Alternatives and similar repositories for cyrus-imapd

Users that are interested in cyrus-imapd are comparing it to the libraries listed below

• dovecot / core
  Dovecot mail server
  ☆1,104Updated last week
• OpenSMTPD / OpenSMTPD
  This is official OpenSMTPD Portable repository. Forks, pull requests and other contributions are welcome!
  ☆551Updated last month
• jmapio / jmap
  JSON Meta Application Protocol Specification (JMAP)
  ☆1,302Updated this week
• dbmail / dbmail
  DBMail: fast and scalable email services
  ☆172Updated last week
• jelmer / xandikos
  A CalDAV/CardDAV server backed by Git
  ☆517Updated last week
• hockeypuck / hockeypuck
  OpenPGP Key Server
  ☆351Updated last month
• sympa-community / sympa
  Sympa, Mailing List Management Software
  ☆276Updated last month
• vdukhovni / postfix
  Postfix MTA by Wietse Venema
  ☆491Updated this week
• corecode / dma
  The DragonFly Mail Agent, a small Mail Transport Agent (MTA), designed for home and office use.
  ☆249Updated 5 months ago
• NLnetLabs / nsd
  The NLnet Labs Name Server Daemon (NSD) is an authoritative, RFC compliant DNS nameserver.
  ☆504Updated this week
• Alinto / sogo
  SOGo is a very fast and scalable modern collaboration suite (groupware). It offers calendaring, address book management, and a full-featu…
  ☆1,989Updated 2 weeks ago
• dovecot / pigeonhole
  Pigeonhole project: Sieve support for Dovecot.
  ☆88Updated this week
• snikket-im / snikket-server
  Image builder for Snikket server
  ☆338Updated last month
• Z-Hub / Z-Push
  Home of Z-Push
  ☆124Updated last month
• Exim / exim
  Exim Mail Transport Agent - source, testsuite and documentation
  ☆766Updated this week
• trusteddomainproject / OpenDMARC
  This is the Trusted Domain Project's impementation of the DMARC protocol libary and mail filter, called OpenDMARC. A "milter" connects t…
  ☆124Updated 4 months ago
• 389ds / 389-ds-base
  The enterprise-class Open Source LDAP server for Linux
  ☆254Updated this week
• marlam / msmtp
  SMTP client with sendmail compatible interface
  ☆224Updated last week
• ohwgiles / laminar
  Fast and lightweight Continuous Integration
  ☆327Updated last month
• philpennock / sieve-connect
  A client for the MANAGESIEVE Protocol
  ☆80Updated 3 years ago
• jmapio / jmap-perl
  JMAP Proxy implemented in Perl
  ☆158Updated 10 months ago
• thsmi / sieve
  Sieve Script Editor
  ☆831Updated this week
• rspamd / rspamd
  Rapid spam filtering system.
  ☆2,273Updated this week
• grosjo / fts-xapian
  Dovecot FTS plugin based on Xapian
  ☆109Updated 2 weeks ago
• notqmail / notqmail
  The collaborative Open Source successor to qmail and netqmail
  ☆316Updated 3 weeks ago
• desec-io / desec-stack
  Backbone of the deSEC Free Secure DNS Hosting Service
  ☆514Updated this week
• babelouest / glewlwyd
  Experimental Single Sign On server, OAuth2, Openid Connect, multiple factor authentication with, HOTP/TOTP, FIDO2, TLS Certificates, etc.…
  ☆428Updated 10 months ago
• trusteddomainproject / OpenDKIM
  ☆106Updated last year
• apple / ccs-calendarserver
  The Calendar and Contacts Server.
  ☆498Updated 5 years ago
• emersion / neutron
  Self-hosted server for the ProtonMail client
  ☆514Updated 7 years ago