The following distributions match your criteria (sorted by popularity):
1. Linux Mint (4)
Linux Mint is an Ubuntu-based distribution whose goal is to provide a classic desktop experience with many convenient, custom tools and optional out-of-the-box multimedia support. It also adds a custom desktop and menus, several unique configuration tools, and a web-based package installation interface. Linux Mint is compatible with Ubuntu software repositories.
2. Pop!_OS (5)
Pop!_OS is an Ubuntu-based Linux distribution featuring a custom GNOME desktop. Pop!_OS is designed to have a minimal amount of clutter on the desktop without distractions in order to allow the user to focus on work. The distribution is developed by Linux computer retailer System76.
3. elementary OS (9)
elementary OS is an Ubuntu-based desktop distribution. Some of its more interesting features include a custom desktop environment called Pantheon and many custom apps including Photos, Music, Videos, Calendar, Terminal, Files, and more. It also comes with some familiar apps like the Epiphany web browser and a fork of Geary mail.
4. Zorin OS (11)
Zorin OS is an Ubuntu-based Linux distribution designed especially for newcomers to Linux. It has a Windows-like graphical user interface and many programs similar to those found in Windows. Zorin OS also comes with an application that lets users run many Windows programs. The distribution’s ultimate goal is to provide a Linux alternative to Windows and let Windows users enjoy all the features of Linux without complications.
5. KDE neon (13)
KDE neon is a Ubuntu-based Linux distribution and live DVD featuring the latest KDE Plasma desktop and other KDE community software. Besides the installable DVD image, the project provides a rapidly-evolving software repository with all the latest KDE software. Two editions of the product are available — a «User» edition, designed for those interested in checking out the latest KDE software as it gets released, and a «Developer’s» edition, created as a platform for testing cutting-edge KDE applications.
6. Linux Lite (18)
Linux Lite is a beginner-friendly Linux distribution based on Ubuntu’s long-term support (LTS) release and featuring the Xfce desktop. Linux Lite primarily targets Windows users. It aims to provide a complete set of applications to assist users with their everyday computing needs, including a full office suite, media players and other essential daily software.
7. Lubuntu (32)
Lubuntu is a variant of Ubuntu that uses the LXQt desktop environment. (Versions prior to 18.10 shipped with the LXDE desktop.) It includes essential applications and services for daily use, including office suite, PDF reader, image editor and multimedia players. A distribution available for both 32-bit and 64-bit computers, Lubuntu is intended to be user-friendly, lightweight and energy efficient.
8. Kubuntu (34)
Kubuntu is a free, user-friendly Linux distribution based on KDE’s desktop software and on the Ubuntu operating system. It has a biannual release cycle. Besides providing an up-to-date version of the KDE desktop at the time of the release, the project also releases updated KDE packages throughout the lifetime of each release.
9. Peppermint OS (42)
Peppermint OS is a Lubuntu-based Linux distribution that aims to be lightning fast and easy on system resources. By employing its Site Specific Browser, Peppermint integrates seamlessly with cloud and web-based applications. The distribution’s other features include automatic updates, easy step-by-step installation, sleek and user-friendly interface, and increased mobility by integrating directly with cloud-based applications. The distribution employs a hybrid LXDE/Xfce desktop environment, mixing LXDE’s lxsession with Xfce’s panel and application menu.
10. Xubuntu (43)
Xubuntu is a community-developed operating system based on Ubuntu. It comes with Xfce, which is a stable, light and configurable desktop environment.
11. Bodhi Linux (47)
Bodhi Linux is an elegant and lightweight Debian/Ubuntu-based distribution featuring Moksha, an Enlightenment-17-based desktop environment. The project takes a decidedly minimalist approach by offering modularity, high levels of customisation, and choice of themes. Bodhi releases come in several editions, including Standard (64-bit) and Legacy (32-bit) which are minimalist, only including a web browser, terminal, file manger, text editor and photo GUI applications, while the AppPack edition includes more applications and tools preinstalled. Additional software can be added with Bodhi’s web-based AppCenter, Synaptic, and APT.
