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
rdesktop 1.8.3 UNIX client for connecting to Windows Remote Desktop Services
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
sylpheed 3.5.1 Simple, lightweight email-client
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
mongodb@3.2 3.2.11 High-performance, schema-free, document-oriented database
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
strongswan 5.6.1 VPN based on IPsec
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
nsd 4.1.19 Name server daemon
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
tarantool In-memory database and Lua application server
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
libcouchbase 2.8.4 C library for Couchbase
pjproject 2.7.1 C library for multimedia protocols such as SIP, SDP, RTP and more
ruby-build 20171226 Install various Ruby versions and implementations
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
node@4 4.8.7 Platform built on V8 to build network applications
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
fdroidserver 1.0.0 Create and manage Android app repositories for F-Droid
ruby@2.3 2.3.6_2 Powerful, clean, object-oriented scripting language
monero Official monero wallet and cpu miner
php70 7.0.27_19 PHP Version 7.0
python3 3.6.4_2 Interpreted, interactive, object-oriented programming language
percona-server 5.7.20-19 Drop-in MySQL replacement
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
mitmproxy 2.0.2_2 Intercept, modify, replay, save HTTP/S traffic
trafficserver 7.1.2 HTTP/1.1 compliant caching proxy server
charm-tools 2.2.3_1 Tools for authoring and maintaining juju charms
zabbix 3.4.6 Availability and monitoring solution
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
mongodb 3.6.2 High-performance, schema-free, document-oriented database
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
folly 2018.02.12.00 Collection of reusable C++ library artifacts developed at Facebook
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
postgresql@9.4 9.4.16 Object-relational database system
erlang 20.2.3 Programming language for highly scalable real-time systems
azure-cli 2.0.27 Microsoft Azure CLI 2.0
node@6 6.13.0 Platform built on V8 to build network applications
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
nginx 1.13.8 HTTP(S) server and reverse proxy, and IMAP/POP3 proxy server
phantomjs 2.1.1 Headless WebKit scriptable with a JavaScript API
sysbench 1.0.13 System performance benchmark tool

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