Slack integrates with many third-party services and supports community-built integrations, including Google Drive, Trello, Dropbox, Box, Heroku, IBM Bluemix, Crashlytics, GitHub, Runscope, Zendesk[30][31] and Zapier.[32] In December 2015, Slack launched their software application ("app") directory, consisting of over 150 integrations that users can install.[33]