Companies in Norway must be Registered with the Register of Business Enterprises. Non-profits are eligible for registry with the Register of Non-Profit Organizations.
These registries are maintained by the Brønnøysundregistrene. Businesses can be incorporated by applying to the online 'coordinated register notification' - Altinn, which is also maintained by Brønnøysundregistrene.
This database can be searched by the public for free from the organisation homepage, and can be downloaded in various data format.
"The Register of Business Enterprises registers all Norwegian and foreign businesses in Norway, ensuring legal protection and financial overview." 
"Non-profit organizations that run voluntary activities not motivated by profit are eligible to register. Examples of such organizations are:
- non-commercial foundations that do not distribute funds, or that only - distribute funds to non-profit activities
- commercial foundations that only distribute funds to non-profit activities
- limited liability companies that only distribute funds to non-profit activities." 
"Brønnøysund Register Centre (Norwegian Bokmål: Brønnøysundregistrene, Norwegian Nynorsk: Brønnøysundregistra) is a Norwegian government agency that is responsible for the management of numerous public registers for Norway, and governmental systems for digital exchange of information."