yellowTAB
yellowTAB was a German software company primarily known for developing ZETA, an operating system based on the BeOS codebase. The company, which ceased operations in 2006, aimed to provide a user-friendly desktop computing environment for enthusiast markets.
Brand Identity Data
HQ Country
Germany
HQ City
Mannheim
Founded
2001
EU Headquartered
Yes
EU Manufactured
Yes
Ownership Type
private
Stock Exchange
Private
Tax Domicile
DE
AI Trains on User Data
false
B Corp Certified
No
Repair / Recycling
No
Ethical Certifications
None verified
Verified on October 15, 2026
Corporate Lineage
2001
Company formation
yellowTAB was founded in Germany to continue development of the BeOS operating system.
2005
ZETA Release
The company released the final version of their ZETA operating system based on BeOS.
2006
Ceased operations
yellowTAB ceased business operations and filed for insolvency.