Alternatives to NethServer
Compare NethServer alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to NethServer in 2026. Compare features, ratings, user reviews, pricing, and more from NethServer competitors and alternatives in order to make an informed decision for your business.
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1
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 -
2
ClamAV
ClamAV
ClamAV® is the open-source standard for mail gateway-scanning software. ClamAV includes a multi-threaded scanner daemon, command-line utilities for on-demand file scanning, and automatic signature updates. ClamAV supports multiple file formats and signature languages, as well as file and archive unpacking. Access to ClamAV versions that work with your operating system. ClamAV® is an open-source antivirus engine for detecting trojans, viruses, malware & other malicious threats. ClamAV® is an open-source (GPL) anti-virus engine used in a variety of situations, including email and web scanning, and endpoint security. It provides many utilities for users, including a flexible and scalable multi-threaded daemon, a command-line scanner, and an advanced tool for automatic database updates. Built-in support for various archive formats, including ZIP, RAR, Dmg, Tar, GZIP, BZIP2, OLE2, Cabinet, CHM, BinHex, SIS, and others. -
3
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. -
4
CentOS
CentOS
CentOS Linux is a community-supported distribution derived from sources freely provided to the public on Red Hat or CentOS git for Red Hat Enterprise Linux (RHEL). As such, CentOS Linux aims to be functionally compatible with RHEL. The CentOS Project mainly changes packages to remove upstream vendor branding and artwork. CentOS Linux is no-cost and free to redistribute. Each CentOS version is maintained until the equivalent RHEL version goes out of general support. A new CentOS version is made available once a new RHEL version is rebuilt - approximately every 6-12 months for minor point releases and several years for major version bumps. The length of time the rebuild takes varies from weeks for point releases to months for major version bumps. This results in a secure, low-maintenance, reliable, predictable and reproducible Linux environment. -
5
WinGate
WinGate
WinGate Proxy Server is a highly capable HTTP Proxy server, SOCKS server, integrated Internet gateway and communications server designed to meet the access control, security and communications needs of today's businesses. In addition to a comprehensive range of features, WinGate Proxy Server's license options provide you the flexibility to match your needs to your budget, whether you need to manage an enterprise, small business, or home network. WinGate Proxy Server will share most types of Internet connection, allowing multiple users to simultaneously surf the web, retrieve their email, or use other internet programs, as if they were directly connected to the Internet. Whether it is a simple dialup modem or high speed fibre, WinGate Proxy Server can help to make the most out of the connection. WinGate Proxy Server supports a wide variety of Internet protocols, allowing applications such as Web browsers, messaging software, FTP and SSL.Starting Price: $109.95 one-time payment -
6
Squid
Squid
Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. It reduces bandwidth and improves response times by caching and reusing frequently-requested web pages. Squid has extensive access controls and makes a great server accelerator. It runs on most available operating systems, including Windows, and is licensed under the GNU GPL. Squid is used by hundreds of Internet Providers worldwide to provide their users with the best possible web access. Squid optimizes the data flow between client and server to improve performance and caches frequently-used content to save bandwidth. Squid can also route content requests to servers in a wide variety of ways to build cache server hierarchies that optimize network throughput. Thousands of websites around the Internet use Squid to drastically increase their content delivery. Squid can reduce your server load and improve delivery speeds to clients. -
7
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 -
8
CacheGuard
CacheGuard Technologies
CacheGuard-OS transforms a virtual or bare metal machine into a powerful and easy to handle network appliance. It's a Linux based Operating System built from scratch and especially designed to Secure and Optimize the network traffic. Great care has been taken by CacheGuard-OS developers to select the best of the best Open Source technologies to integrate into CacheGuard-OS. The result is a robust and trustworthy solution that can be up and running within minutes. CacheGuard-OS integrates Open Source software such as but not limited to OpenSSL, NetFilter, IProute2, StrongSwan, ClamAV, Apache, ModSecurity, Squid and Open Source developments made by CacheGuard-OS developers.Starting Price: $0 -
9
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 -
10
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 -
11
Squid Proxies
Squid Proxies
SquidProxies provides enterprise-grade private proxies built for speed, stability, and broad compatibility. Our network helps protect privacy by masking your origin IP and reducing common proxy signals—ideal for automation, data access, and secure browsing. Choose the right proxy type for your workflow: Residential Proxies (Rotating) deliver real residential IPs with automatic rotation for freshness and high IP diversity, while Datacenter Proxies (Static) provide dedicated, stable IPs optimized for consistent sessions, whitelisting, and long-running tools. With multi-subnet coverage and location diversity, SquidProxies offers non-sequential IP allocations to help minimize repeatable patterns and digital footprints. Works with any tool or device supporting HTTP/HTTPS proxies. Established in 2010, we also offer custom solutions for high-volume and performance-critical needs.Starting Price: $1.5 per month -
