what software was facebook developed in
Whilst Facebook provides official SDKs for iOS, Android, Unity, JavaScript and PHP, there are a wide range of unofficial, third-party SDKs for a range of other languages and frameworks built by amazing communities of active developers. Inclusion in this list is not an endorsement or recommendation by Facebook. In addition, such inclusion is not intended to imply, directly or indirectly, that these organizations endorse or have any affiliation with Facebook. Feedback and bugs should be directed to their representative authors.