The service, www.fundingpoint.ie, will offer information on grants from local and central government, the EU, independent foundations and corporate trusts.
The website has been developed by non-profit support body the Wheel, and is intended to allow charities to search for grants that best suit their funding needs.
"It is essential for non-profit organisations to explore all potential funding sources in the current economic climate," said Deirdre Garvey, chief executive officer of the Wheel. "Fundingpoint provides the most user-friendly way for Irish community and voluntary organisations to investigate new funding opportunities.
"It is also a valuable service to grant-makers who wish to present their funding schemes to a wider group of potential beneficiaries."
The project is funded by the Vodafone Ireland Foundation.