Frequently Asked Questions

ASP.NET Zero is a Visual Studio solution. It's built based on layered architecture and other software best practices. It provides a SOLID, strong and scalable solution architecture, pre-built pages and much more.

If you have a business idea and want to build a web application then you can take ASP.NET Zero as your base solution to not waste your time to build common requirements like user, role and permission management, audit logging, setting management, user profile management, localization and so on (see the feature list).

It not only provides many pre-built functionalities, but also makes your daily development work easier by using a complete web application framework: ASP.NET Boilerplate

It also supports multi-tenancy, subscription and payment systems if you want to create SaaS application.

It's built on already known tools like ASP.NET Core, Entity Framework and Angular and so on...

It uses the Metronic theme for user interface.

You get the full source code and change it freely based on your business requirements!

  • It provides a layered, well-defined and documented architectural model. So, your developers will know how to write code in best practices.
  • The solution is mature and solved most of the issues faced while creating an application from scratch.
  • It provides many pre-built funtionalities those are common almost for every application: login, user, role and permission management, audit logs, settings, user profile, multi-language, multi-tenancy and so on. Create a demo to see most of the UI.
  • It's based on open source and community driven ABP framework. It is actively used by thousands of developers and continously developed. It makes your daily development easier by providing base classes and infrastructure and automates your repeating tasks.

So, don't waste your time for common requirements, begin to develop your business idea from the first day.

ASP.NET Zero is built by team behind ASP.NET Boilerplate. So, it's the best UI and application implementation of the framework. Everything in ABP can be directly used ASP.NET Zero. All documentation is valid for ASP.NET Zero too. Since ABP has a comprehensive documentation, it will help a lot while developing your application.

ASP.NET Boilerplate web site provides a free startup template to simply start with the framework. ASP.NET Zero is a production ready enterprise level application base. See comparison table for differences between free startup templates and ASP.NET Zero.

Our licenses have product count restrictions. For example, if you buy a Regular license, you can use it to develop one real product/solution. You can create test/demo projects without any restriction. You can also re-create (re-download) the same project whenever you need. However, you should buy higher licenses if you want to develop more than one product/solution using ASP.NET Zero. You can sell your product to any number of customers or deploy to more than one environment. No restriction here.

ASP.NET Zero license has also developer count restriction. Regular license allows up to 3 developers actively working on your ASP.NET Zero based solution. If you have a larger team, you should consider to buy higher licenses.

Notice that the license system checks only on the development time. It does not check on the production because the license has not a limit for deployment count. It also does not force you to be connected to the internet on both of development and production times.

ASP.NET Zero fully includes Metronic license. You can use metronic with ASP.NET Zero in our terms and restrictions. For example, normally Metronic requires Extended license for SaaS projects, but you can use it with ASP.NET Zero in your SaaS application without any other payment. One restriction here: You can not buy ASP.NET Zero and just use Metronic independently in your non-ASP.NET Zero based projects. You should use Metronic within ASP.NET Zero.
ASP.NET Zero uses Metronic as UI theme. Metronic is one the World's most popular, strong and rich UI theme, probably the first one. That's why we have chosen it. When you buy ASP.NET Zero, you will have all metronic theme layouts and components. You can use all of them in your applications.

ASP.NET Zero licenses include 1-year upgrade and premium forum support. You will also have access to Github repository and watch all changes on ASP.NET Zero.

After your license perid ends, you can continue developing your application and use ASP.NET Zero forever. Also, you can always update ASP.NET Boilerplate and module-zero nuget packages, since they are open source projects and will always be open source. You can continue to access all documentation since it's public. But you will not get ASP.NET Zero upgrades anymore, can not access to Github repository. Also, your premium forum membership ends. You can surely use community section of the forum as always.

If you want, you can extend your license 1-year more by 50% of your purchased license's current price. If you want to extend your license, you should do it until 1-month later of your license expire date.

Yes, you can upgrade to a higher license by just paying the price difference. Upgrades should be requested in first 3 months of your license period. Your license period is automatically extends when you upgrade. You can use license management page to extend your license. Mail to if you need to help.

We can split updating to 2 parts:

1 - ASP.NET Boilerplate (the framework) and module-zero (base domain logic for user, role, tenant... management). They can be easily updated since they are distributed on nuget. Here, a list of all nuget packages:

New releases generally are backward-compatible. If there is a breaking change, we add it to relase notes and document how to migrate. You can upgrade these nuget packages even after your license period ends, since they are open source. So, upgrading this part is easy. Just update nuget packages.

2 - AspNet Zero - the startup template: UI views and application services

This part is not developed as a 'closed' framework/library. Because different companies have very different needs and you will want to extend/change UI upon your needs. That's why we call AspNet Zero as a starter kit/template: All source codes of ASP.NET Zero is on your hands, you can freely modify it upon your needs.

In most cases you don't have to upgrade if you are happy with your solution. Even you might built the same feature yourself before us. If you like new features, you should adapt changes to your existing solution. In this case, Github repository will help you much (, requires purchasing ASP.NET Zero to access). You can compare releases and copy changed parts to your solution. For example, assume that we enhanced Audit Logs page with new features and you want to get these new awesome features. If you did not change this page, you can directly override your page and related classes. If you did change it, then you can see changes on Github and you can merge changes to your code. We also advice you to review each commit to check if it's also needed for you. Because some of they can be bugfixes.