The Charity Commission for Northern Ireland has made the information on its charity register available to the public for the first time.
The CCNI has made a range of information available on its website, including the names of charities on the register, details of their purposes, beneficiaries, address, income and expenditure.
It will also share data generated by research into public trust and confidence in Northern Ireland, the regulator said in a statement.
It said the move was part of a public sector drive towards greater transparency and the CCNI was one of the first non-departmental bodies in Northern Ireland to release more data.
Frances McCandless, chief executive of the CCNI, said: "When public bodies publish the information they hold it not only increases transparency, but also enables third parties to use data that was previously unavailable to them to do powerful and ground-breaking things.
"By making the information we hold available for wider use, we hope to stimulate discussion and innovation both within the third sector and beyond."
Charity registration for Northern Ireland has been a requirement only since 2013, so many organisations that have been operating as charities have not yet completed the registration process.
There are currently 4,017 charities on the register, with more than half of them added in the past year. Registered charities will be required to submit accounts from next year.