portable server
CFServerUSB - Portable Web Server

Portable Web Server - CFServerUSB ColdFusion Webserver is a standalone, open source, portable ColdFusion web server. Designed to run directly from a USB flash drive or external device, it offers a convenient way for developers to build, test, and deploy ColdFusion-based web applications without needing to install software on the host system. Ideal for on the go development, this tool makes it easy to carry your entire development stack in your pocket.
EasyPHP Portable WAMP Web Server

EasyPHP is a WAMP (Windows, Apache, MySQL, PHP) portable web server that makes it easy to develop, test, and deploy web applications. This powerful tool can be used to create dynamic websites, manage databases, and perform other tasks related to web development. With it, users can quickly set up a local server with all the necessary components for development without having to install any additional software.
Tonido - Personal Web Application Server

Tonido is a Free Personal Web Application Server. This Intuitive Tool enables you to access and share your locally stored content directly through a web browser. It's your own portable server for sharing files and photos and more. For example, it can be used to host your own blog, share torrents, host photo albums, listen to music or Mp3's from anywhere, backup files from one PC to another, etc.
XAMPP Portable Web Server: Best for Developers

XAMPP Portable Web Server is a self contained, portable USB web server environment that allows developers to run full featured websites directly as localhost without installation. Widely regarded as one of the best portable web server solutions available today for web development, testing, and demonstrations.
Distributed as an all in one package, it includes Apache, MySQL (MariaDB), PHP, and Perl, making it suitable for dynamic, database driven websites and applications. This free portable server software been actively developed for well over a decade and maintains one of the largest communities among local web server platforms.
Uniform Server Portable WAMP Server for Windows

Uniform Server is a complete Windows Apache MySQL PHP (WAMP) portable server package that allows users to run a production or live Web Server and host websites directly from a portable device. Web developers can also use Uniform Server to test applications made with Apache, PHP, MySQL, and Perl without needing to use a dedicated server or web host.

