Apache ActiveMQ® Classic is a popular and powerful open source messaging and Integration Patterns server. It supports many Cross Language Clients and Protocols, comes with easy to use Enterprise Integration Patterns and many advanced features while supporting Jakarta Messaging 3.1, JMS 2.0, and JMS 1.1 and J2EE 1.4+

Apache ActiveMQ Classic

Zero-Clause BSD

Attribution Assurance License

Academic Free License v. 3.0

GNU Affero General Public License version 3

Adaptive Public License 1.0

Apple Public Source License 2.0

Apache Software License, version 1.1

Apache License, Version 2.0

Artistic License 1.0

Artistic License (Perl) 1.0

Artistic License 2.0

1-clause BSD License

The 2-Clause BSD License

BSD+Patent

The 3-Clause BSD License

Lawrence Berkeley National Labs BSD Variant License

Boost Software License 1.0

Blue Oak Model License

Cryptographic Autonomy License

Computer Associates Trusted Open Source License 1.1

Common Development and Distribution License 1.0

Cea Cnrs Inria Logiciel Libre License, version 2.1

CERN Open Hardware Licence Version 2 – Permissive

CERN Open Hardware Licence Version 2 – Strongly Reciprocal

CERN Open Hardware Licence Version 2 – Weakly Reciprocal

The CNRI portion of the multi-part Python License

Common Public Attribution License Version 1.0

Common Public License Version 1.0

CUA Office Public License

Educational Community License, Version 1.0

Educational Community License, Version 2.0

Eiffel Forum License, version 1

Eiffel Forum License, version 2

Eclipse Public License - v1.0

Eclipse Public License - v2.0

EU DataGrid Software License

The European Union Public License, version 1.1

The European Union Public License, version 1.2

Elastic License 2.0

Entessa Public License Version. 1.0

Fair License

Frameworx License 1.0

GNU General Public License version 2

GNU General Public License version 3

Historical Permission Notice and Disclaimer

ICU License

IPA Font License

IBM Public License Version 1.0

ISC License

Intel Open Source License

JAM License

GNU Library General Public License version 2

GNU Lesser General Public License version 2.1

GNU Lesser General Public License version 3

Lucent Public License, Plan 9, version 1.0

Lucent Public License Version 1.02

LaTeX Project Public License, Version 1.3c

Licence Libre du Québec – Permissive version 1.1

Licence Libre du Québec – Réciprocité version 1.1

Licence Libre du Québec – Réciprocité forte version 1.1

The MIT License

MIT No Attribution License

Mozilla Public License 1.0

Mozilla Public License 1.1

Mozilla Public License 2.0

Microsoft Public License

Microsoft Reciprocal License

MirOS License

Motosoto Open Source License

Mulan Permissive Software License v2

Multics License

NASA Open Source Agreement v1.3

The University of Illinois/NCSA Open Source License

The Nethack General Public License

Nokia Open Source License Version 1.0a

Non-Profit Open Software License version 3.0

NTP License

NAUMEN Public License

SIL OPEN FONT LICENSE

Open Group Test Suite License

OpenLDAP Public License Version 2.8

Open Logistics Foundation License v1.3

OSET Public License version 2.1

Open Software License 1.0

Open Software License 2.1

Open Software License 3.0

PHP License 3.0

PHP License 3.01

Python License, Version 2

The PostgreSQL License

The Q Public License

Reciprocal Public License 1.1

Reciprocal Public License 1.5

RealNetworks Public Source License Version 1.0

The Ricoh Source Code Public License

Sun Industry Standards Source License

Sun Public License, Version 1.0

Server Side Public License, v1

Simple Public License

The Sleepycat License

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