Off Leash Developments, makers of FileLock

FileLock
File encryption, the Mac way

FileLock is an application for locking and securing your files using a powerful encryption algorithm. It is password-based, meaning you enter a password to lock your files and then later enter that same password to unlock them.

Once your files have been encrypted into a locked file, you can do anything with it - email, send over IM/Skype, backup, upload, etc... Our locked format is entirely portable and can be easily opened by any copy of FileLock on any computer (provided the correct password is entered, of course).

Technical details:

448-bit Blowfish encryption
Threaded internals for excellent efficiency
Architecture independent file format (Intel and PowerPC)
Limitless in terms of maximum file size or amount of data
Built on the trusted and proven OpenSSL library bundled with OS X (More info)

Trial information:

14 day fully-featured trial
When the trial has expired FileLock will not allow you to lock new files, but will always allow files to be unlocked. We never take away your ability to decrypt existing locked files.

Why use FileLock?

	Secure your data
	We use one of the strongest encryption methods ever created, 448-bit Blowfish.

	Finder integration
	The FileLock Finder plug-in provides quick locking and unlocking.

	Drag and drop interface
	Intuitively easy to use interface based on dragging and dropping files.

	Portability
	You can backup, upload, and send locked files without a problem.

	Verification
	We are very cautious about data loss, so we verify after encrypting to prevent it.

	Password Assistant
	Generate mathematically uncrackable passwords because your data is worth it.

	Secure deletion
	Remove all traces of your sensitive files after locking using UNIX-powered file shredding.

	Text Locker
	Encrypt and decrypt plain text to send secret messages around!

	Sparkle Integration
	Keep FileLock up to date. (More info)

	Growl Integration
	Receive notifications of finished operations. (More info)