⚡ Operating Systems in Bulgaria

Server operating systems are designed for computers that provide network services, such as hosting websites or storing data.

Bulgaria is a Southeastern European country with a population of around 6.5 million people.

According to our research, operating systems are detected on 10.6% of websites from Bulgaria.

⭐ Most Popular in 2026

The following chart shows the top operating systems on websites in Bulgaria in 2026, based on market share.

The most popular is Linux, which dominates the market with an overwhelming 80.9% share.
It is followed by Ubuntu with 18.2% and Debian with 15.2%.

Linux 80.9%
Ubuntu 18.2%
Debian 15.2%
Windows 12.4%
CentOS 8.1%
Unix 4%
FreeBSD 2.8%
Rocky Linux 0.7%
AlmaLinux 0.3%
Red Hat Enterprise Linux 0.07%
Fedora 0.07%
Amazon Linux 0.07%
Oracle Linux 0.07%
Gentoo 0.07%

🚀 Highlights

Here is a list of the top systems that are more popular in Bulgaria than worldwide.
Differences between global and country rankings are shown in parentheses.

2. Ubuntu ^(-1)
3. Debian ^(-1)
7. FreeBSD ^(-2)
8. Rocky Linux ^(-2)
11. Fedora ^(-1)
13. Oracle Linux ^(-1)

✨ Best Operating Systems

Below is a more detailed list of 14 operating systems used on sites from Bulgaria, ranked by their market share.

Rank	Name	Market share
1	Linux San Francisco, California, United States A family of open-source, Unix-like operating systems based on the Linux kernel, originally created by Linus Torvalds and now maintained by a global community of contributors. FreeOpen source	80.9%
2	Ubuntu London, United Kingdom A free operating system based on Debian GNU/Linux, designed for use on desktops, laptops, servers, and mobile devices. FreeOpen source$500+/year	18.2%
3	Debian New York, United States A free and open source Linux distribution. FreeOpen source	15.2%
4	Windows Redmond, Washington, United States A family of proprietary operating systems from Microsoft used on personal computers, servers, and virtualized environments. $1,176+	12.4%
5	CentOS Raleigh, North Carolina, United States A discontinued open-source Linux distribution compatible with RHEL. Legacy	8.1%
6	Unix San Francisco, California, United States A family of multitasking, multi-user computer operating systems.	4%
7	FreeBSD Boulder, Colorado, United States An open source Unix-like operating system designed for reliability, performance, and advanced networking across servers, desktops, and embedded systems. FreeOpen source	2.8%
8	Rocky Linux Albany, California, United States An open-source enterprise operating system designed to be 100% bug-for-bug compatible with Red Hat Enterprise Linux. FreeOpen source	0.7%
9	AlmaLinux Estero, Florida, United States An open-source, community owned and governed, free enterprise Linux distribution focused on long-term stability. FreeOpen source	0.3%
10	Red Hat Enterprise Linux Raleigh, North Carolina, United States A commercial Linux distribution developed by Red Hat for the enterprise market. $383.90+	0.07%
11	Fedora A Linux distribution developed by the Fedora Project. FreeOpen source	0.07%
12	Amazon Linux Seattle, Washington, United States A supported and maintained Linux image provided by Amazon Web Services for use on Amazon Elastic Compute Cloud. Free	0.07%
13	Oracle Linux Austin, Texas, United States A Linux distribution based on RHEL source code, freely distributed by Oracle.	0.07%
14	Gentoo Albuquerque, New Mexico, United States A Linux distribution built using the Portage package management system.	0.07%

👉 See Also

🌎 Operating Systems in other countries

Data is based on the analysis of 12,911 websites from Bulgaria.
Statistics were last calculated on March 21, 2026.
For details, see our methodology and disclaimer.