12. Nitrux (48)
Nitrux is a Linux distribution based on Debian’s Unstable (sid) branch with additional packages pulled in from Ubuntu LTS repositories. Nitrux strives to be a distribution suitable for laptops and desktop computers. Its main desktop environment is NX Desktop, a KDE Plasma desktop enhanced with «plasmoids» to create a special blend of aesthetics and functionality. The project also focuses on using redistributable, portable applications using the AppImage format. Registration with an e-mail address was required to download this distribution, however public downloads have been available since mid-2020.
13. Linux Kodachi (51)
Linux Kodachi is a Debian-based distribution which can be run from a DVD or USB thumb drive. The distribution filters all network traffic through a VPN and the Tor network, obscuring the user’s network location. The distribution attempts to clean up after itself, removing traces of its use from the computer.
14. Ubuntu MATE (55)
Ubuntu MATE is a desktop Linux distribution which aims to bring the simplicity and elegance of the Ubuntu operating system through a classic, traditional desktop environment — the MATE desktop. MATE is the continuation of the GNOME 2 desktop environment which was used as Ubuntu’s default desktop until 10.10 (when it was replaced by Unity). The project began its life as an Ubuntu «remix», but starting with version 15.04, it was formally accepted as an official member of the Ubuntu family of Linux distributions.
15. Feren OS (57)
Feren OS is a desktop Linux distribution based on Ubuntu and featuring the KDE Plasma desktop. It ships with a tweaked Calamares system installer, a custom theme and fonts, the Vivaldi web browser, boot options for advanced users, and a Feren OS Tour application, among the many home-built features and improvements. Prior to November 2020, the distribution was based on Linux Mint and included an edition with the Cinnamon desktop.
16. Voyager Live (59)
Voyager Live is an Xubuntu-based distribution and live DVD showcasing the Xfce desktop environment. Its features include the Avant Window Navigator or AWN (a dock-like navigation bar), Conky (a program which displays useful information on the desktop), and over 300 photographs and animations that can be used as desktop backgrounds. The project also develops several other editions of Voyager Live — a «GE» edition with GNOME Shell, a «GS» variant for Gamers, and a separately-maintained flavour based on Debian’s «stable» branch.
17. JingOS (61)
JingOS is an Ubuntu-based Linux distribution for tablet computers. It can run desktop Linux applications like VS Code and LibreOffice. The distribution strives to be able to run both GNU/Linux and Android programs.
18. ExTiX (64)
ExTiX is a desktop Linux distribution and live DVD based on Ubuntu, offering a choice of alternative desktop environments.
19. MakuluLinux (74)
MakuluLinux is a rolling-release, desktop distribution based either on Ubuntu’s LTS (long-term support) release or Debian’s «Testing» branch. It includes pre-installed multimedia codecs, device drivers and software for everyday use. MakuluLinux comes in four editions: «LinDoz» — featuring the Cinnamon desktop with the user interface customised to resemble that of Microsoft Windows, «Core» — presenting a highly customised Xfce desktop environment, «Flash» — providing a standard Xfce desktop, and finally «Shift» — delivering a pre-configured GNOME desktop environment.
20. Ubuntu Studio (77)
An official variant of Ubuntu, Ubuntu Studio is a Linux-based operating system for creative individuals in the areas of audio production, video production, graphics design, photography and desktop publishing. It makes professional audio accessible on Linux; it uses the JACK sound server and a kernel built with a low-latency patch. Up until version 20.10 Ubuntu Studio shipped with the Xfce desktop environment, but this was replaced by KDE Plasma in October 2020.
