The 2.4 version of Container for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The actual developer of this Mac application is Studlar Software. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. The program lies within Productivity Tools, more precisely Clipboard Tools.
From the developer:
Container... Information at your fingertips. Container is a clipboard and scrapbook on steroids.
Copy-and-paste or drag-and-drop any information into it, pictures, source code, web pages, links, bookmarks, or any information that is handy to keep close. Then drag-and-drop from Container into any other application. Organize your clips into groups, save pictures, and texts. Full unicode character support, now with printing support
You may want to check out more Mac applications, such as iPasteboard, AutoClips or MayaMaya, which might be related to Container.