Open source software is free to use and allows developers to inspect, improve and share the code under licences that preserve those freedoms.
Much of the software behind the internet, modern servers and mobile devices is open source. Increasingly, open source projects also compete directly with expensive commercial products used every day by businesses.
1. LibreOffice
LibreOffice provides word processing, spreadsheets, presentations, diagrams and databases, and can be a strong alternative for users who do not need the most advanced Microsoft Office compatibility edge cases.
2. Thunderbird Email
Thunderbird remains a capable, extensible and security-conscious email client that can serve as a practical alternative to Outlook and other commercial mail tools.
3. Nextcloud and beyond
Open source platforms make it possible to run file sharing, collaboration, CRM and many other business services without handing everything to a large subscription vendor.
4. Why this matters
Open source is not just about saving licence fees. It can mean better control, transparency, flexibility and independence. Used wisely, it becomes a serious strategic option rather than a hobbyist curiosity.