Open Source Outlook.com Alternatives
Outlook.com is described as ', part of Office Online (not to be confused with https://alternativeto'. There are more than 50 alternatives to Outlook.com for various platforms. The best alternative is ProtonMail, which is both free and Open Source. Other great apps like Outlook.com are Tutanota (Free Personal, Open Source), Disroot (Free, Open Source), Posteo (Paid, Open Source) and Teknik Mail (Paid, Open Source).
- Secure email with absolutely no compromises, brought to you by MIT and CERN scientists. View 74 alternatives to ProtonMail
- Freemium • Open Source
- Online
- Android
- iPhone
- iPad
plants It's not dissimilar to Tutanota. Both these projects are in their infancy, so technically neither is close to a mature product like Outlook, but still worthy of association under the broad category of hosted email-related services - Tutanota is a free and open source web-mail client that focuses on privacy and security. It has open source iOS and an Android apps. View 68 alternatives to Tutanota
- Free Personal • Open Source
- Online
- Android
- iPhone
- iPad
- F-Droid
- Disroot is a platform providing online services based on principles of freedom, privacy, federation and decentralization. View 14 alternatives to Disroot
- Web- and IMAP-based email service. 2GB cost 1€/month. Information is hosted on encrypted hard drives. Electricity from renewable resources is used. View 54 alternatives to Posteo
- Teknik was created to provide users with web services that they can trust. Services range from url shorteners to pastebins and encrypted file uploads. View 70 alternatives to Teknik Mail
- Fripost – the Free Email Association. View 28 alternatives to Fripost
- 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. View 71 alternatives to Inboxer
Discontinued
Project archived. See https://github.com/denysdovhan/inboxer/issues/101
- Free • Open Source
- Mac
- Windows
- Linux
- Online Collaboration with Chat and Online Office. Is developed as open source software in Germany, offered as free community version and as commercial version. Operation as self-hosted or as SaaS from the computer centre. View 17 alternatives to EGroupware
- Freemium • Open Source
- Linux
- Online
- Self-Hosted
- Software as a Service (SaaS)
- Columba is an email client written in Java, featuring a user-friendly graphical interface with wizards and internalionalization support. View 59 alternatives to Columba
Discontinued
The project is no longer developed. Last version, 1.4, released in March 2007, can be still downloaded from SourceForge.
- Free • Open Source
- Mac
- Windows
- Linux
- BSD