Computing
- Sandbox (computer security), a virtual container in which untrusted programs can be safely run
- Sandbox (software development), an online environment in which code or content changes can be tested without affecting the original system
- Sandbox (video game editor), a game level editor for Far Cry
- Sandbox game, a genre or mode of some video games for open-ended, nonlinear play
- Sandbox Effect, in Google Internet search rankings
- Sandbox Studios, a computer- and video-game developer (f. 1998)
- Sandboxie, a proprietary isolation program
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