Top 6 Open-Source Alternatives to CTemplar

Product categories

Appointments and Scheduling Calendar Calendar And Scheduling Disposable Email Email Email Clients Email Productivity Email Service Provider Enterprise Communication Fake Email Hosted Email

Summary

The top open-source alternatives to CTemplar are Tutanota, Criptext, and Simple Calendar. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

Tutanota Landing Page
1

Tutanota

Get your encrypted mailbox for free.
Pricing:
- Open Source
#Email #Email Clients #Enterprise Communication 177 social mentions
Criptext Landing Page
2

Criptext

Criptext - Security that goes beyond encryption.
Pricing:
- Open Source
#Email #Email Clients #Email Service Provider 3 social mentions
Simple Calendar Landing Page
3

Simple Calendar

A simple calendar with events (optional recurring and reminders), week numbers and a customizable...
Pricing:
- Open Source
#Calendar #Appointments and Scheduling #Email 99 social mentions
FairEmail Landing Page
4

FairEmail

Open source, privacy friendly email app
Pricing:
- Open Source
#Email #Email Clients #Calendar 52 social mentions
Firefox Relay Landing Page
5

Firefox Relay

Keep your email safe from hackers & trackers...
Pricing:
- Open Source
#Email #Fake Email #Disposable Email 82 social mentions
Guerrilla Mail Landing Page
6

Guerrilla Mail

Guerrilla Mail is a web-based app that provides a disposable and anonymous email address. Users of the service are not required to set up an account in order to send or receive emails.
Pricing:
- Open Source
#Disposable Email #Fake Email #Email Productivity 5 social mentions