iSeek is described as 'handy little program for Mac OS X that allows you to instantly search for anything you seek, no matter what program you are running. iSeek puts a familiar search field in your menu bar, needing just a click or keystroke to start your search!' and is a File Search Utility in the File Management category. There are more than 25 alternatives to iSeek for a variety of platforms, including Windows, Linux, Mac, Online / Web-based and Android. The best alternative is Everything, which is free. Other great apps like iSeek are Keypirinha (Free), DocFetcher (Free, Open Source), FSearch (Free, Open Source) and RecentX (Paid).
Keypirinha is a fast launcher for keyboard ninjas on Windows. Features: * Quickly find and launch plethora of items like applications, files, bookmarks, URLs, sessions (PuTTY, WinSCP, FileZilla), registry keys, ...
DocFetcher is a portable German/English open source desktop search application. It allows you search the contents of documents on your computer. - You can think of it as Google for your local document repository.
RecentX is an innovative launcher that gives you instant access to your files, folders, programs, websites & clipboard history. It automatically remembers your favorite & recent items so that you can launch them even faster.
FileSeek is an easy-to-use file search app that includes advanced functionality for power users! Search through files using simple queries or regular expressions. You can even sync your search settings between computers.