Page 44 | Best IT Management Software for Linux of 2026

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.

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KVM

Red Hat

KVM (for Kernel-based Virtual Machine) is a full virtualization solution for Linux on x86 hardware containing virtualization extensions (Intel VT or AMD-V). It consists of a loadable kernel module, kvm.ko, that provides the core virtualization infrastructure and a processor specific module, kvm-intel.ko or kvm-amd.ko. Using KVM, one can run multiple virtual machines running unmodified Linux or Windows images. Each virtual machine has private virtualized hardware: a network card, disk, graphics adapter, etc. KVM is open source software. The kernel component of KVM is included in mainline Linux, as of 2.6.20. The userspace component of KVM is included in mainline QEMU, as of 1.3.

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Xvisor

Xvisor® is an open-source type-1 hypervisor, which aims at providing a monolithic, light-weight, portable, and flexible virtualization solution. It provides a high performance and low memory foot print virtualization solution for ARMv5, ARMv6, ARMv7a, ARMv7a-ve, ARMv8a, x86_64, RISC-V and other CPU architectures. In comparison to other ARM hypervisors, it is one of the few hypervisors providing support for ARM CPUs which do not have ARM virtualization extensions. In RISC-V world, it is world first Type-1 RISC-V hypervisor. The Xvisor source code is highly portable and can be easily ported to most general-purpose 32-bit or 64-bit architectures as long as they have a paged memory management unit (PMMU) and a port of the GNU C compiler (GCC). Xvisor primarily supports Full virtualization hence, supports a wide range of unmodified Guest operating systems. Paravirtualization is optional for Xvisor and will be supported in an architecture independent manner (such as VirtIO PCI/MMIO devices).

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Lguest

Lguest allows you to run multiple copies of the same 32-bit kernel, simply modprobe lg, then run Documentation/lguest/lguest to create a new guest. I suggest you try this yourself, lguest is incredibly easy to get up and running. It's also quite useful: I can test-boot kernels with it in less than a second, or about 10x faster than basic qemu, and 100x faster than a real boot. And as it uses a pty as console, you can do things like pipe it through grep. lguest is all one big kernel patch, including the launcher. It's in 2.6.23-git13 and above. Lguest aims to isolate the guest so it cannot reach outside to the host (except for virtual devices supplied by the host of course), even if the guest is malicious. However, a malicious guest kernel can currently pin host memory (up to the amount of memory allowed to the guest). Most images are set up to create a console virtual consoles (/dev/tty0 etc), but the lguest console is /dev/hvc0.

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handVIRTUAL

Alhambra

We don’t just provision and spin up VMs. We take the time to understand your needs and hand-design a virtual data center that helps achieve your goals, cuts your costs, and grow your business. Grow your virtual data center as you grow. Increase resources and add more servers with ease. handVIRTUAL is based on four fundamental aspects that facilitate the provisioning of flexible services adapted to your needs. It is this flexibility and willingness to understand exactly what you need that sets us apart from other cloud service providers. Don’t be just another number. Try handVIRTUAL and experience what a true partnership feels like. handVIRTUAL is built on a solid foundation of knowledge, experience, and cutting edge technology. handVIRTUAL virtual data center services can integrate with other physical devices that you may need or wish to keep.

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LogMeIn Hamachi

LogMeIn

Create and manage virtual networks on-demand as you need them. Quickly and easily provision virtual network client software to new computers without having to go onsite. Run Hamachi in the background of networked computers so you always have access even when they’re unattended. Available with Standard, Premium and Multi-network subscriptions. Provide remote users with secure access to specific computers on your network from any location, without modifying firewalls or network routers. Quickly and easily create a simple, virtual, mesh network that allows remote machines to directly connect to each other, thereby giving users basic network access to all the network resources they need. Control network access and usage, including password management, network authentication, network locking, and ongoing network membership.

