Update README.md

README.md

@@ -276,7 +276,7 @@ Software applications that will help you hack your car, investigate it's signals
 - [UDSim](https://github.com/zombieCraig/UDSim/) - GUI tool that can monitor a CAN bus and automatically learn the devices attached to it by watching communications.
 - [RomRaider](http://www.romraider.com/) - An open source tuning suite for the Subaru engine control unit that lets you view and log data and tune the ECU.
 - [Intrepid Tools](http://store.intrepidcs.com/) - Expensive, but extremely versatile tools specifically designed for reversing CAN and other vehicle communication protocols.
-- [O2OO](https://www.vanheusden.com/O2OO/) - Works with the ELM327 to record data to a SQLite database for graphing purposes. It also supports reading GPS data. You can connect this to your car and have it map out using Google Maps KML data where you drive.
+- [O2OO](http://web.archive.org/web/20201108091723/https://www.vanheusden.com/O2OO/) - Works with the ELM327 to record data to a SQLite database for graphing purposes. It also supports reading GPS data. You can connect this to your car and have it map out using Google Maps KML data where you drive.
 - [CANToolz](https://github.com/eik00d/CANToolz) - CANToolz is a framework for analysing CAN networks and devices. It is based on several modules which can be assembled in a pipeline.
 - [BUSMASTER](https://rbei-etas.github.io/busmaster/) -An Open Source tool to simulate, analyze and test data bus systems such as CAN, LIN, FlexRay.
 - [OpenXC](http://openxcplatform.com/getting-started/index.html) - Currently, OpenXC works with `Python` and `Android`, with libraries provided to get started.