Tools

Interactive tools that you can use for free. These tools are provided "as is" without any warranty or guarantee of accuracy. Use them at your own discretion. If you would like to support me in the creation and maintenance of these tools, you can [buy me a coffee](https://www.buymeacoffee.com/carlolepelaars).

Web Checker

Dec 03

This tool gives you general information, WHOIS, SSL and DNS records for any web domain. These are all public records that web browsers use to route requests and verify its authenticity. A fun book recommendation on the history of the internet and domain names is [The Domain Game by David Kesmodel](https://amzn.to/3CKZoKD).
Web Checker

Black-Scholes

Dec 02

This app calculates the option price and Greeks up to the 3rd order according to the Black-Scholes model. Under the hood it is using my [blackscholes](https://github.com/CarloLepelaars/blackscholes) open source Python library. To learn more about the implementation and formulas, check out the [full documentation](https://carlolepelaars.github.io/blackscholes/3.the_greeks_blackscholes/). If you are serious about studying option theory check out [Paul Wilmott on Quantitative Finance](https://amzn.to/49hU8KY) and [Nassim Taleb's Dynamic Hedging](https://amzn.to/4fNdDgL).
Black-Scholes