Starting Price: $49 per year

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SCIOPTA

The SCIOPTA architecture is specifically designed to provide excellent real-time performance and small size. Internal data structures, memory management, interprocess communication and time management are highly optimized. SCIOPTA is a pre-emptive real-time kernel. Interrupts can be serviced at any time, even inside the kernel. SCIOPTA is a message based real-time operating system. A powerful set of system calls is available to control the resources. Standardized processes and interprocess communication result in clear system designs and are easy to write, to read and to maintain. As processes are communicating with well defined messages and processes can be grouped into modules, SCIOPTA systems are very well suited for team work in big projects. The time-to-market will be reduced dramatically. SCIOPTA is designed on a message based architecture allowing direct message passing between processes. Messages are mainly used for interprocess communication and synchronization.

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QNX Neutrino RTOS

BlackBerry

Since 1980, thousands of companies have deployed QNX’s real-time operating systems to ensure the ideal combination of performance, security and reliability in mission-critical systems. At the core of QNX technology is the QNX Neutrino® Real-time Operating System (RTOS), a full-featured RTOS enabling next-generation products in every industry where reliability matters, including automotive, medical devices, robotics, transportation, and industrial embedded systems. With the QNX microkernel architecture, a component failure doesn’t bring down other components or the kernel. The failed component is simply shut down and restarted without adversely affecting the rest of the system. The QNX Neutrino RTOS offers the determinism only a real-time OS can provide. Techniques such as adaptive partitioning guarantee critical processes get the cycles they need to complete their tasks on time, while maintaining the performance your complex embedded systems require.

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Deos

DDC-I

Deos™, DDC-I’s safety-critical time and space partitioned real-time operating system (RTOS) that has been verified to the guidance of DO-178C/ED-12C Design Assurance Level A (DAL A) for Avionics Applications, supports ARINC 653 APEX, rate monotonic scheduling (RMS), and is targeted at the FACE Safety Base Profile. It has been field proven as a safety-critical RTOS since its first verification and audit to DAL A by Transport Canada in 1998, and it has been certified and is flying in 10’s of thousands of aircraft. Since the initial verification, it has continually evolved throughout the last two decades with new processors and features in subsequent baselines, and it has been successfully audited by the world’s various governmental certification authorities (FAA, ENAC, JAA, EASA, CAAC, and others) and airframe and Avionics Supplier Designated Engineering Representatives (DERs).

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INTEGRITY RTOS

Green Hills Software

INTEGRITY uses hardware memory protection to isolate and protect embedded applications. Secure partitions guarantee each task the resources it needs to run correctly and fully protect the operating system and user tasks from errant and malicious code, including denial-of-service attacks, worms, and Trojan horses. To help developers jumpstart product development, Green Hills Software offers an extensive array of middleware integrated and validated for INTEGRITY, including FFS, FAT, NFS, and journaling file systems, IPv4/IPv6 host and routing networking stacks, FIPS 140-2 certified Suite B enabled embedded encryption library, and more. Each of these middleware packages has been pre- integrated and tested to run seamlessly with and take full advantage of INTEGRITY’s advanced RTOS capabilities. For selected industries, Green Hills Software offers platforms that provide a completely integrated ecosystem. Each platform includes the INTEGRITY RTOS as well as development tools.

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MQX RTOS

NXP

The MQX real-time operating system (RTOS) provides real-time performance within a small, configurable footprint. The RTOS is tightly integrated with 32-bit MCUs and MPUs from NXP and is provided with commonly used device drivers. The MQX RTOS is designed to have a modern, component-based microkernel architecture allowing for customization by feature, size, and speed by selecting the components engineers wish to include while meeting the tight memory constraints of embedded systems. The MQX RTOS can be configured to take as little as 8 KB of ROM and 2.5K RAM on Arm Cortex M4, including kernel, 2 task applications,1 LW Semaphore, interrupt stack, queues, and memory manager. Provides a fully-functional RTOS core with additional, optional services. Components are linked in only if needed, preventing unused functions from bloating the memory footprint. Key components are included in both full and lightweight versions for further control of size, RAM/ROM utilization and performance options.

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Ubuntu Core

Canonical

An Ubuntu SSO account is required to create the first user on an Ubuntu Core installation. We will walk you through the steps of flashing Ubuntu Core on a Raspberry Pi 2, 3, 4 or CM3. At the end of this process, you will have a board ready for production or testing snaps. An Ubuntu SSO account is required to create the first user on an Ubuntu Core installation. Your board is now ready to have snaps installed, it’s time to use the snap command to install your first snap. The Snap Store is where you can find the best Linux apps packaged as snaps to install on your Ubuntu device and get started with your secure IoT journey.

