Best Kolab Community Alternatives (36)

Roundcube

Open Source

Roundcube is an open-source webmail client written in PHP. It is designed to work with IMAP and SMTP servers to …

Calendarific

Calendarific is an API that provides access to global holidays and other event data. It allows developers to easily integrate …

Nextcloud Hub

Open Source

Nextcloud Hub is an open source, self-hosted file sharing and communication platform. It provides file storage, sync, and share capabilities, …

MailShogun

MailShogun is an email marketing platform that allows users to create professional-looking email campaigns, manage contacts, track analytics, and automate …

IceWarp

IceWarp is an email server and collaboration suite that provides email, calendaring, contacts, team chat, file sharing, and other capabilities …

Zimbra Collaboration Suite

Open Source

Zimbra Collaboration Suite is an open source email and collaboration platform. It includes email, contacts, calendar, document management, and other …

Kopano

Open Source

Kopano is an open-source groupware suite that provides email, calendaring, contacts, tasks and file sharing. It is designed as an …

Attendexer

Attendexer is a time tracking and productivity software designed for remote teams. It allows users to track time, monitor productivity, …

Contactoffice

Contactoffice is a customer relationship management (CRM) software that helps businesses organize contacts, track sales opportunities, automate marketing campaigns, and …

wtplan

Open Source

wtplan is an open-source web-based project planning and management software. It allows users to create projects, break them into tasks …

Calcurse

Open Source

Calcurse is a cross-platform command-line calendar, scheduling and todo application. It has a text-based user interface that allows users to …

WikiSuite

Open Source

WikiSuite is an open-source enterprise wiki software that includes a wiki engine, CRM, project management tools, spreadsheet, and more. It …

CalenGoo

Subscription

CalenGoo is a free online calendar and scheduling app. It allows users to manage events and appointments, invite others to …

Postaci

Open Source

Postaci is an open-source customer support software designed for small businesses. It allows you to manage customer conversations across multiple …

GMX Calendar

Freemium

GMX Calendar is a free, web-based calendar and scheduling service. It allows users to manage events, appointments, to-do lists, and …

Sanwhole Exchange

Sanwhole Exchange is an email and collaboration platform designed to compete with Microsoft Exchange. It offers features like email, calendar, …

KeepTime

KeepTime is time tracking and project management software for agencies and professional services firms. It allows users to track billable …

CrossBox

Open Source

CrossBox is an open-source web application testing tool that allows you to test web apps across multiple browsers and platforms. …

Greg

Open Source

Greg is an open-source, cross-platform personal information manager and note taking application. It allows you to easily capture ideas, organize …

SMBMail

SMBMail is an email server software designed for small and medium-sized businesses. It is easy to install, has a simple …

OBM

Open Source

OBM (Open Business Management) is an open-source alternative to proprietary business management software suites like SAP or Oracle. It provides …

Microsoft Exchange Server

Microsoft Exchange Server is an email and calendar server software developed by Microsoft. It allows enterprises to host business email, …

Expanding Communication

Expanding Communication is a software that helps improve communication skills for individuals with autism or other developmental disabilities. It uses …

EGroupware

Open Source

EGroupware is an open-source groupware software that provides modules for contacts, calendar, email, wiki, info/news, and project management. It aims …