CrunchBase is a database of startups, launched in 2007, held by that provides basic information about startups, including information about founders, employees, financial status, important events, etc., but does not guarantee the information's Accuracy.

ChemSpider is an online chemical database that began its trial run in 2007 and was officially released in March 2008, headquartered in Raleigh, North Carolina, USA. The database records over 35 million molecules. The database contains more than 35 million molecules, with data obtained from 490 sources, including the U.S. Food and Drug Administration and the Kyoto Encyclopedia of Genes and Genomes. (Data as of September 2015)

DuckDuckGo is an Internet search engine launched in 2008, headquartered in Paoli, Pennsylvania, USA, which advocates maintaining user privacy and creating a "search engine that doesn't track you. search engine".

AllExperts America's first The answer service website, created in 1998, contains top lawyers, doctors, engineers, scientists and other professionals, and the services provided are free of charge.

The School of Library and Information Studies ( The School of Library and Information Studies (SLIS) is the nation's leading platform for the management and use of library information, aiming to develop information creativity and criticality through a supportive teaching and learning environment, while sponsoring research scholarships that focus on master's, doctoral, and accredited faculty conducting relevant research.

Merriam-Webster Merriam-Webster is the nation's premier provider of language learning services, with an international reputation for providing reliable information in the print and Internet industries for over 150 years. Its products include Merriam-Webster's Collegiate Dictionary (a bestselling American history book) and its newest series of dictionaries for English learners.

American Monkey Survey ( SurveyMonkey is a famous data analysis and survey website in the United States, headquartered in Palo Alto, California, with branches in Portland, Seattle, Washington, Lisbon, Sao Paulo, and Luxembourg. The website uses the Internet as a platform to conduct surveys, collect and analyze data and draw conclusions based on the relevant needs of companies and organizations.

Webometrics ( Webometrics, a well-known web-based metrics site, has been ranking more than 6,000 universities worldwide since 2004, based on public information from the world's universities' own official websites, and is updated once a year in January and July.

MyWeb Search is America's MyWeb Search is a well-known and convenient search engine that displays the closest search results after each search request, maximizing time savings for users with their own online auction store, cars, books, electronics, and more.

SVRF is a search engine site based on Virtual Reality ( VR) content search engine site where users can search and discover the latest and coolest virtual reality content. The site works similarly to other search engines in that most of its content comes from the best and most popular VR site resources indexed on the web.

Peekier is a new Internet search engine, it can show the search results to the user through the page preview, so that it can respect the user's privacy in security, while maximizing the display of the content of the target site, the user can view the site preview to decide whether the target site needs to be clicked to visit.

Gif Cities is an online archive by the world-renowned The Internet Archive, a nonprofit digital archive, has launched a new search engine project that pulls a large number of GIF images from GeoCities, a site building service that stores a large number of early websites, and puts them up, about 4.5 million.