12
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 -
13
GridPane
GridPane
GridPane helps Serious WordPress Agencies crush their hosting problems, once and for all. Create and manage your own enterprise-capable servers and build your own WordPress hosting business with GridPane. The GridPane server stack is incredibly performant and ready for whatever you can throw at it. Your visitors won’t waste a single second waiting for pages to load. Our close-knit support team are legitimate engineers who have a deep understanding of both WordPress and our exceptional hosting stack. GridPane takes care of a ton of security right out of the box, and we have integrations with multiple WAFS, Fail2Ban, Maldet + ClamAV malware scanning, and multiple Nginx site hardening options.Starting Price: $125 per month -
14
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. -
15
Cherokee
Cherokee
Cherokee is an innovative, feature-rich, lightning-fast and easy to configure open source web server designed for the next generation of highly concurrent secured web applications. All the configuration is done through Cherokee-Admin, a beautiful and powerful web interface. Cherokee supports the most widespread web technologies, FastCGI, SCGI, PHP, uWSGI, SSI, CGI, LDAP, TLS/SSL, HTTP proxying, video streaming, content caching, traffic shaping, etc. Cherokee runs on Linux, Mac OS X, Solaris, and BSD. It is highly efficient, extremely lightweight and provides rock-solid stability. Among its many features, there is one that deserves special credit, a user-friendly interface called cherokee-admin that is provided for a no-hassle configuration of every single feature of the server. This administration interface allows you to configure the webserver without having to worry about editing a text file written with a certain syntax. -
16
CloudLinux
CloudLinux
Stable servers reduce churn and allow you to increase density, and therefore magnify your profit. The CloudLinux OS stability features prevent resource spikes and make your servers rock-solid stable, even in the most stressful situations. CloudLinux OS protects your servers from attacks by virtualizing users’ file systems and prevent sensitive information disclosure. Our kernel-level technology prevents all known symbolic link attacks, which further enhances the security level of the servers. Secure the unsupported versions of PHP where, vulnerabilities, even if discovered, are not patched by the PHP.net community. Multiply the number of users on a more stable server with Cloudlinux OS and manage any resources limits for each customer. Troubleshooting performance problems with Detailed information on system bottlenecks, slow database queries, functions, or external calls.Starting Price: $7 per server per month -
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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. -
18
iRedMail
iRedMail
The right way to build your mail server with open source softwares. Works on CentOS Stream, Rocky, Alma, Debian, Ubuntu, FreeBSD, OpenBSD. With iRedMail, you can deploy an OPEN SOURCE, FULLY FLEDGED, FULL-FEATURED mail server in several minutes, for free. We did the heavy lifting of putting all the open source components together and applying best practices. Our product does all the major tasks for you. Furthermore we offer professional support to back you up in case you have some problems. You have all personal data on your own hard disk, you can control the email security, inspect transaction log. No other organization can see the content of all messages. All components used in iRedMail are open source softwares, and you get the bug fixes and updates from the Linux/BSD venders you trust. iRedMail is the right way to build your mail server with open source softwares.Starting Price: Free -
19
Raptor Email Security
Peregrine Computer Consultants Corporation
Raptor Email Security is an MX-based email security solution designed by industry experts to stop spam, phishing, and malware attacks using a unique scoring framework and multiple technologies including SpamAssassin, ClamAV, MIMEDefang, and Sendmail. Let our experts handle the annoying spam for you! No Spam. Zero Tickets. 2X Resources. With your email going through our servers, we handle the brunt of most cyber attacks which keeps your server better protected! With less resource usage, you'll be able to increase your hosting revenue and monetize your server by adding more hosting accounts. Raptor Email Security also comes with Raptor Review which provides a detailed, expert analysis of your email configuration. It's a phishing hotline and white glove service to definitively fix your email problems including blocking spam, improving email deliverability, identifying scams, finding missing email, and unblocking good email. Set up in minutes. Free 30 Day Trial Available!Starting Price: $15/server/month -
20
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 -
21
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 -
22
Oracle Communications Messaging Server is a standards-based Internet messaging server designed for high-capacity, reliable message handling for service providers and their customers. Messaging Server provides support for several email protocols and can manage embedded text, sound, graphics, video files, and other files and formats.
