An excessive list of free services for open source projects

Comments are welcomed! Let's make our own list of free for open source services!

IMPORTANT. Like @dewey proposed - this will be in standalone GitHub repository. Pull requests welcome!

https://github.com/velikanov/opensource-candies

I mean like:

- - - - - Version Control - - - - -

BitBucket (https://bitbucket.org/) - free for open source and private repositories

GitHub (https://github.com/) - free for open source repositories, paid for private repositories

- - - - - Continuous Integration - - - - -

AppVeyor (http://www.appveyor.com/) - Continuous Integration for .NET

Coveralls (https://coveralls.io/) - Code Coverage History

Scrutinizer (https://scrutinizer-ci.com/)

Semaphore - (https://semaphoreapp.com/)

Travis CI (https://travis-ci.org/)

- - - - - Translating - - - - -

Crowdin (https://crowdin.com/) - need to request subscription

- - - - - Profiling - - - - -

YourKit (http://www.yourkit.com/) - Java Profiler

- - - - - E-mail Sending - - - - -

MailChimp (http://mailchimp.com/) - free for 12,000 emails to 2,000 subscribers