Audience

Businesses needing a powerful Mail Server solution

About Citadel

Email, collaboration, groupware, and content management - up and running in minutes, on your own hardware, or in the cloud. Citadel is easy, versatile, and powerful, thanks to its exclusive room-based architecture. No other platform seamlessly combines so many different features using this familiar and consistent metaphor. Citadel is 100% open source software using the GNU General Public License. It's not a crippled, cut-down version of some expensive "enterprise" edition. The software you download here is the very best available, and it's all free software.

Pricing

Starting Price:
Free
Free Version:
Free Version available.

Integrations

Ratings/Reviews

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Company Information

Citadel
www.citadel.org

Videos and Screen Captures

Citadel Screenshot 1
Other Useful Business Software
Gemini 3 and 200+ AI Models on One Platform Icon
Gemini 3 and 200+ AI Models on One Platform

Access Google's best plus Claude, Llama, and Gemma. Fine-tune and deploy from one console.

Build generative AI apps with Vertex AI. Switch between models without switching platforms.
Start Free

Product Details

Platforms Supported
Linux
Training
Documentation
Support
Online

Citadel Frequently Asked Questions

Q: What kinds of users and organization types does Citadel work with?
Q: What languages does Citadel support in their product?
Q: What other applications or services does Citadel integrate with?
Q: What type of training does Citadel provide?
Q: How much does Citadel cost?

Citadel Product Features