21. Ubuntu Budgie (84)
Ubuntu Budgie (previously budgie-remix) is an Ubuntu-based distribution featuring the Budgie desktop, originally developed by the Solus project. Written from scratch and integrating tightly with the GNOME stack, Budgie focuses on simplicity and elegance, while also offering useful features, such as the Raven notification and customisation centre.
22. UBports (88)
UBports is a community-developed fork of Canonical’s Ubuntu Touch operating system for mobile devices. UBports works on getting the mobile operating system working on new devices, provides software updates and ports new versions of Ubuntu to mobile devices.
23. Ultimate Edition (93)
Ultimate Edition, first released in December 2006, is a fork of Ubuntu and Linux Mint. The goal of the project is to create a complete, seamlessly integrated, visually stimulating, and easy-to-install operating system. Single-button upgrade is one of several special characteristics of this distribution. Other main features include custom desktop and theme with 3D effects, support for a wide range of networking options, including WiFi and Bluetooth, and integration of many extra applications and package repositories.
24. Trisquel GNU/Linux (95)
Trisquel GNU/Linux is a 100% libre Ubuntu-based Linux distribution. Its main purpose is to provide an operating system for varied audience, including home and office users, educational institutions, multimedia workstations, etc. The project is managed by independent developers and is partially funded by donations.
25. Ubuntu Kylin (98)
Ubuntu Kylin is an official Ubuntu flavour whose primary goal is to create a variant of Ubuntu optimised for Chinese users (using the Simplified Chinese writing system), although it also supports other languages. The default desktop is called UKUI (Ubuntu Kylin User Interface) which is based on MATE desktop and is developed with the Qt toolkit. UKUI strives to adhere to the friendly-and-simple design concept. The distribution also includes more than 20 applications developed in-house, including Kylin Assistant, Kylin Video, Kylin Screenshots and Software Center.
26. Robolinux (104)
Robolinux is a user-friendly and intuitive operating system based on the latest long term support release of Ubuntu. One of the project’s more interesting features is the availability of a pre-configured virtual machine support pack with Windows XP or Windows 7 — a VirtualBox setup which allows the user to install and run the Windows operating system seamlessly alongside Robolinux. This is an optional add-on that must be downloaded from the project’s online store.
27. Freespire (106)
Freespire was once a community-run Linux distribution sponsored by Linspire. Freespire was discontinued in 2008. Starting in 2017 Freespire became a free operating system based on Ubuntu and run by PC/OpenSystems LLC. Freespire features the Xfce desktop environment.
28. Ubuntu DesktopPack (111)
Ubuntu DesktopPack is an Ubuntu remix built by Ukraine’s UALinux, an official partner of Canonical. It comes with extra applications, drivers and media codecs, and includes full support for English, Russian and Ukrainian languages. Besides the default Ubuntu build, the project also releases variants based on Kubuntu and Xubuntu, as well as a free extension CD for schools and commercial CD/DVD packs with extra software for desktops, servers and gaming stations.
29. OSGeoLive (137)
OSGeoLive is a bootable DVD, USB thumb drive or Virtual Machine based on Lubuntu, that allows the user to try a wide variety of open source geospatial software without installing anything. It is composed entirely of free software, allowing it to be freely distributed, duplicated and passed around. OSGeoLive provides pre-configured applications for a range of geospatial use cases, including storage, publishing, viewing, analysis and manipulation of data. It also contains sample datasets and documentation.
30. Rescuezilla (142)
Rescuezilla is a specialist Ubuntu-based distribution designed for system rescue tasks, including backups and system restoration. It was forked from the «Redo Backup & Rescue» project which was abandoned in 2012. Like its predecessor, it allows a «bare-metal restore» after any hardware failure directly from the live image. Some of the features include: works directly from the live CD/USB image; works with Linux, macOS and Windows; automatically searches a local area network for drives to backup to or restore from; recovers lost or deleted data files; includes configuration tools for managing disk and drives. Rescuezilla uses a simplified LXDE user interface.