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23
Eudora Internet Mail Server
Eudora Internet Mail Server
Completely rewritten relay restrictions with an easier to use interface that gives finer control over relay security. New domain name resolver (DNR), EIMS now has it's own DNR, which works around bugs in the Open Transport DNR and performance problems with the OS X DNR. The new DNR does not currently support non-recursive DNSs. SMTP Submit port, this is a second SMTP port running on TCP port 587 by default. It currently works exactly the same as the standard SMTP port. This is handy for clients that are stuck behind an ISP that blocks port 25 access. Sending Setup option for maximum recipients per message. Expand SMTP Addresses option, you can now turn this off, with EIMS 3.1 and earlier it was always on. The SMTP server (both port 25 and 587) now reports Telnet connections and connections that look like port scans (connections where no data is sent and it doesn't time out).Starting Price: Free -
24
Scalix
Scalix
Offer a high value Outlook experience with push email, PIM, group calendaring, free/busy services, public folders, delegation, and more. Increase margins with lower server counts and compelling subscription pricing. Reduce your licensing costs and leverage your teams' existing skills with a Linux-based platform. Scalix starter packs are robust, single-server messaging solutions designed to provide smaller businesses and organizations with a full featured email and collaboration solution. Scalix small business edition is our single-server solution designed for small businesses. It includes a rich package of business functionality including a means to instantly recover deleted items on a user-specific basis, wireless device support and more. -
25
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 -
26
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 -
27
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. -
28
SOGo
SOGo
SOGo is a fully supported and trusted groupware server with a focus on scalability and open standards. SOGo is released under the GNU GPL/LGPL v2 and above. SOGo provides a rich AJAX-based Web interface and supports multiple native clients through the use of standard protocols such as CalDAV, CardDAV and GroupDAV, as well as Microsoft ActiveSync. SOGo is the missing component of your infrastructure; it sits in the middle of your servers to offer your users a uniform and complete interface to access their information. It has been deployed in production environments where thousands of users are involved. -
29
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 -
30
Weblock
Weblock
Choose from our predefined list which ad servers and content providers you want to block on your iOS device. Import rules from EasyList or hosts file on your Android device. Create your own blacklist and whitelist to block any URL, domain or IP on both platforms. To fully use Weblock, take a look into the Filters section. Add your own rules and define Blacklists, Whitelists and Redirects. All locations and resources matching Blacklist rules will be inaccessible from your device. All resources matching Whitelist rules will always be accessible (regardless of the Blacklist rules). You can also define Redirects and access domains and URLs using the proxy servers you choose. Block advertising – banners, pop-ups and video ads in most browsers and apps.Starting Price: $1.99 one-time payment -
31
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 -
32
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 -
33
Diladele Web Filter
Diladele
User tries to access a web site in the Internet. Browser connects to that site either directly or using explicitly configured proxy settings. Requests and remote site responses get into Squid, are authenticated and redirected to Web Safety ICAP filter running either locally or remotely. Requests and responses are analyzed and access is allowed or denied based on configured policy settings. Information about request and response is stored in the database. Web Safety is an ICAP web filter that directly plugs into Squid proxy. This allows it to filter URLs and do deep content inspection of encrypted HTTPS traffic. Encrypted explicit content is blocked easily. Performs deep content inspection of web pages and blocks everything containing adult explicit language and links to questionable content. General purpose web sites (Google Search, Google Images, Bing or YouTube) are filtered as well and all inappropriate content is blocked. -
