Using the link below, you can download the latest version of Magento 1.9.x
https://magento.com/tech-resources/download
On this page, you can find both the latest version of 1.9.x and Magento 2.x.x
Magento 2 on github.com :
https://github.com/magento/magento2
magento 2 in Dutch / dutch language pack