Top 15 Group Office Alternative and Similar Softwares | Oct 2021

Open source free community version features : E-mail, Calendar, File sharing, Address book, Tasks, Notes, Newsletters.
PHP based.

Very simple to install and update in Debian 8.x

1. GroupSpaces

GroupSpaces Free group website, membership database, listserv mailing list, payments and more - GroupSpaces is a market leader in online group management software, providing comprehensive, simple to use tools to help manage your group more quickly and efficiently. Easy-to-use, secure & time-saving. Used by 10 000s of membership groups. Try it......

2. Qlubb

Qlubb Qlubbs are the easiest way to communicate and share with other families in your childs classroom......

3. OX Open-Xchange

OX Open-Xchange Open-Xchange Server 6 is the most advanced Linux based Groupware solution f.Open-Xchange Server 6 is superior in the following areas:• Open-Xchange Server 6 offers most comprehensive Groupwarefunctionality based on modern user interface technologies and includesemail, calendaring, contact management, intelligent document sharing,“smart linking” and much more.• The architecture is designed for......

4. Centrium CRM

Centrium CRM Centrium is a user-friendly and flexible CRM. Manage contacts, store history and files.Track deals and tasks. Check out smart notifications, comments and easy to use permissions.Shared ContactsStore all contacts, both people and companies in one place. Share them with your team or keep them private, it`s your choice.Full historyAdd notes,......

5. Citadel

Citadel Is a collaboration suite (messaging and groupware). It is designed to run on open source operating systems such as Linux or BSD. In order to modernize the Citadel platform for the Internet, the Citadel/UX developers added functionality such as shared calendars, instant messaging, and built-in implementations of Internet protocols such......

6. Riseup

Riseup Riseup provides online communication tools for people and groups working on liberatory social change. We are a project to create democratic alternatives and practice self-determination by controlling our own secure means of communications. Email https://mail.riseup.net We provide secure and private email accounts, accessible via the web, shell, IMAP,......

7. Mail.be

Mail.be Sorry, we have added any description on Mail.be......

8. PEPS

PEPS PEPS - The new open source collaboration platform......

9. Centroy

Centroy Centroy provides an online portal for business collaboration. Securely share information with your own branded extranet site. Simple to use. Try for free. We allow companies to collaborate with their customers. Our key differentiators: 1. We're very easy to navigate (our competitors alienate users with a complex user-experience).......

10. phlyMail

phlyMail phlyMail is an advanced webmail and groupware solution featuring unlimited profiles, multiple users, a calendar, contacts list and much more......

11. Atmail Email Server

Atmail Email Server Atmail webmail system offers a webmail client, email server platform and mailserver appliance for Linux, Unix and Windows.Features:WebmailCalendarAddressbookIMAP, POP or Exchange WebSyncSMTP/POP3/IMAP serverExplore the WebAdmin featuresVersions for Linux, VMware, PleskEasy install scripts for popular distributionsAtmail focuses on improving the usability of email and designing high-performance system for SMB/ISP use.......

12. CloudWork

CloudWork CloudWork, previously Tarpipe, is a free integration service that allows anyone to build connections between business and social media apps. As a result businesses are able to automate repetitive tasks, save time and increases productivity with just a few clicks. No technical knowledge is required.It instantly connects data from previously......

13. Casebox

Casebox Open source case and project management system with great document management.......

14. Wimi

Wimi Wimi is the ultimate productivity tool. It integrates all the essential applications to facilitate teamwork. Wimi saves time to managers and entrepreneurs working with teams and clients.Wimi includes many worthy functionnalities :- file sharing - multi-device and cloud synchronization for documents- fine access right management- task management- calendar sync and......

15. Planning Pod

Planning Pod Planning Pod is an online business and project management software app that pulls together 22 easy-to-use tools into one place ... get started today with a FREE trial. It's like a Swiss Army Knife for running a small business, giving you tools to manage contacts, calendars, projects, tasks, files &......