34
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 -
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Dovecot
Dovecot
Dovecot is an excellent choice for both small and large installations. Dovecot is among the best performing IMAP servers while still supporting the standard mbox and Maildir formats. The mailboxes are transparently indexed, which gives Dovecot its good performance while still providing full compatibility with existing mailbox handling tools. Dovecot is standards compliant. Dovecot passes all IMAP server standard compliancy tests while most other servers fail many of them. Dovecot’s indexes are self-optimizing. They contain exactly what the user’s client commonly needs, no more and no less. Dovecot is self-healing. It tries to fix most of the problems it notices by itself, such as broken index files. The problems are however logged so the administrator can later try to figure out what caused them. Dovecot tries to be admin-friendly. Common error messages are made as easily understandable as possible.Starting Price: Free -
36
Shadowrocket
Shadow Launch Technology Limited
Shadowrocket is a rule-based proxy utility that captures all HTTP, HTTPS, DNS, and TCP traffic from any app and redirects it to a proxy server, then records and displays each request for detailed inspection. Users define rules by domain match, suffix, keyword, CIDR IP range, or GeoIP lookup, import configurations via URL or iCloud Drive, and measure usage and speed across Wi-Fi, cellular, direct, and proxy connections. It also blocks ads by domain or user-agent rules, supports local DNS mapping, decrypts HTTPS traffic, rewrites URLs, and fully supports IPv6. Advanced script filters, multi-level forward proxying, and compatibility with kcptun, cloak, gost, and v2ray plugins extend its flexibility, while DNS-over-HTTPS, DNS-over-TLS, and DNS-over-QUIC ensure secure name resolution. Shadowrocket runs seamlessly on cellular networks and integrates SSH tunneling with UDP gateway support, making it a powerful tool for monitoring, filtering, and optimizing network traffic.Starting Price: Free -
37
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. -
38
hosting.de
hosting.de
hosting.de is a secure, fast and GDPR-compliant web hosting platform that enables businesses and individuals to deploy websites and applications with high-performance SSD storage and optimized server infrastructure. The platform offers flexible hosting options ranging from shared web hosting to scalable VPS and cloud server solutions. Users can launch popular CMS platforms like WordPress, Joomla, and Drupal through one-click installations. Daily automated backups protect critical data while professional support assists with technical challenges. The service includes comprehensive domain registration and managed Nextcloud for secure file storage and collaboration.Starting Price: $3.30/month -
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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. -
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Hosting UK
Hosting UK
We make domain names easy, just search, buy and use. Secure your domain name today and get free web and email forwarding with full DNS management from a great control panel. Linux or Windows, beginner or expert, we have a plan for you. Fast, affordable, solid web hosting with ASP.NET, ASP Classic, and PHP on Windows Server 2019 with SQL Server 2016 or Linux hosting with PHP, MySQL and Ruby on Linux. Screamingly fast SSD-based VPS servers. Choose between Windows or a choice of Linux operating systems and control panels including Plesk and cPanel on our reliable and self-healing cloud. Full administrator or root access for when you need full control and a solution fast. Fast and reliable Dell dedicated servers connected to the fastest network. With a range of managed or un-managed servers giving you a rock-solid platform all backed up with great UK-based support for total peace of mind.Starting Price: $3.91 per month -
41
CheapSSLsecurity
CheapSSLsecurity
CheapSSLSecurity offers SSL certificates and other security products at low prices. These certificates can protect a single domain, sub-domains, or multiple domains, even if they are on different web servers. For example, CheapSSLSecurity's Multi-Domain SSL certificates can secure up to 250 websites, while their Multi-Domain Wildcard SSL certificates can secure up to 250 domains and their subdomains.Starting Price: $3.98/year -
42
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 -
43
