There are many reasons for using such services, most often either elementary forgetfulness or hacking.
At one time I needed to sort out a couple of hashes, searched the Internet and on the forums, found a bunch of services for this, which I want to share.
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Instant transcript
www.tmto.orgwww.xmd5.org/index_en.htmmd5.benramsey.comwww.md5decrypter.comwww.cmd5.comwww.md5encryption.comwww.thepanicroom.org/index.php?view=crackerwww.panpan.org/2006/md5asp/HOME.ASPwww.bisix.tkmd5pass.infohash.insidepro.com/index.php?lang=rusThe latter is the site of the PasswordsPro password search software, a fairly large database, easy to use.
NOT instant decryption
rainbowtables.net - need to contact the administration by e-mail
milw0rm.com/cracker/insert.phpwww.hashchecker.com/?_sls=add_hash - quota 3
hashes per day
Paid services
passcracking.comVery good service, large databases, after registration a search is made on all available. Also there is a paid brute force service, payment via SMS.
hashcracking.infoIn my personal opinion, this is the best and deserves special attention.
Besides the fact that he searches for passwords in the database (instant decryption), he adds those not found to the special queue of passwords. Brutter installed on the server moves in the queue from the top down.
(Only 12 tables. CharSet = az, 0-9 password length: 1-8 characters. Probability of hit: 97.80%. Maximum password search time for one hash: 12 minutes)
If you want the password to be moved as soon as possible, then you can specify the price for it. The queue is sorted by price. The balance can be replenished by writing to the administration and transferring money, for example, via WebMoney.
But there is one interesting feature. In addition to the main brutter, all users of the service can participate in the search, for this there is a special page where all the hashes are displayed, sorted by price. If the brutter could not find the password, and one of the users succeeded in this, then the amount for the found password passes to that user.
Supports MD5, MySQL, MySQL5, SHA-1
PS As it is written on all services: “Cracking other people's passwords is bad”;)