Nexedi, the creator of ERP5, free open source ERP platform, 
has released the first open source ERP for smartphones today – ERP5 Mobile.
The addition of ERP5 Mobile to the collection of freely available Business Templates makes it possible to access ERP5 from any web enabled mobile device such as the Nokia E61 smartphone.
The web enabled and standard compliant Nokia E61 smartphone was certified for ERP5 Mobile as “reference development environment”. The Nokia E61 smartphone was selected because of its effective design and because of the implication of Nokia (with the exception of its patent department) in favour of open source / free software such as Python.
ERP5 Mobile can be downloaded from the public repository at ERP5.