The article discusses the challenges and solutions for conducting behavioral research online, focusing on the technical barriers and timing issues. It reviews existing tools for online behavioral research and introduces Gorilla, an online experiment builder designed to address these issues. Gorilla aims to make reliable online experimentation accessible to researchers with varying technical skills. The platform includes features such as a graphical interface for task and questionnaire creation, a managed environment for data collection, and tools for timing control. A case study using a flanker task demonstrates the platform's ability to produce accurate results across different participant groups, settings, and equipment. The study found that the flanker effect, which measures attentional skills, was replicated in children from various backgrounds, highlighting the platform's effectiveness in overcoming technical and timing challenges.The article discusses the challenges and solutions for conducting behavioral research online, focusing on the technical barriers and timing issues. It reviews existing tools for online behavioral research and introduces Gorilla, an online experiment builder designed to address these issues. Gorilla aims to make reliable online experimentation accessible to researchers with varying technical skills. The platform includes features such as a graphical interface for task and questionnaire creation, a managed environment for data collection, and tools for timing control. A case study using a flanker task demonstrates the platform's ability to produce accurate results across different participant groups, settings, and equipment. The study found that the flanker effect, which measures attentional skills, was replicated in children from various backgrounds, highlighting the platform's effectiveness in overcoming technical and timing challenges.