
Description: Sigma File Manager is a free open source file manager for Windows. It has a two-panel interface for easy file navigation and management. Key features include tabbed browsing, hotkeys, bookmarks, support for archives, and a built-in text editor.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: NERD tree is a popular file system explorer plugin for the Vim text editor. It allows users to quickly navigate and open files and folders in Vim without leaving the editor.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API