SSL/TLS cryptography library Also known as: openssl@1.0
This formula is keg-only.

Current version

openssl requires the following formula to be installed:
makedepend 1.0.5 Creates dependencies in makefiles

Reverse dependencies

The following formulae require openssl to be installed:
avfs 1.0.2 Virtual file system that facilitates looking inside archives
encfs 1.9.1 Encrypted pass-through FUSE file system
ori 0.8.1_1 Secure distributed file system
s3-backer 1.4.3 FUSE-based single file backing store via Amazon S3
freerdp 1.0.2 X11 implementation of the Remote Desktop Protocol (RDP)
robot-framework 3.0.1 Open source test framework for acceptance testing
x3270 3.5ga9 IBM 3270 terminal emulator for the X Window System and Windows
ntp 4.2.8p10 The Network Time Protocol (NTP) Distribution
php55 5.5.38_12 PHP Version 5.5
php53 5.3.29_8 PHP Version 5.3
php54 5.4.45_7 PHP Version 5.4
libewf 20140608_1 Library for support of the Expert Witness Compression Format
freetds@0.91 0.91.112 Libraries to talk to Microsoft SQL Server & Sybase
tarsnap 1.0.39 Online backups for the truly paranoid
megatools 1.9.98 Command-line client for
libcapn 2.0.0 C library to send push notifications to Apple devices
libexosip 4.1.0_1 Toolkit for eXosip2
libfreefare 0.4.0_1 API for MIFARE card manipulations
liboauth 1.0.3_1 C library for the OAuth Core RFC 5849 standard
libopkele 2.0.4_1 C++ implementation of OpenID decentralized identity system
gloox 1.0.20 C++ Jabber/XMPP library that handles the low-level protocol
gtmess 0.97_1 Console MSN messenger client
monkeysphere 0.41 Use the OpenPGP web of trust to verify ssh connections
lynx 2.8.8rel.2_1 Text-based web browser
rabbitmq-c 0.8.0 RabbitMQ C client
fetchmail 6.3.26 Fetch mail from a POP, IMAP, ETRN, or ODMR-capable server
shairport 1.1.1 Airtunes emulator
softhsm 2.3.0 Cryptographic store accessible through a PKCS#11 interface
ekg2 0.3.1_2 Multiplatform, multiprotocol, plugin-based instant messenger
tlsdate 0.0.13 Secure rdate replacement
proxytunnel 1.9.0_1 Create TCP tunnels through HTTPS proxies
pwsafe 0.2.0_2 Generate passwords and manage encrypted password databases
ngircd 24 Next generation IRC daemon
ettercap 0.8.2_1 Multipurpose sniffer/interceptor/logger for switched LAN
nut 2.7.4 Network UPS Tools: Support for various power devices
opensc 0.17.0 Tools and libraries for smart cards
osslsigncode 1.7.1 Authenticode signing of PE(EXE/SYS/DLL/etc), CAB and MSI files
ldapvi 1.7_3 Update LDAP entries with a text editor
luvit 2.14.2 Asynchronous I/O for Lua
ipmitool 1.8.18_2 Utility for IPMI control with kernel driver or LAN interface
kore 2.0.0 Web application framework for writing web APIs in C
fq 0.10.5 Brokered message queue optimized for performance
frag_find 1.0.0_1 Hash-based carver tool (formerly 'NPS Bloom Filter package')
freerdp 1.0.2_1 X11 implementation of the Remote Desktop Protocol (RDP)
ftimes 3.11.0_1 System baselining and evidence collection tool
x11vnc 0.9.13_1 VNC server for real X displays
xaric 0.13.7 IRC client
csup 20120305_1 Rewrite of CVSup in C
msmtp 1.6.6 SMTP client that can be used as an SMTP plugin for Mutt
avfs 1.0.5 Virtual file system that facilitates looking inside archives
jose 10 C-language implementation of Javascript Object Signing and Encryption
ophcrack 3.7.0 Microsoft Windows password cracker using rainbow tables
libopendkim 2.10.3 Implementation of Domain Keys Identified Mail authentication
xar-mackyle 1.6.1 eXtensible ARchiver
thc-pptp-bruter 0.1.4 Brute force program against PPTP VPN endpoints (TCP port 1723)
profanity 0.5.1 Console based XMPP client
gpac 0.7.1 Multimedia framework for research and academic purposes
ori 0.8.1_1 Secure distributed file system
ncrack 0.6.0 Network authentication cracking tool
blat 36 Genomic sequence search tool
tcpdump 4.9.2 Command-line packet analyzer
dnsviz 0.6.7 Tools for analyzing and visualizing DNS and DNSSEC behavior
elinks 0.11.7_2 Text mode web browser
erlang@17 Programming language for highly scalable real-time systems
isync 1.3.0 Synchronize a maildir with an IMAP server
libmowgli 2.1.3 Core framework for Atheme applications
libssh 0.7.5 C library SSHv1/SSHv2 client and server protocols
libssh2 1.8.0 C library implementing the SSH2 protocol
makepkg 5.0.2 Compile and build packages suitable for installation with pacman