31. SharkLinux (154)
SharkLinux is an Ubuntu-based distribution featuring the MATE desktop. The distribution automatically upgrades packages on the system to apply security patches. The distribution also enables sudo access by default without requiring a password for user convenience. SharkLinux features the Ubuntu Hardware Enablement (HWE) kernel by default.
32. BackBox Linux (158)
BackBox Linux is an Ubuntu-based distribution developed to perform penetration tests and security assessments. It is designed to be fast and easy to use. It provides a minimal yet complete desktop environment, thanks to its own software repositories, which are always updated to the latest stable versions of the most often used and best-known ethical hacking tools.
33. Pearl Linux OS (184)
Pearl Linux OS is a distribution based on Ubuntu. Pearl uses components of the LXDE and Xfce desktop environments to create a desktop experience which looks similar to Apple’s OS X desktop environment. The project calls this hybrid desktop PearlDE. Pearl Linux OS is available in several editions, including GNOME, MATE and PearlDE.
34. CAINE (186)
CAINE (Computer Aided INvestigative Environment) is an Ubuntu-based GNU/Linux live distribution created as a project of digital forensics. It offers a complete forensic environment that is organised to integrate existing software tools as software modules and to provide a friendly graphical interface. The main design objectives that CAINE aims to guarantee are: an interoperable environment that supports the digital investigator during the four phases of the digital investigation, a user-friendly graphical interface, and a semi-automated compilation of the final report.
35. APODIO (190)
APODIO is a Linux live and installation DVD with a large collection of open source audio and video software, as well as graphical utilities for making system administration as simple and intuitive as possible. It is based on Ubuntu.
36. BigLinux (195)
BigLinux is a Brazilian Linux distribution localised into Brazilian Portuguese. It is was originally based on Kubuntu, but starting from 2017 the distribution has been re-born based on deepin. It offers two desktop environments — Cinnamon and Deepin.
37. Enso OS (197)
Enso OS is a Linux distribution based on Xubuntu. Enso features the Xfce desktop with Gala, imported from elementary OS, as the default window manager. The distribution also features the Panther application launcher and the Plank dock.
38. Runtu (199)
Runtu is a Russian desktop Linux distribution based on Ubuntu’s LTS (long-term support) releases. It features full support for Russian and a variety of extra applications, tools and media codecs. There are two separate editions that are produced with a varying degree of frequency; the «Xfce» edition tend to get more attention while the «Lite» edition, featuring the LXDE desktop, is also released and updated from time to time.
39. Linspire (202)
Linspire is a full-featured operating system (based on Debian GNU/Linux and Ubuntu) like Microsoft Windows XP or Apple Mac OS X. Linspire offers the power, stability and cost-savings of Linux with the ease of a Windows environment. In addition, Linspire features exclusive Click-N-Run (CNR) technology that makes installing software on Linspire fast and easy. Note: Linspire was acquired by Xandros Inc. in July 2008 and discontinued as a Linux distribution shortly afterwards. Linspire was later purchased by PC/OpenSystems in 2017 and sold as an Ubuntu-based commercial distribution.
40. Redo Rescue (205)
Redo Rescue is an Ubuntu-based live CD featuring backup, restore and disaster recovery software. It centres around an easy-to-use graphical program for running bare-metal backup and recovery on hard disk partitions, as well as on external hard drives and network shares. The CD also includes several popular data recovery programs and a web browser. The distribution, originally called Redo Backup & Recovery, went on hiatus after a release in late 2012, but was eventually resurrected in 2020 by the Redo Rescue project.
41. SuperGamer (210)
SuperGamer is a live DVD currently based on Ubuntu (previously it was based on VectorLinux), intended to showcase gaming on Linux. The distribution is optimised for a gaming computer environment, with some tweaks to help speed up running from the live DVD. While older version included some open-source and demo games, the newest release does not; however, Steam, GOG Games and The Humble Bundle can be easily installed.
