| [binutils](http://directory.fsf.org/project/binutils/) | binutils: GNU binary utilities |
| [bzip2](http://www.bzip.org/) | bzip2 is a freely available, patent free, high-quality data compressor. It typically compresses files to within 10% to 15% of the best available techniques (the PPM family of statistical compressors), whilst being around twice as fast at compression and six times faster at decompression. |
| [Coreutils](http://www.gnu.org/software/coreutils/) | The GNU Core Utilities are the basic file, shell and text manipulation utilities of the GNU operating system. These are the core utilities which are expected to exist on every operating system. |
| [cURL](http://curl.haxx.se) | libcurl is a free and easy-to-use client-side URL transfer library, supporting DICT, FILE, FTP, FTPS, Gopher, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, POP3, POP3S, RTMP, RTSP, SCP, SFTP, SMTP, SMTPS, Telnet and TFTP. libcurl supports SSL certificates, HTTP POST, HTTP PUT, FTP uploading, HTTP form based upload, proxies, cookies, user+password authentication (Basic, Digest, NTLM, Negotiate, Kerberos), file transfer resume, http proxy tunneling and more. |
| [DMTCP](http://dmtcp.sourceforge.net/index.html) | DMTCP (Distributed MultiThreaded Checkpointing) transparently checkpoints a single-host or distributed computation in user-space -- with no modifications to user code or to the O/S. |
| [duplicity](http://duplicity.nongnu.org/index.html) | Encrypted bandwidth-efficient backup using the rsync algorithm. |