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OpenWrt

OpenWrt is a highly extensible GNU/Linux distribution for embedded devices (typically wireless routers). Unlike many other distributions for routers, OpenWrt is built from the ground up to be a full-featured, easily modifiable operating system for embedded devices. In practice, this means that you can have all the features you need with none of the bloat, powered by a modern Linux kernel. Instead of trying to create a single, static firmware, OpenWrt provides a fully writable filesystem with optional package management. This frees you from the restrictions of the application selection and configuration provided by the vendor and allows you to use packages to customize an embedded device to suit any application. For developers, OpenWrt provides a framework to build an application without having to create a complete firmware image and distribution around it.

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Embedded Linux

Canonical

Developers are much more productive on Ubuntu than handcrafted embedded Linux. Sharing a platform shares the cost. Licensing is cheaper, updates more tested and maintenance shared. Familiar and widely used Ubuntu means easy CI/CD, better tools, faster updates and better kernels. Linux is not a differentiator. Use pre-enabled boards and focus on software unique to your story. Managing a familiar environment and platform is easier and cheaper than a specialist OS. Naturally. More Linux developers choose Ubuntu, so the talent pool is deeper and broader. Tap the biggest talent pool. Ubuntu is ahead of the pack by every measure. Productivity starts with reuse. Accelerate developers with the world’s largest package selection.

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TorizonCore

Toradex

Install TorizonCore in one click with the preinstalled Toradex Easy Installer. A Graphical User Interface (GUI) and Debian containers with APT Package Manager get you started in minutes. An extending selection of development tools such as the Flash Analytics tool helps to build reliable products fast. TorizonCore is open-source and built with the Yocto Project based on the Toradex Embedded Linux BSP, which enables further customization. Torizon offers full integration with Visual Studio 2019, providing a convenient way to use a Windows development PC and familiar tools while at the same time giving you the advantages of the rich Linux ecosystem. Toradex continues to support Windows Embedded Compact / WinCE, but for a developer who wishes to move to Linux, Visual Studio with Torizon is an excellent choice.

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Micrium OS

Silicon Labs

At the heart of any embedded OS is a kernel, which provides vital task scheduling and multi-tasking services to ensure that the timing requirements of your application code can be met, even as you regularly update and expand that code with new features. Micrium OS is more than a kernel, though, providing a number of additional modules to help you meet your project’s needs. Micrium OS is provided entirely free of charge for deployment on Silicon Labs EFM32 and EFR32 devices! You can begin adding Micrium’s professional-quality components to your projects today without payment of any licensing fees.

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FaceMe

CyberLink

Designed for smart surveillance, FaceMe® Security is a value-added solution that runs on PC, workstations, servers, and integrates into VMS (video management systems). It detects individuals within a crowd through their face and can identify them by matching the live capture with profiles kept in a database, even for people wearing a mask. It also displays their body temperature, detects anyone not wearing a mask properly over their nose and mouth and highlights block-listed people. It can send real-time alerts to security personnel or other people in the organization. FaceMe® Security Central compares the extracted facial templates with the database in order to confirm identity. It also provides a web-based console to manage the Microsoft SQL based face database, configure IP cameras, and inform relevant personnel about registered visitors, VIPs, block-listed people, or employees entering each monitored area.

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Panaseer

Panaseer’s continuous controls monitoring platform sits above the tools and controls within your organisation. It provides automated, trusted insight into the security and risk posture of the organisation. We create an inventory of all entities across your organisation (devices, apps, people, accounts, databases). The inventory highlights assets missing from different sources and where security controls are missing from assets. The platform equips you with metrics and measures to understand your security and compliance status at any level. The platform ingests data from any source in the cloud or on-premises, across security, IT and business domains through out-of-the-box data connectors. It uses entity resolution to clean, normalise, aggregate, de-duplicate and correlate this data, creating a continuous feed of unified asset and controls insights across devices, applications, people, databases and accounts.

