Horde is described as 'Enterprise-level free suite offers IMAP email, calendar, contacts, tasks, notes, file manager, wiki, syncing, multi-language support, and mobile access' and is a webmail provider in the office & productivity category. There are more than 25 alternatives to Horde for a variety of platforms, including Web-based, Self-Hosted, Linux, Android and iPhone apps. The best Horde alternative is Gmail, which is free. Other great apps like Horde are Zoho Mail, Roundcube, mailcow: dockerized and Mailpile.
Afterlogic Aurora is an enterprise collaboration system for small and medium-sized business. Aurora provides collaboration of webmail, contacts, calendar, files and helpdesk modules.
United States
Real-time email, chat, audio/video calls & conferences, file-sharing, and contacts app with a modern and intuitive UI.
Bosnia & Herzegovina
Web-based team collaboration suite combining email client, calendar, contact and task tools, CRM, project and file management, file sharing, trouble tickets, Rocket.Chat chat, and Collabora online editing. Offers open source, self-hosted, and SaaS options.
Germany
EU
Microservice based webmail client built with ReactJS and Spring.
Minimalistic webmail client which currently has the main features of any other mail client (read mail, compose mail, organize mail folders...).
SpainEU
OBM is a free messaging and collaboration platform useful for just a couple to many thousands of users with strong support for mobile devices.
GyazMail is a email client software for Mac OS X, based on Cocoa framework, simple, easy-to-use with many features.
Japan
Postaci (Turkish for Postman) is multiplatform Webmail software which is database independent, multilanguage, POP3/IMAP, and fully MIME-compatible. While using POP3 mode to fetch messages it uses database fields to simulate IMAP folders, on which you can save, move, delete, and...
The ultimate email service for personal, professional and business use.
Unique Email Addresses MeMail gives you the ability to get the email address that best represents you! 1000s of email addresses for fun, personal or business use.
Ad-Free & Secure Work Space The MeMail.
Atmail webmail system offers a webmail client, email server platform and mailserver appliance for Linux, Unix and Windows.
Australia
Unofficial, free and open-source Google Inbox Desktop App. Built using electron, Inboxer includes a menu bar which is globalmenu compatible and works, and keyboard shortcuts.
The Gmail you love, now lighter and just as fast. Enjoy a smart inbox that keeps your messages safe and you organized. Receive notifications when mail arrives, then read and respond both online & offline. Plus, find messages quickly with powerful search and lots more.
United States
Australia
