Downloading QC-CALC SPC 3.3 from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this software available.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The most popular versions among the software users are 3.4, 3.3 and 3.2. The common filename for the program's installer is QCCalc32.exe. This tool was originally produced by Prolink Inc. The software is included in Internet & Network Tools.
From the developer:
QC-CALC SPC is a complete SPC package that analyzes the data collected by QC-CALC Real-Time. Use QC-CALC SPC’s charts and reports to constantly monitor your process and keep it in control.
QC-CALC SPC offers a wide variety of charts and functions to aid your analysis and give you the power to make on-the-spot decisions. In seconds, QC-CALC SPC gives you a precise picture of how your production line is performing with easy-to-use menus.
You may want to check out more software, such as Quincunx SPC Simulator DEMO, XLSTAT-SPC or SPC for MS Excel, which might be similar to QC-CALC SPC.