Pico Audit
Kendrick Sales
Comprehensive NIST 800-53 and JSIG RMF auditing built for standalone Windows and Linux systems. Turn cryptic logs into clear human stories with our advanced Storyline engine. - Cross-Platform: Unified installers for both RHEL/CentOS and Windows Server. - Human Context: Storyline converts technical events into plain-English timelines. - Easy Licensing: Activate offline using our secure operator portal. - US-Based Code: Developed entirely in the USA with a strict supply chain policy. We are TAA Compliant.Starting Price: $79.99/year/PC -
44
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 -
45
MAAS
Canonical
Self-service, remote installation of Windows, CentOS, ESXi and Ubuntu on real servers turns your data centre into a bare metal cloud. Metal-As-A-Service (MAAS) provisioning with Windows, ESXi, Linux. Bare metal cloud with on-demand servers. Remote edge cluster operations. Infrastructure monitoring and discovery. Ansible, Chef, Puppet, SALT, Juju integration. Super fast install from scratch. VMWare ESXi, Windows, CentOS, RHEL, Ubuntu. Custom images with pre-installed apps. Disk and network configuration. API-driven DHCP, DNS, PXE, IPAM. REST API for provisioning. LDAP user authentication. Role-based access control (RBAC). Hardware testing and commissioning. MAAS delivers the fastest OS installation times in the industry thanks to its optimised image-based installer. Works on all certified servers from any major vendor. Discovers servers in racks, chassis and data centre networks. Supports major system BMCs and chassis controllers.Starting Price: $30 -
46
METANET
METANET
In the business for 21 years, we have been concentrating on Swiss Internet services in the areas of web hosting, web servers and domains. We host more than 1,000 server systems and look after 50,000 customers. SMEs as well as private individuals get enough space for their internet presence and their e-mail traffic, we take care of the complete server administration. You always have the option of using various popular CMS/applications such as WordPress, Joomla, Typo3, Drupal etc. The server's data is backed up in a separate data center, i.e. disaster-proof, so to speak. Allow your data to do so, at no extra charge! Treat yourself to real multi-domain hosting, which allows you to manage an unlimited number of domains on the same platform. The virtual cloud server systems allow easier and cost-effective entry into an isolated server environment, without having to forego scalability.Starting Price: $23 per month -
47
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 -
48
Salix
Salix
Salix is a GNU/Linux distribution based on Slackware that is simple, fast and easy to use, with stability being a primary goal. Salix is also fully backwards compatible with Slackware, so Slackware users can benefit from Salix repositories, which they can use as an "extra" quality source of software for their favorite distribution. Like a bonsai, Salix is small, light & the product of infinite care. Everything that is included in the iso is installed. That includes a complete desktop environment and a complete selection of applications that matches the respective environment, always following the "one application per task" rationale. Only the minimum essentials for a console system to start are included. A graphical environment is not provided. This is ideal if you are an experienced user and want to customize your installation for any specific purpose, such as a web server, file server etc.Starting Price: Free -
49
personalDNSfilter
Zenz Solutions
personalDNSfilter is a DNS filter proxy written in Java that intercepts domain name resolutions and returns the loopback address for filtered hosts. It supports secure DNS via DNS over HTTPS (DoH) and DNS over TLS (DoT) and is available for Java-enabled devices. The application operates with minimal memory usage, allowing filtering with millions of hosts while consuming only a few megabytes of RAM. On Android devices (version 4.2 and newer), personalDNSfilter functions as an effective ad, malware, and tracking server filter without requiring root access. It works with any upstream DNS server, ensuring that filtering is entirely local without any external communication. The software comes preconfigured with ad host filter lists, and users can add additional host filter lists as desired. personalDNSfilter can be run locally on a device or centrally as a DNS server within a network.Starting Price: Free -
50
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