mysql-cluster 7.5.7 Shared-nothing clustering and auto-sharding for MySQL
openvpn 2.4.4 SSL/TLS VPN implementing OSI layer 2 or 3 secure network extension
pincaster 0.6_1 Nosql database with a HTTP/JSON interface
sblim-sfcc 2.2.8 Project to enhance the manageability of GNU/Linux system
scrypt 1.2.1 Encrypt and decrypt files using memory-hard password function
siege 4.0.4 HTTP regression testing and benchmarking utility
skipfish 2.10b_1 Web application security scanner
sstp-client 1.0.11_1 SSTP (Microsofts Remote Access Solution for PPP over SSL) client
mosquitto 1.4.14_2 Message broker implementing the MQTT protocol
lastpass-cli 1.2.2 LastPass command-line interface tool
bibtexconv 1.1.11 BibTeX file converter
center-im 4.22.10_1 Text-mode multi-protocol instant messaging client
upscaledb 2.2.0_7 Database for embedded devices
zbackup 1.4.4_6 Globally-deduplicating backup tool (based on ideas in rsync)
libtrace 4.0.2 Library for trace processing supporting multiple inputs
lighttpd 1.4.48 Small memory footprint, flexible web-server
opusfile 0.10 API for decoding and seeking in .opus files
opensaml 2.6.1 Library for Security Assertion Markup Language
monit 5.25.1 Manage and monitor processes, files, directories, and devices
nginx-full 1.12.2 HTTP(S) server, reverse proxy, IMAP/POP3 proxy server
slrn 1.0.3a Powerful console-based newsreader
ucsc-genome-browser 338 Mirror of the UCSC Genome Browser
erlang@18 Programming language for highly scalable real-time systems
erlang@19 Programming language for highly scalable real-time systems
git-crypt 0.6.0 Enable transparent encryption/decryption of files in a git repo
yubico-piv-tool 1.5.0 Command-line tool for the YubiKey NEO PIV applet
mupdf 1.12.0 Lightweight PDF and XPS viewer
asio 1.10.8_1 Cross-platform C++ Library for asynchronous programming
h2o 2.2.4 HTTP server with support for HTTP/1.x and HTTP/2
libtins 4.0 C++ network packet sniffing and crafting library
uftp 4.9.5 Secure, reliable, efficient multicast file transfer program
alpine 2.21 News and email agent
httpd 2.4.29_1 Apache HTTP server
nrpe 3.2.1 Nagios remote plugin executor
qca 2.1.3_2 Qt Cryptographic Architecture (QCA)
monitoring-plugins 2.2 Plugins for nagios compatible monitoring systems
pure-ftpd 1.0.47 Secure and efficient FTP server
urweb 20170720 Ur/Web programming language
appscale-tools 3.4.0 Command-line tools for working with AppScale
eralchemy 1.1.0 Simple entity relation (ER) diagrams generation
fabric 1.14.0 Library and command-line tool for SSH
libtorrent-rasterbar 1.1.6 C++ bittorrent library by Rasterbar Software
onepass 0.2.1_1 Command-line interface for 1Password
osc 0.162.1 The command-line interface to work with an Open Build Service
subversion@1.8 1.8.16 Version control system
ansible-lint 3.4.20_1 Checks ansible playbooks for practices and behaviour
molecule 1.25.1_1 Automated testing for Ansible roles
monero Official monero wallet and cpu miner
php70 7.0.27_19 PHP Version 7.0
php56 5.6.33_9 PHP Version 5.6
tor Anonymizing overlay network for TCP
buku 3.6 Powerful command-line bookmark manager
root 6.12.04_1 Object oriented framework for large scale data analysis
bettercap 1.6.2_3 Complete, modular, portable and easily extensible MITM framework
dcos-cli 0.5.7_1 Cross-platform command-line utility to manage DC/OS clusters
poco 1.8.1 C++ class libraries for building network and internet-based applications
trafficserver 7.1.2 HTTP/1.1 compliant caching proxy server
charm-tools 2.2.3_1 Tools for authoring and maintaining juju charms
cfengine 3.11.0 Help manage and understand IT infrastructure
cppcms 1.2.0 Free High Performance Web Development Framework
mysql@5.6 5.6.39 Open source relational database management system
ttyd 1.4.0 Command-line tool for sharing terminal over the web
heimdal 7.5.0 Free Kerberos 5 implementation
net-snmp 5.7.3 Implements SNMP v1, v2c, and v3, using IPv4 and IPv6
openldap 2.4.45 Open source suite of directory software
rpm 4.14.1 Standard unix software packaging tool
libzdb 3.1_5 Database connection pool library
unbound 1.6.8 Validating, recursive, caching DNS resolver
wrk 4.1.0 HTTP benchmarking tool
xml-tooling-c 1.6.3 Provides a higher level interface to XML processing
mariadb-connector-c 3.0.3 MariaDB database connector for C applications
