Tools / Lockdown Browser

TestingInfrastructure

Lockdown Browser

Fullscreen exams on your local network, no internet required

A cross-platform desktop app built with Electron. Teachers create exams and host them locally. Students open the app, enter a code, and get locked into a fullscreen exam with no tab-switching, no shortcuts, no escape. Everything runs on your local network.

Open Lockdown Browser ↗Source on GitHub

exam.classroomtools.io · free

Lockdown Browser interface

Research connection

Assessment infrastructure that keeps the exam environment controlled without relying on external services. Read the research →

Related tools

Attention Heatmap interface

Attention Heatmap

Make looking visible across a whole class

Cadence LMS interface

Cadence LMS

A learning management system built around the research

Close Reading interface

Close Reading

Structured visual analysis before interpretation

Something broken? Something missing?

Input from the classroom shapes what gets built next.