* [Device Preview v3.0.0](https://github.com/aloisdeniel/flutter_device_preview) – A Flutter device-simulation tool that switches running apps between devices, updating MediaQuery inputs like screen size, safe areas, locale, and accessibility without rebuilding.

* [preview-email v3.4.0](https://github.com/forwardemail/preview-email) – Automatically opens your browser and iOS Simulator to preview Node.js email messages sent with Nodemailer.

* [Box Content Preview v3.84.0](https://github.com/box/box-content-preview) – JavaScript library for embedding interactive previews of over 100 file types in web applications.

* [sandboxed v0.3.12](https://github.com/tastyeffectco/sandboxd) – Self-hosted developer sandboxes providing live preview URLs, one-command install, agent-driven code generation, and on-demand sleep/wake.