Comment from GMPFashion, posted on GitHub Jan 15, 2016
I have the very same issue. Magento Connect is not on the System > Extensions menu.
Comment from xcomSteveJohnson, posted on GitHub Jan 18, 2016
There is no Magento Connect Manager in 2.0; it's replaced by the [Component Manager and System Upgrade[(http://devdocs.magento.com/guides/v2.0/comp-mgr/bk-compman-upgrade-guide.html) utilities.
To run it, go to System > Web Setup Wizard. Let us know if this solves the issue.
Comment from cymbalrare, posted on GitHub Jan 19, 2016
thanks Steve, But I have tried to install new extension, I think I will see new purchase in component manager , but nothing happened and all extension support upto Magento 1.9.2 , Is there any help how to install a extension from marketplace
Comment from xcomSteveJohnson, posted on GitHub Jan 22, 2016
@cymbalrare I believe we're working on a communication about this now. See if this works for you and let us know.
Comment from cymbalrare, posted on GitHub Jan 26, 2016
hi xcomSteveJohnson , Thank you... But when I try as mentioned in your link , I get this error.
For example I try to install this
composer require ASchroder/SMTPPro:2.0.7
Only success I get with this composer require ashsmith/magento2-controller-module:2.0.*
Is there any way to install module extension which is compatible for 1.92 , because I found no where magento 2 module or extension only few in https://www.magentocommerce.com/magento-connect/magento-2
Comment from tanya-soroka, posted on GitHub Apr 18, 2016
Hello, for the purchasing and installation extensions, please use https://marketplace.magento.com/. if you want to submit the extension, please send email to firstname.lastname@example.org and team will be able to send you instruction.