{"id":2321,"date":"2026-11-09T09:15:06","date_gmt":"2026-11-09T07:15:06","guid":{"rendered":"https:\/\/teszarypeter.hu\/?post_type=publikacio&p=2321"},"modified":"2026-11-09T09:17:25","modified_gmt":"2026-11-09T07:17:25","slug":"mi-az-az-open-source-es-miert-nyilt-forraskodra-epitem-a-rendszereimet","status":"publish","type":"publikacio","link":"https:\/\/teszarypeter.hu\/en\/publikacio\/mi-az-az-open-source-es-miert-nyilt-forraskodra-epitem-a-rendszereimet\/","title":{"rendered":"What is Open Source and why am I building my systems on open source?"},"content":{"rendered":"

In the digital world, there is a stubborn but very logical saying: \u201cIf it\u2019s something for free, you\u2019re the product.\u201d<\/em> We experience this every day for Facebook, Google and most free services by selling our data.<\/p>\n\n\n\n

However, there is a technological ecosystem that goes completely against this logic: the world of open source software. Here we have access to world-class operating systems and devices completely free of charge, behind which there is no phishing, no hidden advertisements, and they do not want to be locked into a paid \u201cgolden cage\u201d. But what exactly is this, what do developers make a living from, and why is it worth it for a company manager or developer to build their work on it?<\/p>\n\n\n\n

What does \u201cOpen Source Code\u201d mean?<\/h3>\n\n\n\n

The code of traditional, closed (proprietary) software, such as Windows or macOS, is encrypted. You buy the right to use it, but you never see what happens under the hood. The software does what the manufacturer wants: if Microsoft decides to put advertisements in the Start menu or reboot your machine in the middle of work with an update, you can't do anything.<\/p>\n\n\n\n

For Open Source Software (OSS) the entire code is public, can be read, modified and redistributed by anyone<\/strong>. This gives a transparency that is unthinkable in closed systems.<\/p>\n\n\n\n

If it's free, what do developers make a living from?<\/h3>\n\n\n\n

This is the most common question. How is it that thousands of engineers develop an operating system that I can then download for free? Open Source is not a charity, but a rock-hard and stable business model that stands on multiple legs:<\/p>\n\n\n\n

    \n
  1. Enterprise Support:<\/strong> The software is free, but if a large company (e.g. banks, exchanges, streaming providers) uses it on its servers, it will pay for official round-the-clock technical support and dedicated troubleshooting. This is where Red Hat or Canonical (the developer of Ubuntu) built its billion-dollar business.<\/li>\n\n\n\n
  2. Hardware ecosystem:<\/strong> Many people make software free by selling the hardware that comes with it. An excellent example is System76, which develops the excellent Pop!_OS system for free while selling premium Linux computers.<\/li>\n\n\n\n
  3. Community and Corporate Sponsorship:<\/strong> The biggest tech companies (Google, IBM, Microsoft) support open source projects with millions of dollars because their own cloud infrastructure is built on these technologies. They also have an interest in keeping the system stable.<\/li>\n<\/ol>\n\n\n\n

    Why Choose Open Source?<\/h3>\n\n\n\n

    As a pragmatic system builder, I use Linux not because it is \u201ccool\u201d, but because it gives me the greatest freedom and stability. In my daily work at my main workstation Pop!_OS<\/strong>I run , and on my servers Ubuntu Server<\/strong> and Arch Linux<\/strong>I'm using . There are very rational reasons for this:<\/p>\n\n\n\n

      \n
    • Absolute control and transparency:<\/strong> My computer does what I tell it to do. There are no forced restarts, no telemetry (data collection) services running in the background, robbing resources. When I run local AI models in Docker, I know my hardware is 100%-he's working on my job.<\/li>\n\n\n\n
    • Maximum safety:<\/strong> Because of open code, thousands of independent security experts around the world are constantly reviewing software. If a niche is found, it is often patched within hours \u2013 there is no need to wait weeks for an official update package from a large company.<\/li>\n\n\n\n
    • Flexibility and modularity:<\/strong> Open Source's philosophy is to build small, one-task-perfect tools and connect them together. This way of thinking allows me to build exactly the architecture I need on my own servers, without unnecessary \u201ccode junk\u201d.<\/li>\n\n\n\n
    • Cost-Effectiveness Without License Fees:<\/strong> There are no surprise-increasing monthly fees, no licenses per user. The money saved can then be spent on the infrastructure itself (better hardware, faster servers).<\/li>\n<\/ul>\n\n\n\n

      Open Source is no longer a hobby of a narrow cube layer. The entire modern internet \u2013 including WordPress, which drives most of the world\u2019s websites, Android phones, and cloud services \u2013 is built on this philosophy. Using it is not a compromise, it means taking back quality, safety and total control over your own systems.<\/p>","protected":false},"excerpt":{"rendered":"

      In the digital world, there is a stubborn but very logical saying: \u201cIf something is free, you are the product.\u201d <\/p>","protected":false},"author":2,"featured_media":43,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"slim_seo":{"facebook_image":"https:\/\/teszarypeter.hu\/wp-content\/uploads\/2024\/10\/gutenberg.jpg","twitter_image":"https:\/\/teszarypeter.hu\/wp-content\/uploads\/2024\/10\/gutenberg.jpg","title":"Mi az az Open Source, \u00e9s mi\u00e9rt ny\u00edlt forr\u00e1sk\u00f3dra \u00e9p\u00edtem a rendszereimet? - Tesz\u00e1ry P\u00e9ter","description":"A digit\u00e1lis vil\u00e1gban \u00e9l egy makacs, de nagyon logikusnak t\u0171n\u0151 mond\u00e1s: \"Ha valami ingyen van, akkor te magad vagy a term\u00e9k.\""},"_slim_seo_primary_term_category":13,"_slim_seo_primary_term_post_tag":0,"footnotes":""},"categories":[13],"tags":[],"class_list":["post-2321","publikacio","type-publikacio","status-publish","format-standard","has-post-thumbnail","hentry","category-open-source"],"openstation_lock":null,"openstation_contributors":[],"openstation_attached_media":[43],"meta_box":[],"_links":{"self":[{"href":"https:\/\/teszarypeter.hu\/en\/wp-json\/wp\/v2\/publikacio\/2321","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/teszarypeter.hu\/en\/wp-json\/wp\/v2\/publikacio"}],"about":[{"href":"https:\/\/teszarypeter.hu\/en\/wp-json\/wp\/v2\/types\/publikacio"}],"author":[{"embeddable":true,"href":"https:\/\/teszarypeter.hu\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/teszarypeter.hu\/en\/wp-json\/wp\/v2\/comments?post=2321"}],"version-history":[{"count":2,"href":"https:\/\/teszarypeter.hu\/en\/wp-json\/wp\/v2\/publikacio\/2321\/revisions"}],"predecessor-version":[{"id":2323,"href":"https:\/\/teszarypeter.hu\/en\/wp-json\/wp\/v2\/publikacio\/2321\/revisions\/2323"}],"wp:attachment":[{"href":"https:\/\/teszarypeter.hu\/en\/wp-json\/wp\/v2\/media?parent=2321"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/teszarypeter.hu\/en\/wp-json\/wp\/v2\/categories?post=2321"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/teszarypeter.hu\/en\/wp-json\/wp\/v2\/tags?post=2321"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}