REDIPlus 11.1 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. This program was originally designed by Goldman Sachs.
The following versions: 11.1, 10.2 and 4.5 are the most frequently downloaded ones by the program users. 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 frequent installer filenames for the program are: Launcher.exe and REDIStart.exe etc. The program lies within Business Tools, more precisely Investment-Tools.
From the developer:
REDIPlus provides a single platform for seamless order routing of Equities, Futures and Options across the Americas, Europe and Asia. Portfolio Trader provides institutional traders with the workflow tools, analytics and global reach to execute portfolios of securities seamlessly across asset classes. You can trade single contracts and complex spreads in the Option Series window and more
You may want to check out more software, such as OpenQuant, CSI Unfair Advantage or Stock Spy, which might be similar to REDIPlus.