Anyone know what tumblr is written in

Question

Does anyone know what tumblr is written in? I have been trying to figure it out.

Answer 1

Here's the full stack as of 2013.

"We're a LAMP based stack (Linux Apache MySQL PHP) with Scala for our many services. Other pieces of tech we use currently in production are Memcached, Varnish and Redis."

http://smcdermott.tumblr.com/post/46847264498/what-language-is-tumblr-written-in-all-php

Answer 2

It's PHP...

http://www.marco.org/55384019

spiteshow:

I wonder if the Tumblr guys are using a framework or if it is all home brew.

Both: it’s a homebrew framework to add MVC structure and a useful secondary function library to PHP 5 that we started in 2006 and have constantly evolved into a very finely tuned framework for our needs. The same framework runs some of Davidville’s former consulting-client sites as well as all of my personal sites and projects. It’s not available publicly anywhere, but we may release it in the future.

Answer 3

The lead developer's blog features a lot of PHP-related material, and Tumblr was advertising for PHP developers a while ago. This isn't strong evidence, but it's possibly indicative and it's the best I could find.

Answer 4

I just logged in to my account and added the index.php and it worked, so it must be php. http://www.tumblr.com/dashboard/index.php