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Bitmask

The Bitmask application and its custom branded versions like RiseupVPN are lovingly hand-crafted by a team of paid and volunteer programmers from different countries. Development is principally sponsored by the LEAP Encryption Access Project, an non-profit organization dedicated to defending democracy by protecting the right to whisper. The Bitmask application is designed to have a friendly interface with automatic configuration. You simply start the application, register with the compatible service provider of your choice, and away you go. With Bitmask VPN, all your traffic is securely routed through your provider before it is decrypted and sent on to the open internet. You want communication free of surveillance, based on open protocols, and that gives users control over their own data? Well, grab a keyboard and pitch in—the code is not going to write itself.

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Mailpile

Mailpile is an effort to reclaim private communication on the Internet. A project to rescue our personal lives from the proprietary cloud and prevent our conversations from being strip-mined for corporate profit and government surveillance. Mailpile is taking e-mail back. Powerful search & tagging makes your pile of mail managable, whether you have just a few messages, thousands or even millions. Mailpile is designed to be fast and responsive, outperforming "the cloud" even on slow computers. And it works even when the Internet is down. OpenPGP signatures and encryption are part of Mailpile's core design, not an afterthought. Mailpile makes it easy to sign and encrypt your mail. It's ironic that most web-mail solutions filter out spam, only to replace it with their own advertisements. Mailpile has no ads.

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SquirrelMail

SquirrelMail is a standards-based webmail package written in PHP. It includes built-in pure PHP support for the IMAP and SMTP protocols, and all pages render in pure HTML 4.0 (with no JavaScript required) for maximum compatibility across browsers. It has very few requirements and is very easy to configure and install. SquirrelMail has all the functionality you would want from an email client, including strong MIME support, address books, and folder manipulation. The need arose in our organization for the access of email and address books from anywhere in the world. Obviously a web interface is ideal for this, given that the user has access to the Internet. After reviewing several open source projects we realized that we were going to need to do some fairly major customizations to get things to be a nice fit for our needs.

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eApps

Enterprise-grade "virtual data center" platform for admin, deployment and operation of advanced web services. For multiple servers, complex deployments, geo-spanning, DR/HA configurations, and more. Latest spec Hypervisors and fast, expandable SSD block storage. Fast, solid platform for websites, web apps, and web services. Supports large, custom-sized virtual servers, adjustable at any time. Handles heavy workloads using the latest spec Hypervisors and fast, expandable SSD block storage. Next-generation platform for development, rapid deployment, and operation of critical apps. Superior Vertical/Horizontal autoscaling. Strong Java, PHP, Ruby, Python, Node.js, Golan, Docker, and Kubernetes support. Our platforms have included, and optional, services that are designed to ensure security, performance, uptime, and worry-free operation. We offer custom solutions for your requirements. Let us solve your backup, VPN, high uptime, and data protection needs.

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Hivelocity

Offering 24x7x365 phone support. Hivelocity offers predictable costs and superior full hardware performance with no noisy neighbors. API automation enables code controlled infrastructure scaling. Custom built servers, GPU servers and colocation also available. Dedicated servers are inherently more secure than a multi-tenant cloud or virtual environment. HIPAA and PCI compliance are easy to achieve on dedicated servers. Manage expansive infrastructure with ease using robust tooling such as managed services, instant deployment across the globe, DNS management, instant reloads, bandwidth monitoring, and more all from a lightning fast, mobile friendly control panel. Over come challenges faster with our tailored technical support experience. Unlike the big clouds and public hosting providers, you have direct access to our team of highly talented techs, network engineers, developers, and executives ready to help overcome any challenges standing in the way of your strategic objective

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Infomaniak

Infomaniak Network

Infomaniak is a major cloud player in Europe and the leading developer of web technologies in Switzerland. From the design of data centers and products to the orchestration of cloud infrastructures, Infomaniak is a Swiss cloud player that controls its value chain from end to end and is exclusively owned by its employees. This independence enables it to guarantee the security, confidentiality and sovereignty of the data of more than one million users in more than 208 countries. At the heart of Europe in Geneva and Winterthur, Infomaniak develops all the solutions that companies need to ensure their online visibility and sustainable development.

