Alternatives to iRedMail
Compare iRedMail alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to iRedMail in 2026. Compare features, ratings, user reviews, pricing, and more from iRedMail competitors and alternatives in order to make an informed decision for your business.
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1
Axigen
Axigen Messaging
Offer your customers secure, business-level email hosting with various value added services. An excellent solution for SPs, suitable for thousands to millions of users. Acquire new customers by offering a premium email server solution with a high degree of flexibility, allowing you to automate it within your existing infrastructure. Manage your email, organize and share calendars, sync your mobile devices, all based on a secure and powerful mail server. The perfect answer for businesses of all sizes. Axigen is quite knowledgeable, out of the many hats it wears, take a peek inside and choose what fits you. Manage your email and get stuff done easily with calendars, tasks or notes. Enjoy desktop usability in your browser via keyboard navigation and shortcuts, drag-and-drop, "live" email list view, frequent folders, email filters, out-of-office messages, individual blacklist / whitelist.Starting Price: $266 per year -
2
Modoboa
Modoboa
Regain your independence and protect your privacy by installing your own email server. It takes less than 10 minutes! Create your mail server for free in less than 10 minutes with Modoboa When it comes to create a mailbox, you generally have several solutions: - Use the services offered by Internet providers (Orange, Vodafone...) of infrastructure providers (OVH, Gandi...) with a monthly or annual subscription. However, customization and configuration possibilities, domains and mailboxes number are limited. - Use the services of free email providers (Gmail, Live, Yahoo...) which are limited and your data is used for commercial purposes. - Install your own email server, which requires important technical knowledge to setup and configure the system. Modoboa is an alternative to those 3 options. It frees you from dependence on email providers and makes accessible to all the creation his own secure email server. The whole thing, in less than 10 minutes and freely.Starting Price: Free -
3
Mail-in-a-Box
Mail-in-a-Box
Mail-in-a-Box lets you become your own mail service provider in a few easy steps. It’s sort of like making your own gmail, but one you control from top to bottom. Technically, Mail-in-a-Box turns a fresh cloud computer into a working mail server. But you don’t need to be a technology expert to set it up. Each Mail-in-a-Box provides webmail and an IMAP/SMTP server for use with mobile devices and desktop mail software. It also includes contacts and calendar synchronization. The box also includes other standard mail functionality like spam protection (spam filtering and greylisting), mail filter rules, email client autoconfiguration, and automated backups to Amazon S3 and other services. The box also includes automatic DNS configuration when you let it become your nameserver so that it can set important DNS records for mail deliverability and security including SPF, DKIM, DMARC, and MTA-STS. When enabled, DNSSEC (with DANE TLSA) provides a higher level of protection.Starting Price: Free -
4
Mailu
Mailu
Mailu is a simple yet full-featured mail server as a set of Docker images. It is free software (both as in free beer & as in free speech), open to suggestions and external contributions. The project aims at providing people with an easily setup, easily maintained and full-featured mail server while not shipping proprietary software nor unrelated features often found in popular groupware. Main features include: Standard email server, IMAP and IMAP+, SMTP and Submission with autoconfiguration profiles for clients Advanced email features, aliases, domain aliases, custom routing Web access, multiple Webmails and administration interface User features, aliases, auto-reply, auto-forward, fetched accounts Admin features, global admins, announcements, per-domain delegation, quotas Security, enforced TLS, DANE, MTA-STS, Letsencrypt!, outgoing DKIM, anti-virus scanner, Snuffleupagus, block malicious attachments Antispam, auto-learn, greylisting, DMARC& SPF, anti-spoofingStarting Price: Free -
5
Poste.io
analogic
You can have a fully functional mail server installed in a few minutes, mostly waiting for scripts to do the work. The whole package is designed with reasonable defaults to get you up and running quickly, without having to know the internals and without making decisions that could break the email system. User data and configuration is strictly separated from binaries. User database is stored in SQLite database - in file. This makes Poste.io fully compatible with external storage. Migration, backups or updates are therefore very easy and mostly consist of files manipulation. Poste.io has been built from the ground up with security in mind. Internet history is littered with painful security incidents, so we traded old email client compatibility and insecure authentication methods for features that meet today's for features that meet modern security requirements.Starting Price: Free -
6
hMailServer
hMailServer
hMailServer is a free, open source, e-mail server for Microsoft Windows. It's used by Internet service providers, companies, governments, schools and enthusiasts in all parts of the world. It supports the common e-mail protocols (IMAP, SMTP and POP3) and can easily be integrated with many existing web mail systems. It has flexible score-based spam protection and can attach to your virus scanner to scan all incoming and outgoing email.Starting Price: Free -
7
mailcow
mailcow
mailcow: dockerized is an open source groupware/email suite based on Docker. mailcow relies on many well known and long used components, which in combination result in an all around carefree email server. Each container represents a single application, connected in a bridged network.Starting Price: Free -
8
Courier
Double Precision, Inc.
