The computing firm Microsoft has increased the number of free products charities can receive from it each year.
It will raise the number from six to 10 a year, using the Charity Technology Exchange service, which helps charities to access free software.
Products offered include the Windows 7 operating system, Office 2010 and most other main software packages produced by the company.
Charities will also be able to put in requests as often as they like to CTX, instead of being limited to one request a year. They will be able to request up to 50 copies of each product and will be charged a small administration fee for each request. The fee varies but is usually only a few pounds.
Richard Craig, chief executive of the Charity Technology Trust, the charity that runs CTX, said the initiative would give more not-for-profit organisations greater access to up-to-date technology.
"We look forward to working closely with UK-registered charities to help them acquire the right technology to help support their staff and to achieve their charitable missions," he said.
Microsoft has been running a software-donations programme in the UK since 2006, and says it has provided more than £47m worth of software to charities.