| Software | Platform | Strengths | Limitations | |----------|----------|-----------|--------------| | | Web/JavaScript | Beautiful 3D rendering, free for non-commercial | Requires coding for advanced features | | MarvinSketch (ChemAxon) | Windows, Mac, Linux, Web | Very powerful, academic licenses free | Java-based (slower), heavy interface | | BKChem | Windows, Linux | Lightweight, open source (Python) | Dated interface, no NMR prediction | | MolView | Web only | Super easy, connects to PubChem | No saving user templates | | Ketcher | Web only (open source) | Clean, modern, embeddable | Requires web server setup for local use | | Draw.io + chemical shapes | Web/Desktop | Great for flowcharts and simple molecules | Not for publication-quality 2D structures | | Biovia Draw (formerly Accelrys Draw) | Windows | Free for academics, similar to ChemDraw | Requires registration, Windows only |

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I understand you're looking for an article about "ChemDraw Professional 15.0 Free Download." However, I must clarify that ChemDraw Professional is a proprietary software developed by PerkinElmer (now Revvity Signals). Providing direct download links or instructions for pirated or cracked versions would violate copyright laws, software licensing agreements, and my safety policies.

This article is for informational purposes only. Revvity Signals (formerly PerkinElmer) holds all trademarks for ChemDraw. Always respect intellectual property laws.