Antithesis

Antithesis is a company that provides a cloud-based platform designed to enhance the reliability of software systems through continuous testing. The platform allows developers to upload their software as container images, which are then tested under various conditions within a simulated environment that replicates the entire service architecture, including all hardware and network components. This environment supports deterministic testing, ensuring that any bugs discovered are consistently reproducible. Antithesis employs techniques such as fault injection to simulate errors like network retries, thread hangs, or node restarts, and uses state space exploration and advanced fuzzing methods to uncover potential issues. The platform automatically generates reports that summarize all detected bugs and offers an SDK that enables users to define additional test properties tailored to their specific systems. Antithesis maintains offices in Northern Virginia, USA, and Cambridge, UK. Additionally, the company provides a GitHub Action to facilitate testing processes, hosts a blog discussing topics like deterministic hypervisors and their debugging approach, and maintains a brand page with guidelines on logo usage.