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

Your Data Safe in Your Hands

Our on-premises software gives you maximum control over your data storage

Our on-premises software puts you back in control of your data. Our solutions work entirely without cloud services - your data always stays with you.

And to ensure GDPR compliance at all times, our servers are located in Germany, today and tomorrow.

Our Solutions At A Glance


Ad-hoc Storage Analysis

Product Overview >
Screenshot TreeSize
  • Analyze a wide range of storage systems in minutes
  • Find space hogs and tidy up
  • Create detailed storage reports


Windows SharePoint Azure Amazon S3 Outlook Linux

Screenshot TreeSize


Continuously Monitor Server Storage

Product Overview >
Screenshot SpaceObServer
  • Analyze large storage systems on regular basis
  • Understand storage development with automated reports
  • Benefit from data lifecycle management and assured compliance


Windows SharePoint Azure Amazon S3 Exchange Server Linux

Screenshot SpaceObServer


Find Your Files In Seconds

Product Overview >
Screenshot UltraSearch
  • Search files and content across your entire storage
  • Filter by file type, size, or creation date
  • Perform bulk renaming, moving, or deleting of found files


Screenshot UltraSearch

Unlock Your Full Data Potential

Losing track of your data? We bring structure and maximize your value.

Discover our brand-new data management consulting services.

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.