Download of KeychainCheck2 5.0 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The application lies within System Tools, more precisely System Optimization. This free software for Mac OS X was originally created by Eclecticlight. We recommend checking the downloaded files with any free antivirus.
From the developer:
KeychainCheck2 is an application that lets you check your keychains with ease. In some circumstances, it can even tell you when your keychains are being accessed. It does that by getting an extract from the unified log. The displayed buttons reflect the locking state of the login keychain.
You may want to check out more Mac applications, such as TransparentDock or DiskFire, which might be similar to KeychainCheck2.