Superlib 1.0 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The actual developer of the program is XCoolSoft LTD Co. China.
We recommend checking the downloaded files with any free antivirus. The following version: 1.0 is the most frequently downloaded one by the program users. The program belongs to Photo & Graphics Tools. The program's installer is commonly called superlibClient.exe.
From the developer:
SuperLib is a drawing & block library manager. It assists to build your own custom library to manage related DWG files and blocks. You can preview DWG files and blocks in library, and open or insert them into AutoCAD.
Key Features:
1. Build your custom library to manage related DWG files and blocks.
2. Search DWG files in your local machine and insert them into library.
3. Insert blocks on your current drawing into library.
You may want to check out more software, such as Plate 'n' Sheet Development Pro., CAD To DMC or TachyCAD, which might be similar to Superlib.