Apps to Low memory usage

Tabs Outliner is a powerful Chrome extension designed to manage and organize your browser tabs and windows in a hierarchical, tree-like structure. It acts as a comprehensive session manager, allowing you to save, restore, and organize your browsing sessions efficiently. This tool is ideal for users who frequently have many tabs open and need a better way to keep track of them, reduce clutter, and improve productivity.

OneTab is a browser extension for Chrome, Firefox, and Edge designed to significantly reduce memory usage and declutter your tab bar. By converting multiple open tabs into a single list, it optimizes performance and improves browsing organization.

Hiawatha is a secure and flexible open-source web server designed for Unix-based systems. It stands out for its strong focus on security features and lightweight architecture, making it suitable for various web hosting needs.

WinContig is a lightweight, standalone defragmentation tool designed to optimize disk performance without requiring installation. It can specifically target individual files or folders and offers portability, making it ideal for use on removable media.

EPUBReader is a lightweight and efficient browser extension that allows users to open and read EPUB e-books directly within their web browser. It provides a simple and intuitive reading experience without requiring external software.

Preview is the native image and PDF viewer for macOS. It offers essential tools for viewing, annotating, and basic editing of these file types directly within the Apple ecosystem. Designed for efficiency and low resource use, Preview provides a seamless and integrated experience for handling common document and image formats on Mac computers.

MyDefrag, formerly JkDefrag, is a discontinued yet highly effective freeware disk defragmenting utility for Windows. Known for its speed and low resource consumption, it offers robust scripting capabilities for customized defragmentation tasks and can be run portably.

PDFsam Basic is a free, open-source, and incredibly useful tool for handling PDF files. It excels at core functions like merging, splitting, rotating, and mixing PDFs, offering a simple and intuitive interface for both simple and complex tasks. It's available across major operating systems and doesn't require an internet connection.

PDF-XChange Viewer is a versatile and lightweight PDF reader and editor. It offers a wide array of features for viewing, annotating, and manipulating PDF documents, including OCR capabilities and form filling, all within a user-friendly interface.