The Courier mail transfer agent (MTA) is an integrated mail/groupware server based on open commodity protocols, such as ESMTP, IMAP, POP3, LDAP, SSL, and HTTP. Courier provides ESMTP, IMAP, POP3, webmail, and mailing list services within a single, consistent, framework. Individual components can be enabled or disabled at will. The Courier mail server now implements basic web-based calendaring and scheduling services integrated in the webmail module. Advanced groupware calendaring services will follow soon. The Courier mail server's source code should compile on most POSIX-based operating systems based on Linux, and BSD-derived kernels. The Courier mail server should also compile on Solaris and AIX, with some help from Sun's or IBM's freeware add-on tools for their respective operating systems. The Courier mail server evolved out of several related projects, that merged together (more on that later). The Courier mail server implements SMTP extensions for mailing list management.Starting Price: Free -
9
Apache James
The Apache Software Foundation
James stands for Java Apache Mail Enterprise Server. It has a modular architecture based on a rich set of modern and efficient components which provides at the end complete, stable, secure, and extendable Mail Servers running on the JVM. Create your own personal solution of email treatment by assembling the components you need thanks to the Inversion of Control mail platform offered and go further customizing filtering and routing rules using James Mailet Container. The Apache James project wires together the different libraries composing James to provide running services, ready to download on the Apache mirrors.Starting Price: Free -
10
Muon SSH Terminal
Subhra Das Gupta
An easy and fun way to work with remote servers over SSH. Muon is a graphical SSH client. It has an enhanced SFTP file browser, SSH terminal emulator, remote resource/process manager, server disk space analyzer, remote text editor, huge remote log viewer, and lots of other helpful tools, which makes it easy to work with remote servers. Muon provides functionality similar to web-based control panels but, it works over SSH from the local computer, hence no installation is required on the server. It runs on Linux and Windows. Muon has been tested with several Linux and UNIX servers, like Ubuntu server, CentOS, RHEL, OpenSUSE, FreeBSD, OpenBSD, NetBSD, and HP-UX. The application is targeted mainly toward web/backend developers who often deploy/debug their code on remote servers and are not overly fond of complex terminal-based commands. It could also be useful for sysadmins as well who manage lots of remote servers manually.Starting Price: Free -
11
MailSite Fusion
Rockliffe Systems
MailSite Fusion is a Windows email, calendar and contact server with over-the-air push to all types of smartphones, Full native Outlook sync, a sophisticated AJAX web client and a calendar and contact sharing server, which can synchronize and publish to many other clients. MailSite has been voted in the top 3 mail server products by readers of Windows IT Pro Magazine 3 years running. Your email services are critical to your organization. So you need to be sure that you select a quality product, from a company with a proven track record in communication software. So, why this mail server? Because Rockliffe understands your concerns, we have been specializing in developing and refining our email server and email security software for business and service providers since 1995. Built from the ground up to be fast, stable and secure, MailSite Fusion is ready to meet the needs and requirements that matter to you most.Starting Price: $90 per year -
12
SmarterMail
SmarterTools
SmarterMail is the ideal Microsoft Exchange alternative. It’s the only business email server on the market that offers native support for Exchange protocols: MAPI, EWS, and EAS, without requiring any additional software or plug-ins for Microsoft Outlook or other desktop or mobile clients. It delivers all the features of Exchange at a fraction of the cost. SmarterMail also includes audio/video group chat and Online Meetings for team collaboration at no extra charge. Its newest feature, the SmarterMail Marketplace, enables seamless integration with platforms like OnlyOffice, Collabora, and AI tools such as OpenAI’s ChatGPT. Available for both Windows and Linux, SmarterMail has lower hardware requirements, superior stability, and reduced maintenance costs. It’s the perfect solution for businesses of any size or industry seeking Exchange-level functionality, without the high costs.Starting Price: $500.00/one-time -
13
Pinguzo
Pinguzo
Downtime can happen on your servers and websites. Get notified instantly to take corrective steps. More than 800 users are already using Pinguzo to monitor servers and their websites. Join for free and check your server's health and websites uptime, availability, and performance. Monitor your websites uptime, load time, average response times, etc. Install the Pinguzo agent and get detailed server information and graphs. We can send alerts over e-mail, SMS, PagerDuty, Pushbullet, Slack, HipChat, web-hooks, etc. You can set various parameters like if the Load Time is high for X minutes alert me after every Y minutes. View detailed uptime, downtime reports and graphs of your response times. For servers, you can view detailed information of your CPU, RAM, disk, network usage, etc. We verify the downtime from multiple locations. Pinguzo has been tested on CentOS, Debian, Ubuntu, Fedora, Scientific Linux, RHEL, openSUSE, Slackware, Gentoo, Archlinux. -
