| ADMfzap | connect() and bind() wrapper to evade packet filtering | |
| ADMsmb | Samba security scanner | |
| ADMsnmp | SNMP audit scanner | |
| aescrypt | encrypt/decrypt using Rijndael encryption algorithm | |
| aide | Advanced Intrusion Detection Environment | |
| aircrack-ng | '802.11 WEP and WPA-PSK keys cracking program' | |
| amap | next generation scanning tool | |
| antisniff | promiscuous mode interface detector | |
| apg | automated password generator | |
| arirang | powerful webserver security scanner | |
| bfbtester | brute force binary tester | |
| bounix | Back Orifice Unix client by the cDc | |
| bsd-airtools | wireless auditing suite | |
| bunny | general-purpose protocol-blind fuzzer for C programs | |
| ccrypt | encrypt and decrypt AES files and streams | |
| cfs | cryptographic file system (user-space NFS server) | |
| cgichk | scans webservers for vulnerable CGI programs | |
| chrootuid | control chroot and su access rights by application | |
| clamav | virus scanner | |
| clusterssh | secure concurrent multi-server terminal control | |
| cops | system secureness checker | |
| corkscrew | HTTP tunneling utility for SSH | |
| crack | sensible unix password cracker | |
| cracklib | sensible unix password cracker | |
| crank | classical cipher cryptanalysis toolkit | |
| cryptcat | netcat enhanced with twofish encryption | |
| cryptokit | cryptographic framework for the Objective-ML language | |
| ctunnel | provide cryptographic tunnel | |
| cyrus-sasl2 | RFC 2222 SASL (Simple Authentication and Security Layer) | |
| dante | SOCKS client and server | |
| despoof | command-line anti-spoofing detection utility | |
| dsniff | sniffing tools for penetration testing | |
| fcrackzip | ZIP password cracker | |
| fragroute | intercept, modify, and rewrite egress traffic | |
| fragrouter | tool for testing network IDS implementations | |
| fwbuilder | firewall GUI | |
| gnupg | GNU privacy guard - a free PGP replacement | |
| gnutls | GNU Transport Layer Security library | |
| gpa | graphical interface for GnuPG | |
| gpgme | GnuPG Made Easy | |
| gringotts | GTK+2 secure notes manager | |
| hatchet | PF firewall log analysis | |
| hlfl | high level firewall language | |
| hs-crypto | Haskell cryptographic library | |
| hydra | parallelized login hacker | |
| integrit | file integrity checker | |
| ipguard | protect LAN IP adress space by ARP spoofing | |
| isic | IP stack integrity checker | |
| its4 | scan C/C++ source code for security problems | |
| john | extremely fast password cracker | |
| kedpm | application for managing passwords | |
| keychain | front-end to ssh-agent | |
| klaxon | small service wedge to do ident lookup on connecting party | |
| l0phtcrack | Microsoft LANMAN & NT password sniffer/cracker | |
| libfprint | library for fingerprint reader devices | |
| libfwbuilder | libraries for fwbuilder | |
| libgcrypt | crypto library based on code used in GnuPG | |
| libgpg-error | error codes for GnuPG related software | |
| libgringotts | encryption backend | |
| libident | library to interface the ident protocol server (rfc1413) | |
| libmcrypt | interface to access block/stream encryption algorithms | |
| libnipper | library for nipper | |
| libotr | The portable OTR Messaging Library and toolkit | |
| libssh2 | library implementing the SSH2 protocol | |
| libtasn1 | Abstract Syntax Notation One structure parser library | |
| logsentry | logfile auditing tool | |
| logsurfer | processes logfiles and perform certain actions | |
| luacrypto | Lua binding for the OpenSSL crypto libraries | |
| luasec | lua binding to OpenSSL to provide TLS/SSL communication | |
| lxnb | NetBus client | |
| mcrypt | extendable encryption program that supports many ciphers | |
| mhash | strong hash library | |
| nbaudit | NetBIOS Auditing Tool / Security Kit | |
| nfsshell | NFS auditing tool | |
