What is open source in one sentence?
Open source is software whose source code is public, allowing anyone to view, modify and share it under licenses that set the rules.
Is open source free?
Not always. Open-source licenses govern usage, distribution and attribution; some software is free to use, while commercial versions may exist with paid support or added features.
For readers who want a practical takeaway: you don’t have to be a developer to think about open source. Consider how the software you use is built, who maintains it, and whether you trust the provider to protect your data. The conversations and experiments around AI-assisted development and cloud services aren’t going away, and they’ll shape what software you can rely on next.