Download

ARDUINO ESP8266 Version 1.00

The open-source Arduino-ESP8266 Software makes it easy to write code and upload it to the ESP8266.

Downloading the software is simplified  by the Arduino. It is available from version 1.6.4.
Just follow the steps in getting started.

So you will not find any download anymore over here.
If thats disappoinging, you may have a look at https://github.com/esp8266/Arduino

 

Change list

1.00 July 2015 – Using the new boardmanager feature in Arduino 1.6.4
0.41 18 April 2015 – Blocked download link repaired. Now direct from the source. [Please check installation instructions on Getting started, need additional copy of libiconv-2.dll]
0.40 14 April 2015 – Full Arduino environment including, availability to upload, without reset/flash button 🙂
0.31 – 5 April 2015 – void* __dso_handle added to some examples to have it compiled.
0.30 – 4 April 2015 – Using RogerClarc Github as base. Based on .zip instead of setup.exe
0.21 – 1 April 2015 – Burn Bootloader repaired
0.20 – 30 March 2015 – Corrupt setup.exe replaced
0.20 – 29 March 2015 – Core replaced with esp8266.com/arduino created by Ivan Grokhotkov
0.12 – 26 March 2015 – Espressif SDK 0.9.5 replaced by Espressif SDK 1.00
0.11 – First release