Noinstall

Noinstall refers to software designed to run without a formal installation process or substantial changes to the host system. Noinstall software is typically portable, self-contained, or runnable from a user directory or removable media, allowing execution without system-wide changes or administrative privileges.

Common approaches to noinstall distribution include self-contained binaries, bundled runtimes and libraries, and packaging formats that do not require installation. For Linux, formats like AppImage package an application and its dependencies into a single executable. On Windows, portable applications are distributed as standalone executables or ZIP bundles that can be run without an installer. These methods aim to minimize or eliminate the need for traditional installers and system integration.

Examples and scope: noinstall concepts are widely used in portable software ecosystems. Windows portable apps from platforms such as PortableApps.com provide software that runs from a folder or USB drive. Linux users may encounter AppImage or similar self-contained formats that avoid system-wide installation. Noinstall approaches are common for testing software, running on restricted systems, or enabling software use across multiple machines without administrative access.

Advantages include portability, ease of transfer between machines, and the ability to run software in restricted environments without admin rights. Disadvantages include limited access to OS-wide integration (such as proper menu entries or automatic updates), potential duplication of libraries, updates that require manual handling, and security considerations when sourcing from untrusted providers.

See also portable software, standalone application, AppImage, Windows portable apps.