| nikto | Web and CGI vulnerability scanner with SSL support | |
| nipper | audit network device configuration | |
| nss | libraries to support development of security-enabled apps | |
| onesixtyone | efficient SNMP scanner | |
| opencdk | Open Crypto Development Kit | |
| openct | drivers for several smart card readers | |
| opensc | set of libraries and utilities to access smart cards | |
| ophcrack | password cracker based on rainbow tables | |
| otpcalc | OTP and S/Key calculator for X | |
| outguess | universal steganography tool | |
| p0f | passive OS fingerprinting tool | |
| p5-Authen-Htpasswd | read and modify Apache .htpasswd files | |
| p5-Authen-Krb5-Simple | Perl module to authenticate against a Kerberos server | |
| p5-Authen-Radius | Perl module to authenticate against a RADIUS server | |
| p5-Authen-SASL | perl interface to the SASL auth framework | |
| p5-Catalyst-Authentication-Store-DBI | storage class for Catalyst Authentication using DBI | |
| p5-Catalyst-Authentication-Store-DBIx-Class | storage class for Catalyst Authentication using DBIx::Class | |
| p5-Catalyst-Plugin-Authentication | Catalyst authentication framework | |
| p5-Catalyst-Plugin-Authentication-Store-DBIC | CDBI Authentication for Catalyst | |
| p5-Catalyst-Plugin-Authentication-Store-Htpasswd | catalyst authentication via .htpasswd | |
| p5-Catalyst-Plugin-Authorization-ACL | ACL support for Catalyst applications | |
| p5-Catalyst-Plugin-Authorization-Roles | role based authorization for Catalyst | |
| p5-Crypt-Blowfish | interface to the Blowfish encryption algorithm | |
| p5-Crypt-Blowfish_PP | Blowfish encryption implemented pure Perl | |
| p5-Crypt-CBC | cryptographic cipher block chaining mode | |
| p5-Crypt-CipherSaber | cryptographic CipherSaber encryption | |
| p5-Crypt-DES | interface to the DES encryption algorithm | |
| p5-Crypt-DES-EDE3 | Triple-DES EDE encryption/decryption | |
| p5-Crypt-DH | Diffie-Hellman key exchange system | |
| p5-Crypt-DSA | DSA Signatures and Key Generation | |
| p5-Crypt-GpgME | Perl interface to gpgme | |
| p5-Crypt-OpenSSL-Bignum | OpenSSL's multiprecision integer arithmetic | |
| p5-Crypt-OpenSSL-DSA | implements DSA using OpenSSL | |
| p5-Crypt-OpenSSL-Random | routines for accessing the OpenSSL prng | |
| p5-Crypt-OpenSSL-RSA | RSA encoding and decoding using OpenSSL | |
| p5-Crypt-PasswdMD5 | md5-based passwords in perl | |
| p5-Crypt-Primes | provable prime number generator | |
| p5-Crypt-Random | cryptographically secure random number generator | |
| p5-Crypt-RC4 | implementation of the RC4 encryption algorithm | |
| p5-Crypt-Rijndael | interface to the rijndael encryption algorithm aka AES | |
| p5-Crypt-RSA | RSA public-key cryptosystem | |
| p5-Crypt-SaltedHash | object oriented interface to create salted hashes | |
| p5-Crypt-Serpent | interface to the Serpent encryption algorithm | |
| p5-Crypt-SmbHash | Perl module implementing lanman and nt md4 hash functions | |
| p5-Crypt-SSLeay | library to provide LWP https support via OpenSSL | |
| p5-Crypt-TripleDES | implementation of 3DES encryption on ECB mode | |
| p5-Crypt-Twofish | module to implement the Twofish cipher | |
| p5-Digest-BubbleBabble | module to bubble-babble fingerprints | |
| p5-Digest-HMAC | interface to HMAC Message-Digest Algorithms | |
| p5-Digest-MD2 | perl interface to the MD2 Algorithm | |
| p5-Digest-MD4 | interface to md4 message-digest algorithm | |
| p5-Digest-MD5-M4p | perl interface to a variant of the MD5 algorithm | |
| p5-Digest-Nilsimsa | module to calculate Nilsimsa digests | |
| p5-Digest-SHA1 | module to calculate SHA1 digests | |
| p5-Digest-Skein | interface to the Skein digest algorithm | |
| p5-GnuPG | perl5 interface to GnuPG | |
| p5-GnuPG-Interface | perl5 interface to GnuPG | |
| p5-GPG | perl5 interface to GnuPG using scalars | |
| p5-GSSAPI | perl interface to the GSSAPIv2 library | |
