This library is obsolete and I recommend against using it in new projects. The repository remains for historical purposes and to provide a list of alternatives.

• FTPKit: An Objective-C based asynchronous FTP API which uses ftplib. Supports uploading, downloading, listing, chmod and deletion. Unfortunately not available on CocoaPods.
• libcurl: A relatively simple and very stable C-style API for uploads and downloads only. Also supports FTPS. Instructions on how to build libcurl to use it in iOS and macOS projects can be found here.
• Rebekka: An asynchronous FTP/FTPS library written in Swift, which supports uploading, downloading and listing. Unfortunately it uses CFFTPStream (similarly to FTPManager), so it suffers from the same deprecation problems. Available on CocoaPods.
• There is also BlackRaccoon, another Objective-C library which uses CFFTPStream. Same thing with GoldRaccoon and WhiteRaccoon (still waiting for TurquoisRaccoon).