14
MailEnable
MailEnable
MailEnable provides an end to end solution for providing secure email and collaboration services. A recent independent survey reports MailEnable as the most popular Windows Mail Server Platform in the world. Whether you are a hosting company providing email services to thousands of end users or a small business with a single domain, MailEnable provides a solution that will impress your mail users. MailEnable provides Windows Mail Server software with features comparable to Microsoft Exchange. It provides powerful messaging services like Exchange ActiveSync, IMAP, SMTP, POP3 and collaboration tools such as calendaring (CalDAV), contacts (CardDAV), tasks and notes.Starting Price: $349 -
15
SarvHost
SarvHost
SarvHost offers premium cloud virtual private server (VPS) hosting built on high-performance NVMe SSD storage with enterprise-grade DDoS protection and a 99.99% uptime guarantee, letting users deploy servers in strategic global locations including Germany, France, the Netherlands, and the USA. It gives full control with comprehensive root access so customers can choose operating systems, database versions, and software packages tailored to their needs. Servers are provisioned quickly, typically within about a minute, and support a range of OS options like Ubuntu, Debian, CentOS, AlmaLinux, Rocky Linux, Fedora, and Windows Server, with custom ISO uploads supported. It emphasizes speed, reliability, and security with redundant systems and built-in mitigation against volumetric and application-layer attacks, plus enterprise-grade hardware on all plans. Users can scale resources easily, manage backups, and rely on 24/7 expert support for deployment and maintenance.Starting Price: $5.99 per month -
16
Horde
Horde
Horde is the most flexible groupware on the planet, and that makes it the perfect platform on which to build your business productivity software. Horde connects to (and officially supports) more backends (all the leading SQL, LDAP, IMAP, Sieve, SMTP, cache platforms available today) than any other open source groupware system. This means you can continue to use your existing userbase and your users do not have to remember any additional passwords. Horde's feature set rivals the largest enterprise email systems. We have an incredible feature set that compares favorably against any competition in our primary apps (mail, calendar, address book), and even more in our secondary apps (time tracking, wiki, ticketing, and more).Starting Price: Free -
17
Zentyal
Zentyal
Join Windows® clients to the domain and manage them transparently. No disruption to your users, no user or device CALs. Comes with industry-standard SMTP and POP3/IMAP mail server built upon the most established technologies and protocols. Guarantees reliable and secure Internet access and helps to manage all the basic network infrastructure services. Receive software updates until the EOL-date of each version and get support when needed. Zentyal offers an easy to use Windows Server® alternative. It comes with native compatibility with Microsoft Active Directory® allowing you to join Windows® clients to the domain and manage them easily, causing no disruption to your users. Zentyal includes the industry-standard SMTP and POP3/IMAP mail servers built upon the most established technologies and protocols. Gives you the opportunity to deploy Zentyal as a mail server, domain & directory server with mail or all-in one server.Starting Price: €195 per server -
18
Mercury Mail Transport System
Pegasus
Mail from the outside world is received by Mercury and placed in the addressee's mailbox, where the user can access it at any later point. Messages sent by local users to the outside world are passed to Mercury, which then takes whatever steps are necessary to deliver them, removing the burden from the user's workstation and allowing him to continue with other work. If you connect using a dialup connection, then only the mail server needs to be able to access that connection. Your workstations do not need their own modems or Internet accounts. The mail server can continue processing mail even when the client workstations are turned off, allowing functions that depend on a continuously available service, such as automatic replies and auto-forwarding. -
19
OpenSMTPD
OpenSMTPD
OpenSMTPD is a free implementation of the server-side SMTP protocol as defined by RFC 5321, with some additional standard extensions. It allows ordinary machines to exchange emails with other systems speaking the SMTP protocol. Started out of dissatisfaction with other implementations, OpenSMTPD is a fairly complete SMTP implementation. OpenSMTPD is primarily developed by Gilles Chehade and Eric Faurot, with contributions from various OpenBSD hackers and members from other communities.Starting Price: Free -
20
Dovecot Pro
Open-Xchange
