Did your computer ever infected by some new Viruses, Trojans or other threats even you had installed an Anti-Virus program? Did you have no idea which installation files are "good" and which are "bad" when you rebuild your system after a big Viruses explosion? Did you know even the files are disinfected, they are still permanently modified? (For example, the virus codes are removed, but blanks are left. They probably can't be executed properly after disinfected.)

Why should I use Md5Checker?
· To verify the integrity of downloaded files: With Md5Checker, user can calculate MD5 checksum of downloaded files and compare them with provided when downloading via HTTP, FTP, P2P, etc.
· To detect unknown viruses: Only-for-existing-viruses DB based anti-virus programs can rarely detect all emerged new (i.e. not in the DB) viruses in time. As a supplement, Md5Checker checks whether files are original. By that user can detect any change of file including virus infection.
· To make sure that the installation files are secure: System will be re-infected by viruses time and again while reinstalling software if the installation file had been infected. To avoid this, Md5Checker user can calculate and save the MD5 checksum right after downloaded/copied installation files, i.e. make sure these files are original (This step can be skipped if there are MD5 checksum downloaded/copied along with these files), and verify these files again upon using them.
· To make sure that files in a removable storage device are secure: In order to avoid bringing in viruses from using the removable storage device, Md5Checker user can calculate, save MD5 checksum in advance and verify files afterwards in the device. It is also a good idea to copy Md5Checker into the device to be able to check files anywhere and anytime. Note: Don't forget to check the copied Md5Checker.
· To check out the security status of the system: It will indicate that the system was infected if the MD5 checksum of one executable file was changed without any action.
· To find out the virus source: It will indicate that one executable file is the virus source if the MD5 checksum of other several executable files have changed unexpectedly after executed this file.
· To calculate MD5 checksum for publishing: File distributors and software authors can use Md5Checker to calculate MD5 checksum of their files and publish them on the website.


Here are some key features of "Md5Checker Publisher Md5Checker":

· Convenient to add files
Can add files via Add command, drag-and-drop or command line.

· Enhanced Open File dialog
Can add folders and set corresponding options using this dialog.

· Options for adding folders
Can set to include which types of files, exclude which types of files, and whether recurse sub-folders or not.

· Multi-threading
Can do any operations while checking. For example, adding files, removing md5 items [1], sorting, etc.

· Full management of saved md5 items in .md5 files
Can update, delete saved md5 items in .md5 files conveniently.

· Two ways to save
Can save md5 items per folders silently; Or use Save File dialog to save them to one .md5 file.

· Categorized views
Can view all md5 items or view one category of md5 items.

· Three types of copy commands
Can copy md5 items into the format you need.

· System integration
Has options to: Associate with .md5 files; Create program groups shortcut.

· Integrated Shell commands
Provides two Shell commands: Locate and Properties, to be convenient to locate files and view their properties in Explorer.

· MD5 Calculator dialog
Provides an MD5 Calculator dialog to calculate the MD5 hash of specified text.

What's New in This Release: [ read full changelog ]

· New: Check new md5 items only option
· New: Check new files in Md5Checker Shell context menu item
· New: Be able to recognize and skip comments in an MD5 file
· New: Displays last opened folder/last opened/saved MD5 file in the title bar
· New: Save Options dialog
· New: Save | Md5 item delimiter options
· New: Save | Line feed options
· New: Save | Path delimiter options
· New: Save | Save To | Always save full path option
· New: Hand cursor for Hyper Link control
· Improve: New wildcards matching algorithm - Adding large folder is about three times faster
· Please update *.* to * if you have such settings of previous versions. *.* only matches files which name contains dot explicitly, i.e., has extension name.
· Improve: Be able to read MD5 files in various formats, including leading spaces, various comment delimiters, leading zeros omitted from MD5 checksums and various md5 item delimiters
· Fix: Count of checked items in the status bar is incorrect if there are md5 items in the Loaded category
· Fix: Progress bar should be reset to 0 when shows up
· Update: Load all MD5 files by default while adding folders
· If you do not want to check those loaded md5 items, use the Check new md5 items only option when add folders.
· Update: Default values of Add | Add folders | Include option
· Update: Start, Stop and Locate toolbar button icon
· Update: Default window size
· Minor changes