Beagle is described as 'search tool that ransacks your personal information space to find whatever youre looking for' and is an app in the File Management category. There are more than 50 alternatives to Beagle for a variety of platforms, including Windows, Linux, Mac, Xfce and Online / Web-based. The best alternative is Everything, which is free. Other great apps like Beagle are DocFetcher (Free, Open Source), Recoll (Free, Open Source), Agent Ransack (Freemium) and Tabbles (Freemium).
AIKIN is a powerful new desktop search that can find item names and content using advanced pattern recognition and semantic awareness, that doesn't require the user to always know exactly how something was named or written.
SCAN (Smart Content Aggregation and Navigation) is a personal semantic content manager for desktop users. It combines search, text analysis, tagging and metadata functions to provide new user experience of desktop navigation and personal document management.
Effective File Search (EFS) is a powerful but easy to use search tool. Search any files on your computer or local network with this effective software. EFS is a real replacement for the Windows Search utility. You can save a lot of time with this excellent file search tool.
VX Search is an automated, rule-based file search solution allowing one to search files by the file type, category, file name, size, location, extension, regular expressions, text and binary patterns, creation, modification and last access dates, EXIF tags, etc.
liquidFOLDERS stores all files in a separate area of your computer we call "store". A store does not have a fixed directory tree (let alone one that you'll have to manage yourself), but is one big thing.
Gaviri SearchOS - Search Desktop, E-Mails, Network and Mobile Devices. The free version is not portable and cannot search in network folders. The universal search engine for all your desktop, mobile and network needs.