JAM Software
German software firm in Trier developing tools for IT professionals and users: disk space management (TreeSize), mail server and security, banking and developer components, with 200,000+ customers.
JAM Software is a German software company based in Trier, where it develops tools for IT professionals and everyday users. Founded by Joachim Marder and operating for more than 25 years, the firm employs a team of over 35 people - known internally as "JAMers" - working with flat hierarchies and direct interaction between colleagues. Its headquarters, the "JAM Mansion" on the Petrisberg, houses teams working across disk space management, mail server and email security, banking software, and developer components.
The company's flagship product is TreeSize, a disk space management tool used by millions of users worldwide; it began as an answer to a simple question about managing storage on PCs. Around it sit four product portfolios: Disk Space Management, Mail Server & Security, Simple Banking, and Developer Components. Together these serve customers in IT and system administration, software development, mail server management, storage optimisation and financial software. JAM Software reports over 200,000 customers worldwide.
The company emphasises simple solutions to complex problems and maximum customer control over data, delivered through on-premises software with servers in Germany to support GDPR compliance. Its research and development work has been recognised with the BSFZ seal, and it maintains partner programmes with Microsoft, Intel and IBM. Sustainability measures for staff include employer-funded job tickets, eBikes, free e-charging stations and the company's own photovoltaic system.