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balenaEngine

balena

An engine purpose-built for embedded and IoT use cases, based on Moby Project technology from Docker. 3.5x smaller than Docker CE, packaged as a single binary. Available for a wide variety of chipset architectures, supporting everything from tiny IoT devices to large industrial gateways. Bandwidth-efficient updates with binary diffs, 10-70x smaller than pulling layers in common scenarios. Extract layers as they arrive to prevent excessive writing to disk, protecting your storage from eventual corruption. Atomic and durable image pulls defend against partial container pulls in the event of power failure. Prevents page cache thrashing during image pull, so your application runs undisturbed in low-memory situations. balenaEngine is a new container engine purpose-built for embedded and IoT use cases and compatible with Docker containers. Based on Moby Project technology from Docker, balenaEngine supports container deltas for 10-70x more efficient bandwidth usage.

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Enea OSE

Enea

Enea OSE is a robust, high-performance, a real-time operating system optimized for multi-processor systems requiring true deterministic real-time behavior and high availability. It shortens development time, enhances reliability and reduces lifetime maintenance costs for a wide range of systems, from wireless devices and automobiles to medical instruments and telecom infrastructure. Enea OSE is optimized for communication and control systems requiring high performance and hard real-time characteristics. It is deployed extensively in the areas of telecom networking systems, wireless devices, industrial automation, medical equipment, automotive and transportation equipment, as well as other embedded systems. The twice award-winning design of the Enea OSE multicore kernel provides the ease-of-use of Symmetric Multi-Processing (SMP) together with the scalability and determinism of Asymmetric Multi-Processing (AMP) and the performance of bare metal.

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froxlor

Developed by experienced server administrators, this open-source (GPL) panel simplifies the effort of managing your hosting platform. Choose per domain which IPv4 and/or IPv6 addresses and which ports should be used. Determine which ports should use SSL and allow customers to store certificates per domain. Save different PHP-configurations and choose per domain which php.ini should be used (FCGI/FPM only). Manage reseller resources and limit what the customers may use in the dedicated customer panel. Store dedicated HTTP, FTP and Mail traffic and view it in interactive graphs. Access all major functions via API to gain full control over your hosting. Style froxlor by overwriting the basis CSS or create your complete own theme. Use free certificates from Let's Encrypt directly from within froxlor.

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Cockpit

Cockpit is a web-based graphical interface for servers, intended for everyone, especially those who are new to Linux, familiar and expert admins. Thanks to Cockpit intentionally using system APIs and commands, a whole team of admins can manage a system in the way they prefer, including the command line and utilities right alongside Cockpit. See your server in a web browser and perform system tasks with a mouse. It’s easy to start containers, administer storage, configure networks, and inspect logs. Basically, you can think of Cockpit like a graphical “desktop interface”, but for individual servers. Have a favorite app or command-line tool that you use on your servers? Keep using the command line, Ansible, and your other favorite tools and add Cockpit to the mix with no issues. Cockpit uses the same system tooling you would use from the command line. You can switch back and forth between Cockpit and whatever else you like.

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Ajenti

An admin's tool for a more civilized age, providing you with a fast and secure way to manage a remote Linux box at any time using everyday tools like a web terminal, text editor, file manager and others. Ajenti Core is a streamlined and reusable framework for building web interfaces of all kinds. Includes lots of plugins for system and software configuration, monitoring and management. Ajenti won't damage your existing configuration or tell you how to do your job. Preserves config structure and comments. Easily extensible using Python. Plugin development is fast and pleasant with rich APIs. Automatic configuration of Exim 4 and Courier IMAP, including virtual e-mails, DKIM, DMARC and SPF.

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Squish

Qt Group

Squish GUI Tester automates testing of graphical user interfaces across platforms and technologies such as Qt, Java, Web, .NET/WPF, iOS, Android, and embedded systems. Test scripts can be written in Python, JavaScript, Perl, Tcl, or Ruby, and its object-based recognition ensures tests remain reliable even as UIs change. With features like record/replay, keyword-driven and data-driven testing, test suite management, and CI/CD integration, Squish helps teams reduce manual testing, accelerate testing cycles, and ensure consistent performance, usability, and reliability. It is ideal for teams building enterprise-scale or safety-critical applications requiring high-quality, maintainable GUI testing workflows.

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Best IT Management Software for Linux - Page 44

Compare the Top IT Management Software for Linux as of July 2026 - Page 44

Exim