freeswitch 1.6.19_2 Telephony platform to route various communication protocols
bind 9.12.0 Implementation of the DNS protocols
termius 1.2.8 CLI tool for (aka
ldns 1.7.0_1 DNS library written in C
socat netcat on steroids
wget 1.19.4_1 Internet file retriever
certbot 0.21.1 Tool to obtain certs from Let's Encrypt and autoenable HTTPS
w3m 0.5.3_5 Pager/text based browser
arangodb 3.3.3 The Multi-Model NoSQL Database
mariadb-connector-odbc 3.0.2 Database driver using the industry standard ODBC API
encfs 1.9.4 Encrypted pass-through FUSE file system
bitcoin 0.15.1_1 Decentralized, peer to peer payment network
passenger 5.2.0 Server for Ruby, Python, and Node.js apps via Apache/NGINX
xrootd 4.8.1 High performance, scalable, fault-tolerant access to data
rtags 2.18 Source code cross-referencer like ctags with a clang frontend
gocryptfs 1.4.3 Encrypted overlay filesystem written in Go
nghttp2 1.30.0 HTTP/2 C Library
php71 7.1.14_25 PHP Version 7.1
php72 7.2.2_13 PHP Version 7.2
mutt 1.9.3 Mongrel of mail user agents (part elm, pine, mush, mh, etc.)
thrift@0.9 0.9.3 Framework for scalable cross-language services development
wimlib 1.12.0 Library to create, extract, and modify Windows Imaging files
cpprestsdk 2.10.2 C++ libraries for cloud-based client-server communication
groonga 8.0.0 Fulltext search engine and column store
mytop 1.9.1_5 Top-like query monitor for MySQL
percona-toolkit 3.0.6_1 Percona Toolkit for MySQL
percona-xtrabackup 2.4.9 Open source hot backup tool for InnoDB and XtraDB databases
postgresql 10.2 Object-relational database system
bacula-fd 9.0.6 Network backup solution
sslsplit 0.5.2 Man-in-the-middle attacks against SSL encrypted network connections
exim 4.90.1 Complete replacement for sendmail
swi-prolog 7.6.4 ISO/Edinburgh-style Prolog interpreter
asdf 0.4.2 Extendable version manager with support for Ruby, Node.js, Erlang & more
burp 2.1.28 Network backup and restore
s3-backer 1.4.4 FUSE-based single file backing store via Amazon S3
monetdb 11.27.13 Column-store database
knot 2.6.5 High-performance authoritative-only DNS server
libav 12.3 Audio and video processing tools
azure-cli 2.0.27 Microsoft Azure CLI 2.0
pyenv 1.2.1 Python version management
srt 1.2.2 Secure Reliable Transport
bro 2.5.3 Network security monitor
iperf3 3.4 Update of iperf: measures TCP, UDP, and SCTP bandwidth
magic-wormhole 0.10.5 Securely transfers data between computers
irssi 1.1.1 Modular IRC client
bareos-client 17.2.5 Client for Bareos (Backup Archiving REcovery Open Sourced)
s-nail 14.9.7 Fork of Heirloom mailx
phantomjs 2.1.1 Headless WebKit scriptable with a JavaScript API
sysbench 1.0.13 System performance benchmark tool
gsoap 2.8.63 SOAP stub and skeleton compiler for C and C++
freetds 1.00.82 Libraries to talk to Microsoft SQL Server and Sybase databases
node@8 8.9.4 Platform built on V8 to build network applications
ruby 2.5.0_2 Powerful, clean, object-oriented scripting language
ruby@2.3 2.3.6_3 Powerful, clean, object-oriented scripting language
mongodb@3.4 3.4.13 High-performance, schema-free, document-oriented database
getdns 1.4.0 Modern asynchronous DNS API
pwntools 3.12.0 CTF framework used by Gallopsled in every CTF
rust 1.24.0 Safe, concurrent, practical language
fdroidserver 1.0.2_1 Create and manage Android app repositories for F-Droid
node 9.6.1 Platform built on V8 to build network applications
mongodb@3.0 3.0.15 High-performance document-oriented database
pypy 5.10.0_1 Highly performant implementation of Python 2 in Python
pypy3 5.10.1 Implementation of Python 3 in Python
python 2.7.14_3 Interpreted, interactive, object-oriented programming language
python3 3.6.4_2 Interpreted, interactive, object-oriented programming language
libstrophe 0.9.2 XMPP library for C
saltstack 2017.7.4 Dynamic infrastructure communication bus
testssl 2.9.5-2 Tool which checks for the support of TLS/SSL ciphers and flaws
gwenhywfar 4.20.0 Utility library required by aqbanking and related software
mysql 5.7.21 Open source relational database management system
ansible@1.9 1.9.6_1 Automate deployment, configuration, and upgrading

Recent formula history

Mike McQuaid openssl: use *_by_macos.
Alex Gaynor openssl 1.0.2n
Alex Gaynor openssl 1.0.2m
ilovezfs Use “squiggly” heredocs.
ilovezfs openssl: use assert_predicate

Formula code at GitHub