Desktop Pivot Level and Support/Resistance Calculator

I need a sophisticated desktop software application that can calculate pivot levels, as well as support and resistance levels for intra-day trading.

Key Features:
- Real-time Data Analysis: The application should be able to analyze real-time market data.
- Historical Data Comparison: It should also be capable of comparing the current market data with historical data.
- Alert System: I would like the software to alert me when certain price levels are reached.

Data Retrieval:
The software should allow for manual input of both real-time and historical data.

Ideal Skills and Experience:
- Proven experience developing financial software
- Strong understanding of pivot levels and support/resistance calculations
- Proficiency in data analysis and comparison
- Excellent knowledge of desktop software development
- Knowledge of APIs is a plus