Infralution Licensing System
Infralution Licensing System (ILS) is an affordable, 100% . NET solution for licensing components and applications using simple and secure encrypted license keys. ILS uses a public key encryption algorithm to generate encrypted license keys which are virtually impossible for a cracker to reverse... The runtime licenses are keyed to the design time license that generated them - but they can not be extracted and used as design time licenses, nor can a design time license be reverse engineered from the runtime license.
http://www.infralution.com/downloads/InfralutionLicensing.msi - 2Mb - Download - Screenshot

SoftwareShield System
The SoftwareShield System is a full featured licensing and copy-protection system for software developers who create Windows applications on the x86 platform. The SoftwareShield System allows you to make copy-protected, demo, trial, pay-per-use, leased and many other versions of your software. ... License Models You Can Use: Trial (evaluation licenses) - A time limited license used for evaluation purposes. ... " Pay-per-use - License fees are based upon actual usage. ... The day of expiration is generally set on the day the license is issued.
http://www.softwareshield.com/download/SSSys.zip - 9Mb - Download - Screenshot

Protection! Licensing Framework Standard
Protection! - a licensing framework that can be embedded into custom Java applications or components only allowing the permitted use according to the supplied license. Protection! Licensing Framework for Java, delivers powerful and feature-rich licensing solution. ... Ability to specify a resolver that can be used to intercept and fix any issue that occurs during license reading and/or validation * Quick and easy embedding into custom applications * Ability to get full control of license reading and validation * Ability to specify an unlimited set of application features * Trial version...
http://www.jproductivity.com/produ...ds/2.0/Protection_2_0_windows.exe - 14Mb - Download - Screenshot

Quick License Manager
Quick License Manager is an easy to use license manager that creates professional and secure license keys to protect your software against piracy. Create permanent or evaluation (trial) license keys in a snap. Quick License manager can create generic keys that are not bound to a PC or... With Quick License Manager, you can add licensing to your software application in less than 1 hour. ... A simple COM API allows you to validate the license key from within your application. ... Sample programs are provided to guide you through the process.
http://www.interactive-studios.net/products/qlm/qlm.exe - 232Kb - Download - Screenshot

StarForce ProActive SN100
Licensing and protection solution including 100 release and ten test licenses to protect a software product. The Client is free to customize the given amount of licenses according to his preferences and the product target audience requirements. Save revenue loss by protecting your software... License black-listing to prevent stolen licenses activation. ... The software product is locked to hardware parameters of the end user's computer and cannot be started till the license is activated. ... Selective regions blocking to prohibit activations from unwanted locations.
http://www.star-force.com/share/StarForce_ProActive_ENG.zip - 4Mb - Download - Screenshot

Licensing .Net Pro
100% . NET solution for licensing controls and applications written with any language designed for the . NET Framework (C#, VB. NET etc). Currently available for . NET Framework 1. 1 & 2. 0. It uses 2 different licensing schemas: Licensing by issue license file, and Licensing by secure encrypted... It allows you to store any additional information in the license file, so you can lock/unlock some features of your product, or make some additional tests to validate license. ... Custom license fields.
http://www.licensingdotnet.com/manco.licensing.zip - 5Mb - Download - Screenshot

EULA Magic
EULA Magic is the ultimate visual basic distributed application license form builder incorporating both one off retail version licenses, or trial version licenses that include your promotional material with a purchase button to optimise sales. EULA Magic uses FieldCraft's revolutionary... Specific features include: Optional one-off license display Multiple agreement license buttressing Sets optional trial period from first agreement to license Optional license form promotion of product with purchasing button Optional GreenLock trial period reinforcement that is environmentally friendly...
http://www.fieldcraft.biz/Downloads/Files/eul04.zip?padgen - 2Mb - Download - Screenshot

License4J
License4J is a pure Java library for creating and validating licenses. The key concept is features of a license. You can easily add any feature to your license file, i. e. name of the product, version, expiry date, number of executable instances, customer's name, company, IP address, etc. ... You can have unsigned features - features that are not used in the signature generation/verification and therefore can change their values leaving the license valid. ... Also the library provides methods for signing arbitrary content that should not be changed by the user.
http://www.smardec.com/downloads/License4J-1.2-demo.zip - 57Kb - Download

PDF OwnerGuard (Personal Edition)
OwnerGuard is a new technology in digital rights management and data protection systems which is designed specially for file distribution and licensing over internet and local networks. PDF OwnerGuard is the first member of OwnerGuard family that uses this technology for Adobe PDF documents. ... Offline licensing system (License Code) for licensed files to ease data marketing on the net. ... Support Machine Dependent/Independent license codes. ... Fully functional hierarchical reseller licensing system to ease license distribution on the net.
http://www.armjisoft.com/files/PDFOwnerguardPersonal.exe - 3Mb - Download - Screenshot

PC Guard for Win32
PC Guard for Win32 V5 is a professional software protection and licensing system. With PC Guard for Win32 you can easily protect Windows 95/98/ME/2000/NT/XP 32bit EXE/DLL applications from illegal distribution and reverse engineering. Even more, you don't need any source code editing or... - License transfer feature! ... - Remove license feature! ... - Secure and simple license management! ... - Limited license feature! ... You can rent or lease your software by setting license expiration period.
http://www.sofpro.com/files/demo/pcgw32d.exe - 841Kb - Download - Screenshot