Dovecot Pro is a full-service email platform that delivers dynamic scalability, high performance, efficient utilization of hardware, and outstanding support to the world’s largest Telcos, ISP's, and Hosters. With a marketshare of 76% of installed email backends, customers trust the performance of Dovecot Pro. Efficient hardware utilization and advanced monitoring tools for statistics and administration reduce ownership costs and save time and maintenance costs. In addition, Dovecot Pro scales up and out to hundreds of servers and millions of users and multiple physical sites. Its stateless native architecture offers maximum flexibility as each major component can be deployed on its own dedicated node. Dovecot Pro provides industry-leading support for all email standards necessary to provide both Mail Delivery Agent functionality (via LMTP and Sieve), and to facilitate mail retrieval by mail clients (via IMAP and POP3). -
21
Haraka
Haraka
Haraka can serve thousands of concurrent connections and deliver thousands of messages per second. Haraka and plugins are written in asynchronous JS and are very fast. Haraka has very good spam protection (see plugins) and works well as a filtering MTA. It also works well as an MSA running on port 587 with auth and dkim_sign plugins enabled. Haraka makes no attempt to be a mail store (like an exchange or postfix/exim/qmail), an LDA, or an IMAP server (like Dovecot or courier). Haraka is typically used with such systems. Haraka has a scalable outbound mail delivery engine built in. Mail marked as relaying (such as via an auth plugin) is automatically queued for outbound delivery. Haraka's plugin architecture provides an easily extensible MTA that complements traditional MTAs that excel at managing mail stores but do not have sufficient filtering.Starting Price: Free -
22
Kopano
Kopano
We provide you with your digitally sovereign solution to keep track of your e-mails and calendars, to organize yourself with tasks or to stay in contact with team colleagues via video meeting. Kopano Groupware is an e-mail and calendaring solution, which can be operated digitally sovereign. Its functionality is comparable to that of Microsoft Outlook and Exchange. Kopano Groupware installations can be operated with more than 100,000 users. Kopano Groupware is an e-mail and calendar server that provides users with their daily communication and organizational data on all devices and connects teams. Data can be jointly edited in public folders or shared with others from your own inbox.Starting Price: $17 per year -
23
ClearOS
ClearCenter
Applications and an operating system come with your computer, tablet, and phone. So, why not on your server? HPE is redefining the small business server by offering ClearOS with HPE ProLiant servers. ClearOS is a simple, open, and affordable operating system with an intuitive graphical web-based user interface and an application marketplace with over 100 apps to choose from, with more being added every day. Leveraging open source software, you decide what applications you need and only pay for the applications and support you want. HPE and ClearCenter are making it easy for small, home, remote, and branch offices to have a server ready to use, out of the box, at no additional cost. HPE ProLiant integrated with ClearOS offers a simple, affordable, and secure experience. Building the IT solution that is just right for you has never been easier. -
24
feh
feh
feh is an X11 image viewer aimed mostly at console users. Unlike most other viewers, it does not have a fancy GUI, but simply displays images. It is controlled via command line arguments and configurable key/mouse actions. Slideshow: Show all files in or below a directory, change slides with your keyboard or automatically after a delay. feh is also shipped by many Linux/BSD distributions, including Arch Linux, Debian, FreeBSD, OpenBSD and Ubuntu. -
25
FreeBSD
FreeBSD
FreeBSD offers advanced networking, performance, security and compatibility features today which are still missing in other operating systems, even some of the best commercial ones. FreeBSD makes an ideal Internet or Intranet server. It provides robust network services under the heaviest loads and uses memory efficiently to maintain good response times for thousands of simultaneous user processes. FreeBSD brings advanced network operating system features to appliance and embedded platforms, from higher-end Intel-based appliances to ARM, PowerPC, and MIPS hardware platforms. From mail and web appliances to routers, time servers, and wireless access points, vendors around the world rely on FreeBSD’s integrated build and cross-build environments and advanced features as the foundation for their embedded products. And the Berkeley open source license lets them decide how many of their local changes they want to contribute back.Starting Price: Free -
26
Lavabit
Lavabit
Secure email for the world. Because everyone has the right to communicate privately. Flow is the most secure email solution for traditional email—compatible with most email clients. Volcano—our free, open source mail client—takes full advantage of the Dark Internet Mail Environment. Magma is our open source server for the Dark Internet Mail Environment—perfect if you need to host your own secure email. We're pioneers in encrypted email who believe all people have the right to private and secure communication. By establishing secure, end-to-end encryption standards and technologies, we're revolutionizing how the world communicates and protects its digital privacy. -
