You can download T-RackS Standard 3.1.2 from our software library for free. The actual developer of the software is IK Multimedia. The most popular version among T-RackS Standard users is 3.1. The software is included in Multimedia Tools.
From the developer:
The new T-RackS 3 raises the bar again in high-end DAW mastering and mixing, with a suite of 4 Dynamics/EQ processors, full metering suite, an audio quality that is unmatched in software, and scores of new and unique features.
You may want to check out more software, such as Tracker Software PDF Xchange V100, PDF-XChange Standard or Tracker Software PDF-XChange Professional, which might be similar to T-RackS Standard.