Software Alternatives & Reviews


Is a collaboration suite (messaging and groupware).

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Citadel Alternatives

The best Citadel alternatives based on verified products, community votes, reviews and other factors.
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    A fully managed service to easily and securely connect, manage, and ingest data from globally dispersed devices

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    Manage the security of your fleet. With AWS IoT Device Defender, you can audit and monitor device configurations. Get started today.

  3. 14

    Cyberbit provides the most widely used Cyber Range training and simulation platform, as well as SOAR, ICS Security and EDR for IT/OT detection and response.

  4. 15

    Symantec Critical System Protection is a flexible and compact behavioral security engine built with application whitelisting infused with anti-exploits for managed or standalone IoT devices.

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    BroadKey: Key Provisioning Software IP for IoT security. Hardware Root of Trust via unclonable device identities. Deploy any time in device lifecycle.

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    Help protect your connected IoT devices, such as MCUs and crossover modules, development kits, and guardian devices, with Azure Sphere.

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    Entrust Datacard IoT Security products ensure a Trusted Internet of Things by establishing a securely connected ecosystem.

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    Zimbra is trusted by over 500 million users to increase productivity with a complete set of collaboration tools while maintaining total control over security and privacy.

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    Mocana’s comprehensive cybersecurity solutions are trusted to protect more than 100 million ICS and IoT devices.

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    Power data automation, authenticity, and action in the Internet of Everything with Sixgill. Learn more about our IoT application development services.

  11. 11

    A fully fledged, free email server solution, an open source project (GPL v2).

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  13. 15

    Microsoft Exchange Server is a messaging and collaborative software product developed by Microsoft.

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Citadel Reviews

External sources with reviews and comparisons of Citadel

15 Best iRedMail Alternatives 2021
Citadel has many of the amazing features that people typically flock to iRedMail for such as scheduling/calendaring support, note-taking, file storage, and integrated antispam filtering & server-side mail sorting. It also offers multi-domain support, server-to-server replication, TLS/SSL protocol encryption, and Microsoft...
5 Awesome Open Source Groupware Software Suite
Citadel is a free and open source collaboration suite software. It supports protocol such as SMTP, IMAP, Sieve, POP3, GroupDAV, and XMPP. Also includes OpenSSL encryption for additional security. You can run it on your hardware or in the cloud. Feature includes email, calendar/scheduling, address books, bulletin boards...
Read all Citadel reviews → Read all Citadel reviews →

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Author: | Publisher: SaaSHub
Categories: Data Dashboard, Monitoring Tools, IoT Platform