Open Data is transforming the way academics source data for research. Previously data was shielded from researchers and locked away in data centers and commercial repositories. OpenCorporates is challenging this head on to create richer data sets by combining crowdsourced and publicly accessible data. We also show full provenance for every piece of data we have.
OpenCorporates has created special tools to help you search, stream, download and map findings for your research.
OpenCorporates is one of the world’s largest open databases. We have data on over 60 million companies around the world ranging from annual accounts to shareholders, financial licences and company directors. The information we have depends on whether the country publishes open data or not and whether they make it easy to extract it.
Where open data is becoming an established practice, such as in the UK and New Zealand, we have exceptionally rich company data which includes Shareholders, Directors and Filings. On the other hand, this information is not available for registers such as Bermuda, and some registers, such as Belize, make a selling point of not being online or open. Explore the website to find interesting patterns in data or trends, and use the filters to select companies with, for example, trademarks, subsidiary data or licensing data.
We've grown from 3 territories and a few million companies to over 115 jurisdictions and 110 million companies, and are working with the open data community to add more each week.
Delaware is an important jurisdiction, favoured by many tech and listed companies. However, it is also one of the most opaque, and considered by some to be a secrecy jurisdiction on a par with the traditional offshore tax havens. Because they don't make the register available as data either as open data or even as a paid-for product, getting data about Delaware companies is difficult. This means that information about Delaware companies is poor, and should be treated with wariness at best.In fact we do have over 700,000 Delaware entities, which is higher than many proprietary business information companies, but as this is a minority of the 3 million past and current Delaware entities we don't list this as one of the jurisdictions we cover. This data has been obtained by 'scraping' the Delaware register very gently, and in fact we believe the only way to have a complete dataset of Delaware is using aggressive scraping with tools such as Tor, or getting it from someone who has done this, and OpenCorporates does not use such tools on principle.
We do not claim our data is free from errors: sometimes a company makes a mistake in its filing, and sometimes our automatic data importers have bugs. However, what makes us unique is that we aim to show a full provenance for every piece of data.
How often the data is updated depends on the source and therefore can vary from every day to every few months. You can see when a particular datum was last updated both on the web page for that data, and from the data available from the API.
On the data entry page, there is an option to download data as JSON, XML and RDF. For options for streaming or downloading large quantities, see the answer below.
These premium features have different pricing models. However, we are very keen on working with educational and research institutions to offer this for free so they can use our data for interesting analysis. Get in touch with us at email@example.com.
It's possible. We use a number of algorithms to match companies. If governments made more data openly available, or kept a record of the company numbers of the companies they do business with, it would be a lot easier. It would help too if companies were forced to put the company number on their website (in the UK they're supposed to but as often as not they don't). Email us and we'll fix it.
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