Horde Groupware

Name: Horde Groupware
Brand: Horde Groupware

Open-source webmail, calendar, and collaboration suite

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Our Verdict

Best for

Tech-savvy SMBs

Skip if

Non-technical users

What is Horde Groupware?

Horde Groupware is a web-based collaboration platform that provides email, calendar, contacts, tasks, and notes in a single interface. It is built on the Horde PHP framework and can be self‑hosted on any standard web server. The suite supports IMAP/SMTP integration, shared calendars, and granular permission controls, making it suitable for organizations that need a customizable, privacy‑focused alternative to commercial groupware solutions.

SpecificationsAI-estimated

free tier✅ Yes

Key Features of Horde Groupware

Provides a full-featured webmail client with support for IMAP, SMTP, and multiple mail accounts.

Offers shared calendars with event invitations, reminders, and resource booking.

Includes a contacts manager that can import/export vCard and synchronize with LDAP directories.

Supports task lists and notes that can be shared among users with fine-grained permissions.

Allows administrators to define custom groups and assign role‑based access to folders and features.

Integrates with external authentication systems such as LDAP, CAS, and OAuth.

Extensible via a large library of plugins for additional functionality like file storage or CRM integration.

Runs on any standard LAMP stack, making deployment on shared hosting or virtual private servers straightforward.

Use Cases for Horde Groupware

Small Business Collaboration

Teams use Horde to manage email, calendars, and contacts without paying subscription fees.

Educational Institutions

Schools provide students and staff with a unified communication platform hosted on campus servers.

Non‑Profit Organizations

Non‑profits benefit from a free, privacy‑focused suite for internal coordination.

Personal Self‑Hosting

Individuals host their own email and calendar to retain full control over data.

Pros & Cons of Horde Groupware

Pros

Completely free and open-source
Highly customizable via plugins
Runs on standard LAMP environments
Strong permission and sharing controls

Cons

Requires technical expertise to install and maintain
User interface feels dated compared to modern SaaS tools
Limited mobile app support; relies on web browser

Frequently Asked Questions

Is Horde Groupware suitable for large enterprises?

It can scale, but large deployments often require dedicated IT staff for maintenance and performance tuning.

Can I integrate Horde with Microsoft Exchange?

Horde can connect to Exchange via IMAP for email and can sync calendars using CalDAV if Exchange is configured accordingly.

Does Horde offer a hosted service?

The project itself is self‑hosted; however, third‑party providers may offer managed Horde hosting.

What browsers are supported?

Modern browsers like Chrome, Firefox, Edge, and Safari are fully supported.

Pricing Overview

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Free

Detailed plans are not listed. Visit the official website for pricing information.

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