42. CAELinux (215)
CAELinux is a live DVD Linux distribution dedicated to computer-aided engineering (CAD) and finite element analysis. Based on Ubuntu, it features a full software solution for professional 3D FE analysis from CAD geometry. It includes the Salome 3D pre/post processor, Code_Aster non-linear/multi- physics FE solver, Code-Saturne and OpenFOAM CFD solvers, Elmer multiphysics suite, GMSH, Netgen and enGrid 3D meshers, GNU Octave, Rkward, wxMaxima, Scilab, and more.
43. LuninuX OS (217)
LuninuX OS is an Ubuntu-based Linux distribution designed to be beautiful, clean, simple, fast, and stable.
44. Zentyal Server (225)
Zentyal Server (formerly eBox Platform) is a unified network server that offers easy and efficient computer network administration for small and medium-size businesses. It can act as a gateway, an infrastructure manager, a unified threat manager, an office server, a unified communication server or a combination of them. These functionalities are tightly integrated, automating most tasks, avoiding mistakes and saving time for system administrators. Zentyal Server is available in free (Development) and commercial editions. Zentyal is released under the GNU General Public License (GPL) and runs on top of Ubuntu.
45. LliureX (229)
LliureX is a project of the Council of Culture, Education and Sport at the Municipality of Valencia, Spain. The LliureX distribution is an Edubuntu-based live and installation DVD with support for the Valencian and Spanish languages. It is intended as an operating system for educational institutions in the Valencia region. LliureX uses exclusively free software and is distributed free of charge.
46. Greenie Linux (245)
Greenie Linux is a Slovak desktop distribution based on Ubuntu and optimised for users in Slovakia and the Czech Republic. Created as an operating system designed for every-day use and focusing on the needs of book readers and writers, Greenie Linux combines a set of applications for home use, out-of-the-box functionality and Ubuntu repositories. It also includes a set of tools for reading, writing and modifying books and documents. The goal of the distribution is to create a user-friendly desktop system and a useful live CD.
47. Karoshi (248)
Karoshi is a free and open source school server operating system developed by the Linux Schools project and based on Ubuntu. Karoshi provides a simple graphical interface that allows for quick installation, setup and maintenance of a network.
48. NexentaStor (251)
NexentaStor is an enterprise-class unified storage solution built upon the foundation of the open-source file system Nexenta Core Platform, including the ZFS file system. NexentaStor adds to the open source foundation a complete set of managed features, including ZFS and synchronous block level replication, integrated search, console and graphical user interfaces, and optional advanced features, such as management of storage for leading virtualised environments, enhanced mapping and management for Fiber Channel and iSCSI environments, and active/active high availability. A free «developer’s edition» based on the most recent stable Nexenta Core Platform is available free of charge for users with less than 4 terabyte of used disk space.
49. PrimTux (254)
PrimTux is a Debian- and Ubuntu-based distribution developed by a small team of school teachers and computer enthusiasts in educational environments. It is not intended to replace or become the main operating system of a modern computer, but an upgrade for obsolete equipment and benefiting the school or educational environment in the spirit of education.
50. REMnux (260)
REMnux is an Ubuntu-based Linux distribution with a toolkit for reverse-engineering and analysing malicious software. It provides a curated collection of free tools created by the community. Analysts can use it to investigate malware without having to find, install and configure the tools.
51. Leeenux (273)
Leeenux is an Ubuntu-based commercial Linux distribution tailored to netbooks. Several editions, depending on the user interface are available; these include Unity 2D, MATE and LXDE desktop environments.
52. MAX: Madrid_Linux (274)
Madrid_Linux, or MAX for short, is an GNU/Linux distribution created by the Council of Education of Madrid, Spain. It is a live operating system based on Ubuntu. Besides the ability to boot the operating system on any computer, the distribution includes a graphical installer with an option to resize FAT or NTFS partition and create space for installing MAX on a hard disk.