The article compares two popular open-source log management solutions, ELK and Graylog, outlining their features, usability, and pricing to assist developers, DevOps engineers, and CTOs in selecting the appropriate tool for their needs. ELK, comprising ElasticSearch, Logstash, and Kibana, is highlighted as a robust solution with a steep learning curve, offering extensive functionality and visualization capabilities, though it involves hidden costs and requires intensive management. In contrast, Graylog, which relies on MongoDB and Elasticsearch, is praised for its simplicity and quick setup, including features like authentication and authorization, but it has a limited scope and requires additional tools for advanced functionalities. Ultimately, the choice between the two depends on organizational requirements, with ELK being preferable for speed and flexibility, and Graylog excelling in security log collection and alerting functionalities, emphasizing the need to consider cost and maintenance when making a decision.