# 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

Library	License Type	Purpose	URL
Boost	Boost Software License	C++ Utility Library	Boost
bzip2	BSD Style License	Open-source data compressor.	bzip2
eigen	MPL2	Optimised 3d/matrix library	eigen
freetype	freetype license	Font rendering	freetype
giflib	X-Consortium open source	Rendering GIFs	giflib
JavascriptCore	LGPL (Android) Provided by OS in iOS.	Javascript interpreter	JavascriptCore
id3v2lib	2 Clause BSD License	MP3 metadata processing	id3v2lib
libcurl	MIT/X Derivate License	Networking library	libcurl
libiconv	LGPL	Character encoding/decoding	libiconv
libjpeg-turbo	BSD-Style License	Optimised JPEG decoding	libjpeg-turbo
libmodplug	Public Domain (see history)	Audio system	libmodplug
libogg	BSD-Style License	OGG file decoding	libogg
libpng	PNG	PNG decoding	libpng
libtheora	BSD-Style License	Audio system	libtheora
libtremolo	BSD-Style License	Audio system	libtremolo
libvorbis	BSD-Style License	Audio system	libvorbis
nanoflann	BSD-Style License	For building KD-Trees of datasets with different topologies	nanoflann
openal-soft	GNU Lesses General Public License v2.1	Software implementation of the OpenAL 3D audio API.	openal-soft
rapidjson	MIT	JSON parsing and generation	rapidjson
zxing-cpp	Apache	Barcode, QR code processing	zxing-cpp
zlib	zlib	Data compression	zlib

## 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/) | --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.blippar.com/blippbuilder-app-sdk/getting-started/third-party-libraries.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.