diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,19 +1,19 @@
-The Contiki Operating System
-============================
+Contiki OS for 6502 based computers is available for four target systems. **Select one of the following links for more information on download and usage** (or learn more on the [history](https://github.com/oliverschmidt/contiki/wiki/History) of Contiki OS):
+- The [C64](https://github.com/oliverschmidt/contiki/wiki/C64)
+- The [C128 VDC](https://github.com/oliverschmidt/contiki/wiki/C128)
+- The [enhanced Apple //e](https://github.com/oliverschmidt/contiki/wiki/Apple-II)
+- The [ATARI XL](https://github.com/oliverschmidt/contiki/wiki/ATARI)
 
-[![Build Status](https://travis-ci.org/contiki-os/contiki.svg?branch=master)](https://travis-ci.org/contiki-os/contiki/branches)
+Contiki requires Ethernet hardware. There's no support for TCP/IP over serial connections whatsoever in the standard build. There's experimental support for SLIP instead of Ethernet when building with the environment variable `SLIP` defined.
 
-Contiki is an open source operating system that runs on tiny low-power
-microcontrollers and makes it possible to develop applications that
-make efficient use of the hardware while providing standardized
-low-power wireless communication for a range of hardware platforms.
+On the C64 and the C128 there are two supported Ethernet carts:
+- The [RR-Net](http://wiki.icomp.de/wiki/RR-Net) - emulated by [VICE](http://vice-emu.sourceforge.net/)
+- The [ETH64](https://www.ide64.org/eth64.html)
 
-Contiki is used in numerous commercial and non-commercial systems,
-such as city sound monitoring, street lights, networked electrical
-power meters, industrial monitoring, radiation monitoring,
-construction site monitoring, alarm systems, remote house monitoring,
-and so on.
+On the Apple //e there are three supported Ethernet cards:
+- The [Uthernet](https://web.archive.org/web/20150323031638/http://a2retrosystems.com/products.htm) - emulated by [AppleWin](https://github.com/AppleWin/AppleWin) and [GSport](https://david-schmidt.github.io/gsport/)
+- The [LANceGS](https://web.archive.org/web/20010331001718/http://lancegs.a2central.com:80/)
+- The [Uthernet II](http://a2retrosystems.com/products.htm)
 
-For more information, see the Contiki website:
-
-[http://contiki-os.org](http://contiki-os.org)
+On the ATARI XL there is one supported Ethernet cart:
+- The [Dragon Cart](https://www.atari8ethernet.com/) - emulated by [Altirra](http://www.virtualdub.org/altirra.html)