27
AlmaLinux
AlmaLinux
An open source, community-owned and governed, forever-free enterprise Linux distribution, focused on long-term stability, providing a robust production-grade platform. AlmaLinux OS is 1:1 binary compatible with RHEL® and pre-Stream CentOS. Our GitHub organization contains source code and tools used to build AlmaLinux OS and related infrastructure. Join our vibrant Reddit community, interact with other AlmaLinux OS users, receive updates, find and provide help. Join a real time discussion with other AlmaLinux OS community members, governance team and AlmaLinux OS developers. Ask questions, get answers and contribute community support to others in AlmaLinux OS community and developers alike. As a standalone, completely free OS, AlmaLinux OS enjoys $1M in annual sponsorship from CloudLinux Inc and support from other sponsors. Ongoing development efforts are governed by the members of the community. -
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Apache Bigtop
Apache Software Foundation
Bigtop is an Apache Foundation project for Infrastructure Engineers and Data Scientists looking for comprehensive packaging, testing, and configuration of the leading open source big data components. Bigtop supports a wide range of components/projects, including, but not limited to, Hadoop, HBase and Spark. Bigtop packages Hadoop RPMs and DEBs, so that you can manage and maintain your Hadoop cluster. Bigtop provides an integrated smoke testing framework, alongside a suite of over 50 test files. Bigtop provides vagrant recipes, raw images, and (work-in-progress) docker recipes for deploying Hadoop from zero. Bigtop support many Operating Systems, including Debian, Ubuntu, CentOS, Fedora, openSUSE and many others. Bigtop includes tools and a framework for testing at various levels (packaging, platform, runtime, etc.) for both initial deployments as well as upgrade scenarios for the entire data platform, not just the individual components. -
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MDaemon Email Server
MDaemon Technologies
The MDaemon Email Server was one of the first Microsoft Exchange alternatives offered to businesses around the world. It has been developed with the ongoing input from IT professionals seeking an easy-to-use, reliable, and secure mail server that does not require expensive administration or impose high per-user costs. It simplifies messaging and collaboration with a focus on security and privacy, an intuitive, user-friendly web mail design and by offering administrators Mobile Device Management, Business Instant Messaging, Document Sharing, and other enterprise-class features that can be managed with minimal support. MDaemon Email Server supports IMAP, SMTP, and POP3 protocols, and features include: integrated webmail with IM and document sharing, Outlook support, compromised password alerts, color-coded log files for quick and easy troubleshooting, customizable email policy setting to fit your unique network environment, Mobile Device Management, Account Hijack Detection, and more.Starting Price: $360 per year -
30
qmail
qmail
qmail is a secure, reliable, efficient, simple message transfer agent. Security isn't just a goal, but an absolute requirement. Mail delivery is critical for users; it cannot be turned off, so it must be completely secure. qmail's straight-paper-path philosophy guarantees that a message once accepted into the system, will never be lost. qmail also optionally supports maildir, a new, super-reliable user mailbox format. Maildirs, unlike mbox files and mh folders, won't be corrupted if the system crashes during delivery. Even better, not only can a user safely read his mail over NFS, but any number of NFS clients can deliver mail to him at the same time. qmail is vastly smaller than any other Internet MTA. Other MTAs have separate forwarding, aliasing, and mailing list mechanisms. qmail has one simple forwarding mechanism that lets users handle their own mailing lists. -
31
CommuniGate Pro
CommuniGate Software
Our end to end Unified Communications technology begins with the platform CommuniGate Pro. The system enables large scale Unified Communications with open API’s for integration into business applications. CommuniGate Pro scales dynamically to 100’s of millions of accounts. Ideally suitable for “Nation” scale alert systems, multimodal communications within web applications, or compartmentalized high-security network topologies. However, big scale does not mean trade-offs on efficiency or reliability. The platform is extremely agile for resilient applications in military or embedded environments. CommuniGate Pro is approved for governmental agency use in Europe and in the USA. Military, transportation and research center use is legendary for mind bending stability with uptimes like VMS. CommuniGate Pro enables banks to deploy mail to millions of clients for online self care while respecting compliance regulations. The signaling features of the server can be deployed in a hybrid system. -
