Business / Corporation certification

BBB

 * Better Business Bureau (Canada and USA) : https://www.bbb.org/

Note that BBB Accreditation is not a reliable measure of the trustworthiness of a business. This doesn't mean that BBB Accreditation is entirely useless since revocation of the accreditation would be an indicator of the untrustworthiness of a site and/or business.

The BBB site clearly states, "BBB Accredited Businesses pay a fee for accreditation...", which means that the semblance of trustworthiness is sold to whichever business pays BBB.

It should also be noted that the BBB site clearly states, "BBB accreditation does not mean that the business' products or services have been evaluated or endorsed by BBB, or that BBB has made a determination as to the business' product quality or competency in performing services."

Australia

 * Australian Securities and Investments Commission
 * Search ASIC's Registers
 * Searching ASIC's registers will provide you with information on companies, business names, persons, documents and more.


 * Australian Business Register (ABR
 * ABN Lookup is the public view of the Australian Business Register (ABR). It provides access to the publicly available information supplied by businesses when they register for an Australian Business Number (ABN).


 * Super Fund Lookup
 * Super Fund Lookup contains publicly available information about super funds that have an ABN. It includes funds regulated by the ATO and the Australian Prudential Regulation Authority (APRA).


 * Australian Taxation Office
 * business.gov.au

Canada
Non-Profit are classified with: Letters Patent (CCA-Part II)

For profit are classified with: Articles of Incorporation


 * Canadian Corporation


 * Not for Profit
 * Canadian charity listings

European Commission
Taxation and Customs Union
 * VIES VAT number validation
 * You can verify the validity of a VAT number issued by any Member State

Singapore
The Accounting and Corporate Regulatory Authority (ACRA) is the national regulator of business entities and public accountants in Singapore.
 * Accounting and Corporate Regulatory Authority: http://www.acra.gov.sg/
 * BizFile: http://www.bizfile.gov.sg/
 * ACRA’s online filing and information retrieval system.

Company Check
Check the legitimacy of a Company by name or registered number.


 * Companies House WebCHeck service: http://wck2.companieshouse.gov.uk
 * Companies House (further info and report fraud): http://www.companieshouse.gov.uk/

Note that not all businesses are Companies. Sole Traders and Partnerships are not required to be registered at Companies House.

Charity Check
Check the legitimacy of a UK Charity.


 * Charity Commission (England & Wales): http://www.charity-commission.gov.uk/ - Tel: 0870 3330123
 * Office of the Scottish Charities Register (OSCR)(Scotland) - http://www.oscr.org.uk/ - Tel: 01382 220446

Claims Management Regulator
responsible for regulating businesses that handle certain types of claims for compensation in relation to personal injury, financial products/services (such as mis-sold payment protection insurance), employment matters, criminal injuries, industrial injuries disablement benefit and housing disrepair.


 * Claims management regulation: http://www.justice.gov.uk/claims-regulation
 * Authorised Business Search: https://www.claimsregulation.gov.uk/search.aspx

Company Director Check
Information about Directors includes Full Name, Date of Birth and Registered Address.


 * Company Check Ltd : http://company-director-check.co.uk/
 * Caveat: this is not a government website


 * CompanyDirectorCheck.com : http://www.companydirectorcheck.com/
 * Caveat: this is not a government website

Physician / Health Professional

 * Credentials Verification by State : http://www.noah-health.org/en/usmd/state.html
 * courtesy of: NOAH (New York Online Access to Health)

Charities

 * IRS Publication 78 : http://www.irs.gov/app/pub-78/
 * Publication 78, Cumulative List of Organizations described in Section 170(c) of the Internal Revenue Code of 1986, is a list of organizations eligible to receive tax-deductible charitable contributions. This online version is offered to help you conduct a more efficient search of these organizations.

Patents / Trademarks

 * United States Patent and Trademark Office : http://www.uspto.gov/
 * patent search : http://www.uspto.gov/patents/process/search/
 * trademark search : http://www.uspto.gov/trademarks/process/search/

WARNING: Non-USPTO Solicitations That May Resemble Official USPTO Communications

Global
WIPO - World Intellectual Property Organization : http://www.wipo.int/ WARNING: Requests for Payment of Fees

List of company registers
This is an incomplete list of company registers by country via Wikipedia
 * List of company registers : https://en.wikipedia.org/wiki/List_of_company_registers

CEO E-mail addresses

 * CEO E-mail addresses : http://www.ceoemail.com/