Top Alternatives to OpenProject

Trello is a web based project management solution.

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

Redmine is a flexible project management web application.

Mailbird is a desktop email client for Windows 7, 8 and 10.

Wrike is an online project management software that gives you full visibility and control over tasks.

Team Clerk is project and task management software.

Apple Mail is an email client included with the operating systems macOS, iOS and watchOS by Apple Inc.

Taiga is a project management platform for agile developers & designers.

Basecamp is a project management web app.

Jira is a proprietary issue tracking product, developed by Atlassian.

Evolution is the official personal information manager for GNOME.

Postbox is powerful, intuitive, ultra-customizable, speedy task manager.

Freedcamp is a web-based project management tool and organization system for single or multiple users collaborating using cloud computing.

Trac is an open source, Web-based project management and bug tracking system.

Mailspring is a multi-platform email client.

Launchpad is a web application and website that allows users to develop and maintain software, particularly open-source software.

Quire is a collaborative task management tool for breaking down goals in hierarchical lists.

Kanban project management software.

Mantis Bug Tracker is a free and open source, web-based bug tracking system. The most common use of MantisBT is to track software defects.

Claws Mail is a free and open-source, GTK+-based email and news client. It offers easy configuration and an abundance of features.

Geary is an email application built around conversations, for the GNOME 3 desktop. It allows you to read, find and send email.

Ora is a real-time all-in-one workspace for teams.

EssentialPIM is a free Personal Information Manager that keeps up with the times and lets you manage appointments, tasks, notes, contacts, password entries, etc.

Microsoft Project is a project management software product, developed and sold by Microsoft. It is designed to assist a project manager in developing a plan, assigning resources to tasks, tracking progress, managing the budget, and analyzing workloads.

The Bat! is an email program for Windows that protects the correspondence and empowers the users to handle large amounts of emails quickly and efficiently.

Airmail is a fast mail client for Mac and iPhone.

Productive.io is a suite of tools to help businesses increase productivity like project management, time tracking tools.

Mutt is a text-based email client for Unix-like systems.

Phabricator is a suite of web-based software development collaboration tools.

Bitrix24 is a free (for small businesses) social enterprise platform.

Zenkit is a platform for collaboration and project management.

ProjectLibre is an open source, freely available project management software system intended ultimately as a standalone replacement for Microsoft Project.

Bugzilla is a web-based general-purpose bugtracker and testing tool.

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

Zimbra Desktop is an offline client that lets you manage various email accounts in one desktop tool.

KMail is the email component of Kontact, the integrated personal information manager from KDE.

Open365 is an all-in-one productivity suite, based on KDE, Seafile, LibreOffice, Docker, and Jitsi.

GQueues is a full-featured online task manager perfect for Google-powered individuals and businesses.

Smartsheet is a software as a service (SaaS) application for collaboration and work management.

FogBugz is an integrated web-based project management system featuring bug/issue tracking, discussion forums, wikis, customer relationship management, and evidence based scheduling.

Kontact is a personal information manager and groupware software suite developed by KDE. It supports calendars, contacts, notes, to-do lists, news, and email.

VisionProject is a Project Management Software that enables you to manage projects in an efficient way, saving you time and money.

Spark is a fast, smart mail manager app.

Polymail is an email application for OS X and iOS known for its clean interface and additional features atop the Gmail platform.

Microsoft Mail and Calendar apps help you stay up to date on your email, manage your schedule and stay in touch with people you care about the most.

MailMate is an IMAP email client for macOS featuring extensive keyboard control, Markdown integrated email composition, advanced search conditions.

TypeApp is a mobile email client app.

SprintGround is a free task management for small software development teams and freelancers.

Goalton.com is a platform for goal and task management.

Soverin is a secure mail hosting platform.