Splashtop是一个商业性 的Linux发行版，它针对个人电脑主板与及其他电脑设备生产商。它由Splashtop Inc.研发。

和多数Linux发行版不同，Splashtop是被设计在唯读的设备上并一起付运的，而不是由用户自己装上的。用户可以安装其他操作系统，但每次只能开启一个，很适合在只需要浏览网页、作即时通信或者其他操作系统有问题不能启动时使用。Splashtop启动只需要5秒钟，所以它在市场推广时被称为「即时启动」(英文：instant-on)。

其实以往，已经有一些产品透过类似概念在不须启动操作系统的情况下播放CD。

Splashtop (previously known as SplashTop) is a proprietary Linux distribution intended to serve as instant-on environment for personal computers. The original concept of Splashtop was that it was intended to be integrated on a read-only device and shipped with the hardware, rather than installed by the user. It did not prevent the installation of another operating system for dual booting. It was an instant-on commercial Linux distribution targeting PC motherboard vendors and other device manufacturers. The first OEM partner for the original Splashtop was ASUS, and their first joint product was called Express Gate. Later, other computer manufacturers also built Splashtop into certain models and re-branded it under different names. The aspects below detailing these events are retained verbatim from past articles, for historical reference.