Graylog is a log management software company that provides open-source and enterprise solutions for collecting, indexing, and analyzing log data. The company was founded in 2009 by Lennart Koopmann and has its headquarters in San Francisco, California. Graylog's software is designed to help organizations improve their security, compliance, and operational efficiency by providing real-time insights into their log data. The company's open-source software is used by thousands of organizations worldwide, while its enterprise solutions are used by Fortune 500 companies and government agencies. Graylog's software is available on-premises or in the cloud and can be integrated with other IT systems. The company has received funding from Mercury Fund, Crosslink Capital, and Draper Associates, among others.