1)   Licence Protector 2.6.1
Licence Protector generates Demo- and time limited versions, extensive software copy protection, supports concurrent user testing, Web activation, electronic Software Distribution, protects multiple modules per application, available in 13 languages
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 2)   EasyLicenser 2.0.02
Easylicenser is the complete software solution for your license management needs. It provides - Ease-of-use for you as well as your end-user - Low-cost: effectively a small % of your product sale price - Versatility and unlimited expansion
Software Licensing, Anti-piracy software, Digital rights management, Electronic license management, License management, License manager, Software copy prevention, Software copy protection, Software development tools, Software license management,

 3)   Quick License Manager 2.4
Easy to use license manager that creates professional and secure license keys to protect your software against piracy. A simple COM API lets you validate license keys from within your application.
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 4)   LM-X License Manager v2.0
LM-X License manager enabling ISVs to control and safely distribute their software. The software supports a wide range of license models including trial licenses, standalone licenses, network licenses, expiring licenses, borrowed licenses and more.
license manager, software license management, software copy protection, anti-piracy software, floating license manager, floating license, concurrent license, network license,

 5)   Zend Guard 5.0
Zend Guard, with its key components of Encoding, Obfuscating and Licensing, protects your PHP applications from reverse engineering, unauthorized customization, unlicensed use and redistribution. Zend Guard helps you distribute your PHP apps securely
Encode, encoder, obfiscation, obfiscate, license manager, license generator, php,