32
NethServer
NethServer
Analyzes all web traffic and blocks selected websites via HTTP and even HTTPS using Squid proxy. Integrated with ClamAV antivirus and site blacklists. Multi-domain web server with ready LAMP stack. Virtual hosting allows to host multiple domain names on a single server. Based on NextCloud provides universal access to your files via the web, your computer or your mobile devices, wherever you are. Provide a private Slack-alternative with Mattermost. Open source messaging platform that enables secure team collaboration. Modern and powerful web interface based on Cockpit that simplifies common administration tasks, very easy and fast installation. Based on CentOS/RHEL, a widespread and popular server distribution, trusted by routine security updates, and rock solid stability.Starting Price: €48 per year -
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Synology Virtual Machine Manager
Synology
Virtual Machine Manager opens up abundant possibilities. You can set up and run various virtual machines, including Windows, Linux (Ubuntu, Red Hat, CentOS, Fedora, Debian, Oracle) or Virtual DSM all on one Synology NAS. You can also test a new software version in a sandbox environment, isolate your customers' machines or increase the flexibility of your server. Synology VMM lets you build a cost-effective and easily managed virtualization environment by combining computing, storage and networking resources on a single hardware platform. VMM provides an equally intuitive experience as DiskStation Manager, offering a reliable storage solution with robust features. You can run multiple virtual machines on your Synology NAS with operating systems including Windows, Linux and Virtual DSM. -
34
GNUPanel
GNUPanel
GNUPanel is a completely free replacement (GPL) for web hosting server automation software. The current version of GNUPanel is focused on Debian, however, a total revision of the code is contemplated, with many improvements and changes for the next few months. It is an application written mainly in PHP 5, born to run on Debian GNU/Linux servers in their 32 or 64-bit versions. It consists of a traditional web interface scheme with three levels of privileges, administrator, reseller and user with SSL access. The administrator can create public and private hosting plans, accept payments with Paypal, Digital Account or DineroMail, send messages to their users, use an integrated support ticket system, control transfer, disk space and establish account suspension policies. Users have all the usual functions, creation of mail and FTP accounts, databases, redirects, directory protection, etc. -
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K-9 Mail
K-9 Mail
K-9 Mail is designed for both novice and power users and offers lots of features for everyone. K-9 Mail has controllable debug logging. Users can activate logging to help diagnosing problems and errors. As an open source privacy-conscious project we don’t implement an always-on logging system that reports all the device’s activity to a central server. While this would make issues easier to fix it would also be costly to host the server and compromise the privacy of our users. Communication security is an increasingly important subject. K-9 Mail aims to provide intuitive e-mail security in many forms, both in terms of supporting secure login to your e-mail server and in the security of the e-mail itself. -
36
Pilvio
Astrec Data OÜ
Pilvio is a simple virtual cloud platform. You can easily have your websites, applications, and files hosted in the cloud. Intuitive platform to ease resource creation, management, and maintenance. We offer Virtual machines with a wide range of Operating Systems (Ubuntu, Centos, Windows, Debian, Fedora, OpenSuse, or Rocky.) Additionally, we offer 1-click installation for WordPress, Moodle, Docker, Nodejs, MikroTik, cPanel, CyberPanel, Mailcoach, or Plesk. (S3) Object Storage resource bucket creation and management. Our service is backed by a 99.9% uptime guarantee and comes with live human support.Starting Price: €6 per month -
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System On Grid
System On Grid
We are redefining internet by converging cloud infrastructure by merging Orbits (VPS – Virtual Private Servers) with Web Hosting which provides dedicated and scalable resources, security, isolation, and automation backed by very high reliability and 99.99% uptime guarantee. Our Orbits come with different specs and different flavors like CentOS, Ubuntu, Debian, Fedora, Free BSD, Net BSD etc. providing a lot of flexibility. The backend uses Intel E-5 processors, KVM hypervisor and Openstack. System On Grid Orbits are Virtual Instances (Virtual Private Servers/Machines) run by KVM hypervisor. The Orbits come with multiple Operating System Flavors including different Linux Distros like Centos, Ubuntu, Debian, Fedora etc. Orbits also have an option of Unix flavors viz Free BSD and Net BSD. Orbits take full advantage of Intel CPUs VTX features and hardware abstraction. We also have tweaked the Host kernel to provide strong and robust performance.Starting Price: $8 per month -
38
xCAT
xCAT
