An open search engine which indexes all companies which have an online presence. Filters based on full text search, investments, founding year, location, and many others are available. CoRepo is free and will always stay free as the company search engine.
From my experience, CoRepo provides better search results, with links to the main page of company's official website, allows to group companies on varied criteria. While at Crunchbase information is often outdated or insufficient. Had to verify with official company websites or …