licensing

I am having a very big problem. That is "How to Create License for my software". OK, Think this is my License key - 12345YW when the user enter this license key , the software should allow him to use the software. All right, once the user enter the license key, my software must remember he has entered the valid key, right?(because from next time onwards, it don't have to prompt license dialog) My question is, How can I make my software to remember the user had entered the license? In windows based apps, what most of they do is entering an entry to the windows registry. Can I do the same? (Then

I want to sell my Java application using PayPal. When a payment is received, the customer is mailed a one-time download link to my application. My question is, how do I prevent people from sending the .jar file to their friends/uploading it on the internet? Obviously I need some kind of check in the application which only allows it to run on one computer. And that's another problem, I don't want a customer to have limitations on one computer, they should be able to run it at home and work etc. Maybe some kind of cd-key would do the trick? Is there any cd-key resources for Java out there? Or

I find it unnecessarily duplicated to have it in each code file, but I see it on most open source projects. Should I do that same, or just include a single license outside the code? Rook A single one outside the code, please! I don't know about the others, but I hate seeing the same thing on top of every file. I think I've read it a few times, just by page_down-ing through it. EULA is the wrong term here, as the people looking at source code usually are not end users. Legally, it makes no difference either; copyright does not need to be declared explicitly. Basically, all you achieve is a

I'm implementing a small application in C, which I would like to sell as shareware for a reasonable price later on. It will start of with a 30-day trial, which I am already quite certain of how to implement it. The problem I have, though, is that I am not quite sure how to implement the product key verification. What I have in mind is that the customer can sign up on my webpage (after trying the product for a while), pay for the product, and get a product key in the form of aaaaa-bbbbb-ccccc-ddddd-eeeee via e-mail (or maybe available via his profile on my website). No problem so far. He/She

I am having trouble understanding the usage permissions of open source. I read somewhere that GPL or LGPL enforces that software that uses GPL software must also be released open-source. I want to create an application that uses some open-source image recognition library. Can I sell this application or does it have to be open source? Thanks! LGPL allows you to use and distribute the open source software with your application without releasing the source code for your application. GPL requires you to release the source code of your application if you choose to use and distribute the GPL

Can the tools.jar which comes with the Oracle JDK be distributed along with a commercial product which depends on it (that is, legally, according to the terms of Oracle's license)? Whether yes or no, please provide a reference to substantiate your answer. According to my reading, yes, but with some caveats: You must redistribute the entire Oracle JDK, OR the entire JRE with just "The javac bytecode compiler" which includes tools.jar; that redistribution is allowed to be "bundled" with your app. Redistributed JDK or JRE must be "complete and unmodified" (minus a couple sections about things you

We are developing a Pdf parser to be used along with our system. The requirement is such that, we store all the information on any pdf documents and should be able to reproduce the document as such (with minimal changes from original document). We did some googling and found iTextSharp be the best mate for our purpose. We are developing our project using .net. You might have guessed as i mentioned in my title requiring comparisons for specific versions of iTextSharp (4.1.6 vs 5.x). We know that 4.1.6 is the last version of iTextSharp with the LGPL/MPL license . The 5.x versions are AGPL. We

This question already has an answer here: Create an application that will expire after a trial period [duplicate] 5 answers how to create trial period setup file for 30 days of my c# windows application? Making C# application a 30 day trial version http://www.dotnetspider.com/forum/130150-Making-C-application-day-trial-version.aspx How to add more functionality in setup file? - C# http://www.daniweb.com/forums/thread226490.html One possible solution is to use the registry and write there in some key the installation date. This step is done in the installation time/ first time the application