xCAT (Extreme Cloud Administration Toolkit) is an open source tool designed to automate the deployment, scaling, and management of bare metal servers and virtual machines. It offers comprehensive management capabilities for high-performance computing clusters, render farms, grids, web farms, online gaming infrastructures, clouds, and data centers. xCAT provides an extensible framework based on years of system administration best practices, enabling administrators to discover hardware servers, execute remote system management, provision operating systems on physical or virtual machines in both disk and diskless modes, install and configure user applications, and perform parallel system management. The toolkit supports various operating systems, including Red Hat, Ubuntu, SUSE, and CentOS, and is compatible with architectures such as ppc64le, x86_64, and ppc64. It integrates with management protocols like IPMI, HMC, FSP, and OpenBMC, facilitating remote console access.Starting Price: Free -
39
KumoMTA
Kumo Corp
KumoMTA is an Open-Source, enterprise-grade email message transfer agent (MTA) software for sending high-volume, business-critical emails. KumoMTA is typically chosen by high-volume email users looking to replace PowerMTA, Momentum, or traditional Open Source MTAs. KumoMTA offers high-performance message relay to the tune of millions of messages per hour per server, combined with extreme flexibility and configurability through its use of a Lua scripting engine for configuration and message management. For more information on KumoMTA see our Sourceforge project page.Starting Price: $0 -
40
Exim
Exim
Exim is a mail transfer agent (MTA) used in Unixllike operating systems. The first version was written in 1995 by Philip Hazel for use in the University of Cambridge Computing Service's e-mail systems. Exim is distributed under the GPL, and therefore is free to download, use and modify. Exim somewhat resembles Smail 3, but it has diverged and now surpasses it in user friendliness and flexibility. They both follow the Sendmail design model where a single main binary controls all the facilities of the MTA. This monolithic design is considered by some to be inherently less secure and slower, but despite this, Exim's security record is much better than Sendmail and comparable with Qmail and Postfix, as is its speed. In advanced areas such as queue handling, address routing and testing, it exhibits excellent performance. Exim doesn't have a Graphical User Interface (GUI) to help you configure it, but some Linux distributions add one. -
41
Cyrus IMAP
The Cyrus Team
Cyrus IMAP is an email, contacts and calendar server. Cyrus is free and open source. Features: Speed Security Efficiency Search CardDAV and CalDAV support Robust data storage Replication Scalable for large installations Flexible filtering support through Sieve Supports antivirus and antispam toolkits Handles deliverability: SPF, DKIM, DMARC Extensive authentication options, through Cyrus SASL JMAP support Long list of supported standardsStarting Price: Free -
42
Mailtraq
Mailtraq
Mailtraq Professional mail server software is the complete email server for business. It does everything you need at a great price and without hassles. Mailtraq is the ideal Microsoft Exchange Alternative: easy to deploy and simple to manage. Low license cost, no server-CALs, and stability in operation make Mailtraq email server software the choice for all SMB and SOHO businesses. Email is at the heart of your company or organization, and where those messages are stored is of vital importance to the long-term health of your firm. There is a degree of hassle and expense involved in running your own email server but it gives you complete physical control over who has access to your email. If you use your ISP's service then their system administrators can see and read your messages. Similarly, if you use a SAAS supplier for a hosted email service, and if you use a Cloud provider you not only don't know who is reading your email, but don't even know where in the world it is kept. -
43
Letterbox
Letterbox
Who reads your mails? With regular mails you, the receiver, all mail providers and maybe others can read them. With end-to-end encrypted mails only the sender and the receivers can read them. Our iOS-App Letterbox makes end-to-end encryption easy to use, is compatible with most mail providers and supports the standard encryption protocol OpenPGP. Letterbox is similar to common mail apps but indicates the security state of incoming and outgoing mails. We disinguish between a confidential and insecure mails. Letterbox is a free open-source mail client on iOS and part of an ongoing research project at the Freie Universität Berlin, Germany. Letterbox is still under development but you can soon use the app on your device with Apple's TestFlight app.Starting Price: Free -
44
Zmanda
Zmanda
Zmanda is a proven, reliable, high-performance enterprise backup and recovery solution. Zmanda provides a comprehensive solution at 50% less than the competition. You also get 24*7 support with a 2x higher NPS than the industry average. Since 2005, Zmanda has been trusted by enterprises, governments, and educational institutions worldwide. Zmanda enables you to back up to cloud, NAS, and disk. Zmanda supports advanced features, such as ransomware protection with air gap, client-side deduplication, forever incremental backups, and zero trust. It can be deployed as a container, VM, or Zmanda-hosted instance. Zmanda is open-source based with OpenAPI V3 standard APIs. It is packaged in all major Enterprise Linux distros, including Red Hat, Ubuntu, Debian, Rocky Linux, and Fedora.Starting Price: $499 -
