ClassroomScreen, an interactive display board with several widgets and tools
Course managementDigital whiteboards
Description: ClasroomScreen is a tool for managing classrooms in in-person settings. It is essentially a display board or digital screen into which many useful widgets can be integrated, such as an instruction box, a stopwatch, a timer, a random name picker, or a noise level controller, among others. All of these can then appear simultaneously on the same screen. Classroomscreen is available for free with no signup required for use, although having an account allows users to save settings. It was developed by Laurens Koppers.
Evaluation: ClassroomScreen is a straightforward, practical tool which helps teachers manage their in-person classes more efficiently, while also making learning more engaging and interactive for students. It does not take more than ten minutes to set up a personalised ClassroomScreen, and with an account, settings are saved and can be used later on. Only basic IT skills are required. Besides the YouTube tutorial above, this material could be helpful.
Cost: Free with registration + paid plans available.
Usability and tech notes ▼
Time efficiency 
Time needed to learn how to use a tool and its time-saving potential: High with an account and saved settings.
Interface language(s) The number of languages in which the tool is currently available/adaptable to: Dozens of other languages.
Respect for privacy What data does the tool collect and why? What security measures are there? GDPR compliant? : Medium. ClassroomScreen collects only data relevant, aligning with the principle of data minimisation. However, it also collects cookies for the running of the website, some of them without user consent. Its privacy policy mentions the right to object and withdraw consent and exercise data protection rights, such as the right to access, rectify, and erase data. The policy mentions that personal data is processed within the European Union / EEA and outlines the use of additional safeguards for data transferred to other countries, but does not explicitly mention compliance with specific data protection laws like GDPR. See more here and here.
Saving work for future use Can work be saved for future use?: Yes, users with an account can save their settings for later use.