combining hundreds of specialized and flexible work apps with messaging, tasks, reporting, workflow and contact management, Podio lets you build and shape the online workplace most fitting to your role.

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.

ActiveCollab is the project management software that gives you complete control over your work. Make Real Work happen now!.

Mavenlink gives your team a cloud-based solution for managing the entire project delivery lifecycle. Complete projects, track time, plan resources, and monitor financial performance — all in a single, user-friendly software.