> For the complete documentation index, see [llms.txt](https://docs.blippar.com/blippbuilder-app-sdk/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.blippar.com/blippbuilder-app-sdk/getting-started/third-party-libraries.md). # Third Party Libraries {% content-ref url="/spaces/3UKy7VHRJWrNarYaMp13" %} [Blippar Documentation Centre](https://docs.blippar.com/blippar-documentation-centre/) {% endcontent-ref %} This section provide various details on third party libraries, license types, purpose and additional URLs utilised in the SDK release for iOS and Android platforms. These are divided into the following three categories: * [Both platforms](#both-platforms) * [iOS only](#ios-only) * [Android only](#android-only) ## Both Platforms
LibraryLicense TypePurposeURL
BoostBoost Software LicenseC++ Utility LibraryBoost
bzip2BSD Style LicenseOpen-source data compressor.bzip2
eigenMPL2Optimised 3d/matrix libraryeigen
freetypefreetype licenseFont renderingfreetype
giflibX-Consortium open sourceRendering GIFsgiflib
JavascriptCore

LGPL (Android)

Provided by OS in iOS.

Javascript interpreterJavascriptCore
id3v2lib2 Clause BSD LicenseMP3 metadata processingid3v2lib
libcurlMIT/X Derivate LicenseNetworking librarylibcurl
libiconvLGPLCharacter encoding/decodinglibiconv
libjpeg-turboBSD-Style LicenseOptimised JPEG decodinglibjpeg-turbo
libmodplugPublic Domain (see history)Audio systemlibmodplug
liboggBSD-Style LicenseOGG file decodinglibogg
libpngPNGPNG decodinglibpng
libtheoraBSD-Style LicenseAudio systemlibtheora
libtremoloBSD-Style LicenseAudio systemlibtremolo
libvorbisBSD-Style LicenseAudio systemlibvorbis
nanoflannBSD-Style LicenseFor building KD-Trees of datasets with different topologiesnanoflann
openal-softGNU Lesses General Public License v2.1Software implementation of the OpenAL 3D audio API.openal-soft
rapidjsonMITJSON parsing and generationrapidjson
zxing-cppApacheBarcode, QR code processingzxing-cpp
zlibzlibData compressionzlib
## iOS Only | Library | License Type | Purpose | URL | | :--------------------------------------------: | :----------------------------------------------------------------------------------------------------: | :------------------------------------------------: | :-------------------------------------------------------------------------------------------------------------------------------------------------------------: | | OAuth2Client | [BSD](https://github.com/nxtbgthng/OAuth2Client) | OAuth2 functionality | [OAuth2Client](< https://github.com/nxtbgthng/OAuth2Client>) | | MBProgressHUD | [MIT](https://github.com/jdg/MBProgressHUD/blob/master/LICENSE) | Progress indicator library | [MBProgressHUD](https://github.com/jdg/MBProgressHUD) | | MFMailComposeViewController+Block | [MIT](http://cocoadocs.org/docsets/iOSBlocks/1.0.1/) | Mail composer with blocks syntax | [MFMailComposeViewController+Block](https://github.com/BlocksKit/BlocksKit/blob/master/BlocksKit/MessageUI/MFMailComposeViewController%2BBlocksKit.h) | | Reachability | [Apple](https://developer.apple.com/library/archive/samplecode/Reachability/Listings/LICENSE_txt.html) | Network connectivity library | [Reachability](< https://developer.apple.com/library/content/samplecode/Reachability/Introduction/Intro.html>) | | UIAlertController+Blocks | [MIT](https://github.com/ryanmaxwell/UIAlertController-Blocks/blob/master/LICENSE) | Alert UIViewController block implementation | [UIAlertController+Blocks](< https://github.com/ryanmaxwell/UIAlertController-Blocks>) | | UIDocumentInteractionController+DelegateBlocks | [MIT](https://github.com/c-rack/protocolblocks) | UIDocumentInteractionController with blocks syntax | [UIDocumentInteractionController+DelegateBlocks](https://github.com/c-rack/protocolblocks/blob/master/UIKit/UIDocumentInteractionController%2BDelegateBlocks.h) | ## Android Only | Library | License Type | Purpose | URL | | :------------------------------------------------------------------------------------------: | :---------------------------------------------------------: | :-------------------------------------------------------------------------------------------------------------: | :-------------------------------------------------------------: | | Google Play Services along with support, Design Library, ExifInterface& Preference Libraries | [AOSP License](https://developer.android.com/studio/terms) | Google Play Services used for face tracking and location services. Others are used primarily for UI development | [Guide ](https://developers.google.com/android/guides/overview) | | Apache OLTU | [Apache License v2.0](https://oltu.apache.org/license.html) | Apache Java OAuth2 library | [Apache](https://oltu.apache.org/) |