Apache License 2.0

NoneUsed by: Apache HTTP Server, Android (partial usage)

Description

A permissive license that allows users to freely use, modify, and distribute the software, with a requirement to state changes and include the original license.

Key Features

Explicit patent grants
Trademark rules
Clear modification tracking requirements
Licensing compatibility with proprietary software

History & Context

Created by Apache Software Foundation in 2000, updated in 2004. Designed for corporate-friendly open source.

Compatibility
What is license compatibility?
License compatibility indicates whether code under this license can be combined with code under other licenses in the same project without legal conflicts.

License	Compatibility
With gpl	GPL-3.0 compatible when relicensing
With mit	Compatible
With bsd	Compatible
With proprietary	Yes

License Details

Copyleft Strength

None

Legal Enforceability

Well-established in court cases

Notable Projects

Apache HTTP ServerAndroid (partial usage)

License Provisions

AttributionRequired

Source codeModified files only

Modification clauseMust mark changes

WarrantyExplicit disclaimer

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