| ChangeReportInterface | ChangeReport interface. |
| DownloaderInterface | Downloader interface. |
| DvcsDownloaderInterface | DVCS Downloader interface. |
| VcsCapableDownloaderInterface | VCS Capable Downloader interface. |
| ArchiveDownloader | Base downloader for archives |
| DownloadManager | Downloaders manager. |
| FileDownloader | Base downloader for files |
| FilesystemException | Exception thrown when issues exist on local filesystem |
| FossilDownloader | |
| GitDownloader | |
| GzipDownloader | GZip archive downloader. |
| HgDownloader | |
| PathDownloader | Download a package from a local path. |
| PearPackageExtractor | Extractor for pear packages. |
| PerforceDownloader | |
| PharDownloader | Downloader for phar files |
| RarDownloader | RAR archive downloader. |
| SvnDownloader | |
| TarDownloader | Downloader for tar files: tar, tar.gz or tar.bz2 |
| TransportException | |
| VcsDownloader | |
| XzDownloader | Xz archive downloader. |
| ZipDownloader | Base downloader for archives |