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SERVER4YOU
SERVER4YOU
SERVER4YOU is a hosting platform that provides high-performance virtual and dedicated servers designed for reliability, scalability, and full control over infrastructure. It offers customizable server configurations with powerful hardware, including Intel Xeon CPUs, up to 256 GB RAM, and SSD, HDD, or NVMe storage, along with network speeds up to 1 Gbit/s and unlimited traffic. It supports multiple operating systems such as Ubuntu, Debian, AlmaLinux, Rocky Linux, and Windows Server, and includes compatibility with control panels like Plesk and cPanel to simplify server and application management. Using KVM virtualization for virtual servers, users can access dedicated resources and configure environments through an admin panel, selecting operating systems and settings after activation. SERVER4YOU emphasizes performance and reliability with a 550 Gbit/s backbone, redundant MPLS network architecture, and modern data centers in the United States and Europe.Starting Price: €2.75 per month -
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Alinto
Alinto
Alinto was born in 2000 as a result of Philippe Gilbert’s vision, whose risk paid off! Bringing together a team of passionate developers and experts in cloud messaging, he innovated the sector with the deployment of the first messaging platform, with a Cloud based email solution in Europe, and the first web based email accessible from a mobile phone. We then became a major player in the European digital arena. As a software mail server provider, our R&D, Marketing and Support teams are committed to adopt an approach focused on availability and proximity. In fact, this is much more than an electronic communication solution, as personalized care and solutions are adapted to your real requirements and needs. Besides, our experts are always available to help. Whether you’re a telecom operator, an internet service provider or an IT specialist, we are here for you. -
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Citadel
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.Starting Price: Free -
48
Proxmox Mail Gateway
Proxmox Server Solutions
Proxmox Mail Gateway is the leading open-source email security solution helping you to protect your mail server against all email threats from the moment they emerge. The flexible architecture combined with the userfriendly, web-based management interface, allows IT professionals and businesses to control all incoming and outgoing emails with ease, and to protect their users from spam, viruses, phishing and trojans. Organizations of any size can easily deploy and implement the anti-spam and anti-virus platform in just a few minutes. The full featured mail proxy is deployed between the firewall and the internal mail server, and allows to control all email traffic from a single platform. Proxmox helps you to easily maintain a secure and professional email communication, ensure business continuity, and gain high business reputation as well as customer satisfaction.Starting Price: €149 per year -
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Webuzo
Softaculous
Webuzo is a Multi User Control Panel which helps you manage your cloud or dedicated server. Its a hosting platform to help you grow your web applications as it helps customers to manage their domains, emails, websites, databases, etc. Webuzo is a Multi User Control Panel built for Hosting Providers, Resellers and Website Owners. Its a powerful and easy to use Web Hosting Control Panel used by users around the world. Webuzo can be installed on various types of servers and supports Ubuntu, AlmaLinux and CentOS. Webuzo allows hosting providers and users the ability to automate server management tasks while offering your customers the tools they need to manage their sites.Starting Price: $2.5 per month -
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ISPConfig
ISPConfig
Open Source, transparent, free, stable, secure und ultra-fast. Continuous development, huge documentation and big community with support forum with enterprise support. Manage one or more servers from one control panel. Single server, multiserver and mirrored clusters. No matter if physical server or virtual machine, ISPConfig just works. The ISPConfig support partner network offers a full range of support options for ISPConfig, email support, remote login and installation and consulting. Manage multiple servers from one control panel. Web server management for Apache2 and nginx. Mail server management with virtual mail users. DNS server management for BIND and PowerDNS. Virtualization (OpenVZ), administrator, reseller and client login. As the APS project is dead, we removed APS from our panel. HTTP/2 will be enabled for all websites if your software supports it. Implemented additional subdomain/alias vhost domains web folder checks.Starting Price: €5 one-time payment
