"Our findings show that, in almost all the cases, a transition toward
open source reports of savings on the long term"
"Costs to migrate to an open solution are relevant and an organization
needs to consider an extra effort for this. However these costs are
temporary and mainly are budgeted in less than one year."
About OOo:
"Our findings report no particular delays or lost of time in the daily
work due to the use of OpenOffice.org (...) OpenOffice.org has all the
functionalities that public offices need to create documents,
spreadsheets, and presentations. (...) OpenOffice.org is free,
extremely stable, and supports the ISO Open Document Standard."
http://ec.europa.eu/enterprise/ict/studies/publications.htm
Study on the Economic impact of open source software on innovation and
the competitiveness of the Information and Communication Technologies
(ICT) sector in the EU
http://ec.europa.eu/enterprise/ict/policy/doc/2006-11-20-flossimpact.pdf