Licensing System for .NET Software?

Hi carsonrathi,

I'd answered a similar question recently on this thread.

Here are some of them that might fit your need,

1. LogicNP Crypto Licensing (supports Clickbank and PayPal IPN. Generates license automatically after payment notification. Provides you with sample code)

2. XHEO

3. IntelliLock - Not good with Customer service. I once emailed them a few questions when I was trying out the trial, never heard from them.

4. InstallKey

5. Infratulation

Before you spend any money on this, you need to know that if your software ever gets popular it will likely be cracked. Its easier with a .NET program as in your case and especially if the code was not obfuscated.

Depending on the selling price of your software and the added complexity of using the licensing system and dealing with customer issues with licenses it may not be worth it in the end.

I am not discouraging you from using licensing, but figure out if its worth the hassle and time.

Some are cheap and some are expensive.

Good luck!

Are you a programmer and do you have access to the source code?

If you just want to protect your review copies you can add this super simple code snippet to your Form_Load(Winforms) or Window_Loaded(WPF) event.

Code Snippet:
DateTime endDate = new DateTime(2012, 03, 15); // Add the date you want the review copy to expire. Year, Month, Day.
DateTime currentDate = DateTime.Now;
bool expired = currentDate > endDate;
if (expired)
{
MessageBox.Show("The review copy has expired. The application will now close.");
this.Close();
}

Note: This can be easily disabled in a .NET program by an experienced programmer especially if it has not been obfuscated. Or beat this by changing the computer's date.

Is it possible to create something manually? That is not easily crackable? If you find a solution carsonrathi please let me know via pm?

Hi there,
its some months old post but wanted to give an answer. I have just created a software licensing system for .net programs with name TNT Licensing. Here is the link for a review.

http://www.tntlicensing.com

It was tried by expert crackers and approved as unpatchable. So if you think to get a copy you can contact me anytime. Send a mail to [info@tntprosoft.com] and I will provide you assistance anytime.
Best Regards,
Murat

nice post
thanks for share...

Hello,
Manco .NET Licensing System is the powerful licensing and copy protection software for .NET Windows Forms, WPF, WCF, WWF and ASP.NET applications, controls and components. Manco .NET Licensing System uses very flexible licensing schema with following main features: Strong, Flexible license file content, 47 predefined rules etc..

If you find the time CAPTCHAbiz or anyone else id like you to check out a new thread of mine where i am building out the job scope to have the script made up to suit all our needs. It will be made available for free in the WAR Room.

Here is the thread Clickbank IPN - API For Product Licensing [link is in my signature]

Please add any features you believe should be added - make sure you have read previous suggestions before making your submission. If you are tech savy please describe in detail so your suggestions can be easily integrated into the job scope.


This is to be a tool for those who need to be able to have licensing done that are to work around recurring payments ie software, membership sites and once of sale ticket items.

As stated earlier It will be made available for free in the WAR Room once completed.

2 options in my opinion :

- You can use a licensed solution (I recommend LogicNP Crypto Licensing in this case)
- You can code your own solution

The licensed solution way is not very used in the SEO industry (because once somebody cracks the licensing system, all software using it are vulnerable), most software (including my own) use an inhouse licensing system, if you need more advice PM me I can probably help you get started

However, most software do get cracked over time, then you make changes, time passes, a new crack appears, really a cat and mouse game

You should check out Quick License Manager by Soraco.

QLM can wrap executables so you can protect your own EXE without any code change. If you want more control, you can modify your source code and use their .NET API 2.0+.

The added value of QLM is its integration with several ecommerce providers including paypal. When a customer places an order via paypal, a license key is automatically generated and emailed to the customer.

QLM also handles subscription based licensing beautifully! Upon renewal of the subscription, everything happens automatically, like magic :-).

There's much more to QLM ... it's an all encompassing product but I hope this little blurb wet your appetite. Good luck for your product.