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Open source

UK //ˈəʊ.pən sɔːs//US //ˈoʊ.pən sɔrs//

Definition

Software with publicly accessible source code that anyone can modify.

In simple words: Software that anyone can see and change.

Examples

Many programmers prefer using open source tools for their projects.
Open source software fosters collaboration among developers.
The best part about open source is the community it creates.
You can find a wide range of open source applications online.
Open source licenses allow anyone to use and modify the software.
Many companies use open source frameworks to build their products.

Usage notes

Used mainly in tech and software discussions. Avoid in non-technical contexts. Often considered positive because it promotes collaboration.

Grammar pattern

open source + noun

Memory hint

Think of 'open' as doors to a library where anyone can borrow books.

Collocations

open source software
open source community
open source project

Synonyms

public domain
free software
collaborative software

Common mistakes

Confused with 'closed source', which means the opposite.
Using it to describe non-software topics.
Misunderstanding that it's only free software; it can also be paid.