Free leak detection software for mac

Leaks is a tool to parse and visualize the output from the "leaks" command line utility.
The reporting done by the leaks command line utility is fantastic, as is the memory management event history of ObjectAlloc. If you use them together, you have a very powerful tool for finding memory leaks in Cocoa applications. Manually piecing together the data provided by these tools is of course often both time consuming and tedious.
The goal is to make this easier by providing a tool that combines the reports from the leaks command line utility with object memory management event history and user interface and data mining abilities reminiscent of Shark.
As this is a project run in my spare time, its quite possible that I will not reach that goal...
That said, the functionality implemented so far is already useful on its own.
Main features:
- Open leak reports from file
- (via double-click if they have a ".leaks" file name suffix)
- Open leak reports from pasteboard, or via the Leaks system service menu item
- View merged callstack for all leaks in the report
- View callstack as bottom-up, or top-down
- Save preferred window layout and settings.
Enhancements:
- Fixed horizontal scrollbars in the callstack table views.
- Fixed synchronized selection between callstack table views.
- Added User Guide and Quick Start Guide.
- Will now remember selection when switching between bottom-up, or top-down.

Apache Protect is a GUI utility that lets you configure and set up the built-in basic authentication capabilites of Apache - the web-server that comes pre-installed with Mac OS X.
With this app you can easily set up userfiles, and protect directories with a username and password.
Doing all of this manually can both be time-consuming and confusing to the regular end user, since it often involves fiddling in the terminal and using "those pesky unix commands".
This tool is just simply meant to make the whole process easier with a sleak aqua interface.
Basically it just edits two files, the password file which contains all the usernames and passwords, and the configuration file which contains data for protection a directory.
Enhancements:
- Added a new operation mode: saving into a configuration file
- Added support for group files
- Added support for access control settings (hostname/ip)
- Added options for changing the accessfilename and configuration file path
- Minor bug and memory leak fixes.

Requirements:
MacOS 8.5

Requirements: Mac OS X 10.4 or later, iTunes 7.6 or later.

Labrador is a Host-based Intrusion Detection System (HIDS) and Integrity Checker written entirely in Perl.
Labrador aims to be a complete, free, multiplatform, and open-source solution for detecting modifications and tamperings in files.
Labrador (also known as Labrador Intrusion Detection or labrador-ids) is an open source cross-platform tool created to identify any unwanted modifications made in your system.
Labrador can be used as an integrity checker and as a host based intrusion detection system (IDS).
Labrador is known to work in the following platforms:
- Mac OS X
- Linux (kernel 2.4/2.6)
- OpenBSD
- Microsoft Windows (9x/NT/2K/XP)