== **Tatool** == **Description:** Tatool Web is an open-source software for running online and offline computer-based experiments. It has been developed by Claudia von Bastian (scientist) and Andre Locher (developer). Tatool is conceptualized according to the requirements for running psychological experimental studies. In its original version, Tatool was developed as a Java-based open-source framework. But the process of learning such a complex programming language as Java is an obstacle for the majority of researchers. However, the vision of Tatool is that computer-based experiments should be an easy task to do - for more experienced researchers but also for students and research assistants. The main goal of the new Tatool was therefore to make it easier. It is based on !JavaScript and HTML 5, both of which are very widely used technologies that are much easier and faster to learn. Tatool provides options for running experiments both for programming novices and old hands. With the Experiment Editor, you can create an experiment quickly and easily without writing a single line of code. Or, you can dive deeper and develop completely new tasks in !JavaScript. There's no limit, as Tatool is open-source and hence offers the full range of flexibility. **URL:** ​ [1] https://github.com/tatool/tatool-web [2] http://www.tatool-web.com/#/ == **Project Anatomy**== **Community** **Leadership** **Forking** **Communication** **Roadmaps** **Releases** **Repositories** **Packaging** **Upstream/downstream** **Version Control** **Trackers** **Project Evaluation** == **Fieldtrips**== **Github:** **Openhub:** **Source Forge:** == **Evaluation** == **Licensing** GNU GPL v3.0 **Language** **Activity** **Number of contributors** **Size** **Issue tracker** **New contributor** **Community norms** **User base**