CHCSVParser
An awesome Objective-C library for parsing and creating CSV (Comma Separated Values) files that can be imported into Numbers and Excel.

Mantle
This library serializes and deserializes NSObject instances to JSON and reverse. We use that to create model instances from cloud based JSON responses.

AFNetworking
An important library for all cloud based requests.

XMLDictionary
This library is very important for Copper as it is the foundation of parsing the EAGLE files that are XML files we need to parse.

VectorBoolean
This library has been originally been developed in Objective-C by Andy Finnell. In Copper we use the Swift port by Leslie Titze.

SSZipArchive
We use this simple to use library to unzip files downloaded from the web and to zip files for sharing them.

GlyuckDataGrid
It would have taken many days or weeks to build this grid we need to display the BOM in a spreadsheet like design. It's been a matter of minutes to implement using this awesome class.

FTIndicator
Sometimes we need to display app progress by displaying an activity icon. This library provides just that - but very good and reliable.

ObjectiveDropboxOfficial
This is the official Dropbox SDK we use for the authoring process.

TJDropbox
The official SDK does not really help with UI. This library provides easy to use methods to query folder structures in the currently connected Dropbox. We use them for importing files from Dropbox.

NKOColorPickerView
iOS does not come with a color picker control. Instead of building our own we chose this awesome component.

iOS-MagnifyingGlass
We had to fix a small issue in this library to speed up performance. As we are unsure wether this only fixes issues in our special case we did not create a pull request yet. If you are interested in our changes, please have a look at our own fork here.