| p5-IO-Socket-SSL | perl interface to SSL sockets | |
| p5-MD5 | interface to md5 message-digest algorithm | |
| p5-Module-Signature | module signature file manipulation | |
| p5-Net_SSLeay | perl module for using OpenSSL | |
| p5-PGP-Sign | perl module to create/verify PGP signatures | |
| p5-POE-Component-SSLify | make use of SSL with POE | |
| p5-Tie-EncryptedHash | hashes with encrypting fields | |
| parse | watch a tcpdump trace in real-time | |
| passwdqc | plugin password complexity checker for passwd(1) | |
| pcsc-lite | resource manager for PCSC | |
| pdfcrack | password recovery tool for PDF-files | |
| pear-Auth | authentication system for PHP5 | |
| pear-Auth-HTTP | HTTP authentication | |
| pear-Auth-SASL | abstraction of various SASL mechanism responses | |
| pgp | Pretty Good Privacy 2.6.3ia | |
| pgp5 | Pretty Good Privacy 5.0i (world wide use) | |
| pgpdump | PGP packet visualizer | |
| pidgin-otr | allows deniable private conversations using Pidgin | |
| portscanner | simple and easy to use TCP port scanner | |
| portsentry | port scan detection and active defense | |
| ppgen | secure passphrase generator | |
| pwgen | simple password generator | |
| pwsafe | program that manages encrypted password databases | |
| py-crack | Python bindings for cracklib | |
| py-cryptkit | Python Cryptographic Toolkit | |
| py-crypto | cryptographic tools for Python | |
| py-gnupg | Python module for GnuPG interface | |
| py-openssl | Python interface to the OpenSSL library | |
| py-paramiko | Python module that implements the SSH2 protocol | |
| py-pykpass | kerberos5 password verification python module | |
| py-Rijndael | Python implementation of the Rijndael encryption algorithm | |
| py-sslwrapper | OpenSSL Wrappers for Python | |
| qca | Qt Cryptographic Architecture | |
| qca-tls | Qt Cryptographic Architecture, TLS plugin | |
| qca2 | Qt Cryptographic Architecture | |
| radiusniff | radius sniffer | |
| rarcrack | rar, 7zip and zip password bruteforcer | |
| rdp | ICMP router discovery protocol spoofer | |
| ruby-bcrypt | Ruby binding for the bcrypt() password hashing algorithm | |
| ruby-ezcrypto | Ruby interface to openssl | |
| ruby-openid | robust library for verifying and serving OpenID identities | |
| ruby-yadis | library for verifying and serving OpenID identities | |
| samdump2 | retrieves syskey and extract hashes | |
| scanlogd | TCP port scan detection tool | |
| scanssh | SSH remote version scanner | |
| scrypt | command-line encryption using scrypt key derivation function | |
| sentinel | remote promiscous mode detection tool | |
| shash | generates or checks digests or mac | |
| siphon | passive network mapping tool | |
| slurpie | distributed passwd file cracker | |
| smbsniff | sniffer for LanManager environment (ms/samba workstations) | |
| smtpscan | Remote SMTP Server Detection | |
| smurflog | logs smurf attacks | |
| ssh-askpass-fullscreen | good-looking ssh-agent pass-phrase dialog | |
| stegdetect | steganography detection tool | |
| steghide | software able to hide data in various kind of files | |
| stel | Secure Telnet, encrypted version of the telnet daemon | |
| strobe | fast scatter/gather TCP port scanner | |
| stunnel | SSL encryption wrapper for standard network daemons | |
| swatch | simple log monitoring program | |
| tcltls | OpenSSL Tcl extension | |
| tempwatch | temporary file auditing tool | |
| tinyca | GUI to manage a certification authority | |
| towitoko | library and utilities for towitoko card readers | |
| vomit | voice over misconfigured internet telephones | |
| vpnc | client for Cisco 3000 VPN concentrators | |
| whisker | stealthy webserver vulnerability scanner | |
| wpa_supplicant | IEEE 802.1X supplicant | |
| xmlsec | XML security library | |
| zebedee | portable, encrypted, compressed tunnel | |
| zkt | DNSsec Zone Key Tool | |
| nessus | Subfolder | |
| prelude | Subfolder |