Free file duplicates software for windows

Duplicates is a command line tool for finding duplicate and zero-byte files on your hard drive Duplicates is a little command line application developed to find duplicates and zero-byte files on your HDD. This tool is currently in beta.
System requirements:
- The .NET Framework (Mono has not been tested)
- Any version of Windows that supports .NET

Find Duplicate Files (Java) 3.0 is an advanced and easy to use program which is designed specially to give you a professional way to find duplicate files.

Major Features:

1. When collecting a large number of files of any kind, there will be duplicates with the same file under two different names or in more than one place. FindDupFiles is a Java application to find duplicate files by searching for files that have the same size and the same MD5 checksum.
2. It won't find files that are merely similar, such as two consecutive photos of the same subject, or two MP3 songs encoded at different times.
3. Possible duplicates are reported to the user, who can then verify that the files are identical, either by inspection or by doing a byte-by-byte comparison with the "comp" command in DOS/Windows or the "cmp" command in UNIX.
4. What to do with files is the user's choice; the program does nothing except report the duplicates.
5. The probability of two different files having the same size and MD5 checksum is extremely small.

WareSeeker Editor

Remove Duplicates 1.1.1 is a professional and smart application which will remove duplicate e-mail addresses on your list. No installation required, no database, and no installer. You have 2 lists and you want to remove the e-mail addresses from the first list if these addresses appear in the second list. This is all you need!

Enhancements: Version 1.1.1 includes unspecified updates.

Easy Duplicate Finder 2.2.4 is known as a free and easy-to-use utility which supports you to find and delete duplicate files. What hard disk space on your PC is occupied by duplicate files? Easy Duplicate Finder will show you.

Major Features:

1. Search for true duplicates (files with same contents);
2. Powerful search engine with fast files check;
3. Full binary (byte-by-byte) comparison;
4. Flexible Scan settings;
5. Convenient user interface;
6. Advanced Duplicate file management - remove only unnecessary duplicates;
7. Full Unicode support;
8. Export list of duplicates to HTML, TXT.

Thunderbird extension that will search and remove duplicate messages from your folders If you have duplicate messages (e.g. from merging folders or downloading messages several times) you can use Remove Duplicate Messages in order to find and remove them from the selected folderand its subfolder by rightclicking on a folder and choosing "Remove Duplicate Messages".
It allows you to configure what you want to compare (sender, messageid, subject, ...).
Main features:
- Also checks subfolders
- View found messages in main view
- Option to make manual changes to the messages to be deleted.
- Supported Languages: en-US, de-DE, de-CH, de-LI, de-LU, de-CH, it-IT, es-ES, fr-FR, nl-NL
- Easy to use and fast (1000 messages per second).
- Automatic delete (no dialog showing the duplicates)
- Prefere to keep the bigger, smaller, unread or first/last found Message.
System requirements:
- Thunderbird: 1.0 ? 1.5.0.*