Welcome To JAM Software

As the creators of TreeSize, we are passionate about developing powerful and highly reliable software solutions for the needs of IT professionals as well as casual users.

  • Millions of downloads per year
  • More than 25 years of industry experience
  • Excellent vendor support

Trusted By More Than 200,000 Customers

JAM Software Customers

What We Do For You

We offer market-leading software solutions for disk space management, powerful tools for fast SEPA payments and optimal security for your IT infrastructure. You will also find shell components for .NET and Delphi. You can try the entire software portfolio free of charge.

What We Do For You?

File & Disk Space Management

Powerful and Fast

Product Overview >
File & Disk Space Management Software
  • Streamlines storage space analysis for visualization of data distribution.
  • Identifies and helps remove unwanted files and space wasters to free up disk space.
  • Meets diverse needs, accommodating both corporate environments and home users.
  • Suitable for both ad-hoc and continuous storage space monitoring.
File & Disk Space Management Software

Be Informed!

We continuously improve our products at the fastest pace possible to provide you with the newest technology and to make our software solutions even more comfortable and efficient. In our News section you will find an overview of the most recently published product updates and the latest news on our company.


Would you like to get updates as well as attractive offers straight to your inbox?

More Solutions

Exchange-Server-Toolbox Icon

Exchange Server Toolbox

Email Archive & Spam and Virus Protection For Your Mail Server

SmartPOP2Exchange Product Icon


Your IMAP and POP3 Connector for Exchange and SMTP Servers With Filter Functions

SpamAssasin-in-a-Box Icon

SpamAssassin in a Box

Service-Based Spam Filter For Your Mail Server

ShellBrowser Product Icon

ShellBrowser Delphi

Native VCL Explorer Shell Controls for Delphi

ShellBrowser Product Icon

ShellBrowser .NET

Native VCL Explorer Shell Controls for .NET


JAM Grows

We continue to grow and our building is growing with us: the construction measures are subsidized by the European Union from the European Fund for regional development and the state of Rhineland-Palatinate.