…TextCrawler enables you to instantly find and replace words and phrases across multiple files and folders..

TextCrawler is simple yet powerful. The first step in using it is choosing a filter for file extensions that are being searched, either from the choices presented or by typing one’s own. The second step is browse to the folder where the files are located. Note that the program’s options has a setting to scan or search subfolders as well. The next step is to type the text to find and the text to replace. TextCrawler supports regular expressions and the star icon beside the Find text area provides some examples for finding such things as dates or IP addresses. The program’s own help files explains regular expressions a bit further. An interesting feature is the ability to find the text being searched for first and then do the replacing after by clicking a separate button, this allows the user to preview all the instances of the found text before moving on. Also the Extract feature allows the user to copy all instances of the found text, this is useful for collecting information based on the search results.
The program also includes a Batch Commands tool to work with find and replace text pairs. Additionally the regular expression tester, which like the Batch Commands tool is located under the Tools menu, reduces the chances of making a mistake. TextCrawler runs under Windows 98, ME, 2000, XP and Vista.

…is an Open-Source folder comparison and synchronization tool. It is optimized for highest performance and usability without restricted or overloaded UI interfaces

FreeFileSync has a simple yet attractive, with well made icons, interface that synchronizes folders and compares files and folders. The options to compare are based on file size and date and also the file contents. The help button to the right of the big rectangular compare button attempts to explain how the comparison is calculated in both the aforementioned possibilities or features.
The synchronization feature is more detailed and includes the possibility to copy files between folders so that they are identical or to copy files and overwriting any that already exist in the other folder or to even delete files that already exist in the other folder.

FreeFileSync is also capable of saving configurations to be loaded to make future uses even more automated. Batch files can also be saved to ease work for every use with identical folders. Files can also be filtered so that certain file types are not included in the syncing procedures. FreeFileSync is available both for Windows and Linux machines.