The Showdown

Zemaxvsdiffractsim

Why pay monthly fees for Zemax when you can self-host diffractsim for free? Let's look at the facts.

Zemax

The Expensive Option

  • Closed Source (Black box)
  • Expensive monthly fees per user
  • Data stored on their servers
WINNER

diffractsim

The Freedom Choice

  • 100% Open Source Code
  • Free forever (Self-hosted)
  • You own your data completely
Interactive Calculator

Calculate Your "SaaS Tax"

SaaS pricing is designed to scale with your success. See how much wealth transfers from your bank account to Zemax's shareholders.

10 people
150100200+
$

*Estimated standard pricing for Zemax. Adjust if needed.

Estimated Annual Waste
$1,440
Monthly Burn Rate$120
5-Year Projection$7,200
Cost with Self-Hosted$0
Start Saving Today

Calculations based on 10 users at $12/mo.

Detailed Breakdown

0
Ray tracing/Physical optics
Scalar diffraction (FFT)
1
ZPL/Proprietary API
Native Python
2
Built-in CAD viewer
Matplotlib integration