Licensing
The ActivePerl Package is covered by the ActiveState Community License.

The source code used in the ActivePerl Package comprises of both Open Source and proprietary software components.

All the Open Source components used in the ActivePerl Package are distributed by their original authors under the same licensing terms as Perl. The following is a full list of such components: 

Perl 

Bundled Perl modules: 
Archive-Tar 
Compress-Zlib 
Data-Dump 
Digest-HMAC 
Digest-MD2 
Digest-MD4 
Digest-SHA1 
File-CounterFile 
Font-AFM 
HTML-Parser 
HTML-Tagset 
HTML-Tree 
libwin32 
libwww-perl 
MD5 
PPM 
SOAP-Lite 
Tk 
URI 
XML-Parser 
XML-Simple 

ActiveState Corp., has chosen to use all Open Source content in the ActivePerl Package under the terms of the Artistic License.

All other components included in the ActivePerl Package are original works of ActiveState Corp., and may be used under the terms of the ActiveState Community License.

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When you download and install a language distribution, the license is included. It is not necessary to register or install a separate license in order to use the product. You are given the option to register when you download the product, but this registration is only for the purpose of receiving email announcements regarding new product releases.

When you download and install a programming or productivity tool, you must register in order to receive a license that will activate the product. You cannot use the product without installing a license. Time-limited trial licenses are available for all products. Some products, including Komodo and the Perl Dev Kit, have an educational license that can be purchased at a discount.