Cortex, an open source and free software, has been created by TheHive Project for this very purpose. Observables, such as IP and email addresses, URLs, domain names, files or hashes, can be analyzed one by one or in bulk mode using a Web interface. Analysts can also automate these operations thanks to the Cortex REST API. By using Cortex, you won't need to rewrite the wheel every time you'd like to use a service or a tool to analyze an observable and help you investigate the case at hand. Leverage one of the several analyzers it contains and if you are missing a tool or a service, create a suitable program easily and make it available for the whole team (or better, for the whole community) thanks to Cortex.