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Taiga is a full featured project management platform for startups and agile developers & designers who want a simple, beautiful tool that makes work truly enjoyable.

Asana is a web and mobile collaborative work management app that goes beyond typical collaboration software by enabling teams to track everything they're working on. With tasks, projects, conversations, and dashboards, Asana lets your team know who's doing what by when to help you get results. Use Asana for team communication, setting meeting agendas, running brainstorms, sharing files, or creating shared calendars--anything you can think of. You can also add partner integrations to customize Asana for your team with functionality like Gantt charts, time-tracking, and Google calendar sync. Asana is available on web, iOS, and Android and is free for teams of up to 15 people. »

ONLYOFFICE Desktop Editors is an open-source office suite that combines text, spreadsheet and presentation editors, distributed under AGPL license v3. You can download and use them for home, government, educational and commercial purposes without restrictions.Features:· One pack - three editors - multiple features - Create, view and edit text documents, spreadsheets and presentations of any size and complexity. Deal with multiple files within one and the same window thanks to the tab-based user interface.· Compatibility with MS Office and OpenDocument formats - Work with most popular formats: DOC, DOCX, ODT, RTF, TXT, PDF, HTML, EPUB, XPS, DjVu, XLS, XLSX, ODS, CSV, PPT, PPTX, ODP.· Quick access to broad collaborating capabilities - Connect to server and collaborate on documents with your team: co-edit in real time, review, comment and interact using chat.· Third party add-ons - Create templates, insert video from YouTube and do even more. Extend ONLYOFFICE functionality with integrated add-ons or create your own one.· Support for all popular platforms - Windows 10, 8.1, 8, 7, XP, 2003, Vista (both 32-bit and 64-bit), Debian, Ubuntu and derivatives, RPM-based Linux distribution, Mac OS 10.10 or higher.· Updates and technical support - Free regular updates. Fast and professional assistance for all technical and functional issues via Forum. »

Wekan, formerly LibreBoard, is an open-source and collaborative Trello -like kanban board application.

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

Open source Trello-like kanban board. Based on Restya platform.

Opensource task & productivity management tool for startups, engineered based on the concepts of OKR.

Quire is a new-generation collaborative task management tool for organizing tasks in a tree-like structure wrapped in simple and user-friendly UI.

Freedcamp is the first completely free alternative to Basecamp. Freedcamp offers an app store where you can install To-Do's, Discussions, Milestones, Time Tracking, and Calendar for free! Project management has never been this sweet.

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