open-source

Code anyone edits

Open-source describes software whose source code is freely available for anyone to view, modify, and distribute.

The movement emerged as an alternative to proprietary software, where code is kept secret: Linux is an open-source operating system.

The term extends beyond software to any project inviting public collaboration: an open-source textbook, open-source intelligence.

As a verb, to open-source something is to release it under such terms: The company decided to open-source their algorithm.

philosophy

copyleft

Mandatory openness inheritance clause

decentralization · hacktivism · knowledge-sharing · GPL · transparency · freedom · manifesto · ethos · democratization

software

repository

Place for storing things

  • licenseFormal grant of permission
  • GitDistributed version control system
  • forkTined eating tool

merge · commit · patch · Linux · GNU · Apache · Mozilla · kernel · Debian · Ubuntu

licensing

permissive

Tolerant, lacking strictness

  • MITCambridge research university
  • ApacheSouthwestern indigenous nation
  • GPLOpen source license type

copyleft · attribution · derivative · redistribution · royalty-free · compliance · proprietary · relicensing

community

contributors

Those who give help

commits · forking · cloning · patching · issues · IRC · forums · Slack · Discord · meetups

collaboration

contributors

Those who give help

merging · branching · issues · discussion · RFC · consensus · distributed · asynchronous · remote · global

transparency

auditable

Able to be examined

accountability · disclosure · inspectable · trustworthy

Categories
Opposites
licensing and access model

open-sourceproprietary

Legally owned, restricted use

closed-source · proprietary software · commercial software · trade secret · black box

development philosophy

open-sourcewalled garden

Bounded outdoor growing space

secretive · closed-source · proprietary · in-house · opaque

business model

open-sourceproprietary

Legally owned, restricted use

commercial · freemium · enterprise software · SaaS · licensed

Family

open, opening, source, resource, openness, sources, sourced, sourcing, sourcebook

Familiarity
Top 200,000
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Used worldwide · Timeless · Abstract · Rated G