Top 9 Calendar Products in Security & Privacy

The best Calendar Products within the Security & Privacy category - based on our collection of reviews & verified products.

Product categories

Appointments and Scheduling Calendar Calendar And Scheduling Email Email Clients Email Collaboration Email Management Encryption Enterprise Communication Productivity Team Collaboration Work Collaboration

Summary

The top products on this list are Simple Calendar, Lightning Calendar, and Calendar Lock PEA. All products here are categorized as: Tools for scheduling and managing appointments and events. Software focused on protecting data, networks, and systems from unauthorized access, breaches, and other digital threats, ensuring confidentiality and integrity of information. 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.

Simple Calendar Landing Page
1

Simple Calendar

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

2

Lightning Calendar

NOTE: Lightning Calendar has been discontinued.

Organize your life — it’s about time!

#Email #Appointments and Scheduling #Calendar
Calendar Lock PEA Landing Page
3

Calendar Lock PEA

Calendar Lock PEA is an encrypted desktop calendar with a day, week and month view. The shown calendars are never stored unencrypted on your disk, but exist only in the RAM. Platform-independent, Open Source, no installation or registration required.
Pricing:
- Open Source
- Free
#Appointments and Scheduling #Calendar #Security & Privacy
Rainlendar Landing Page

4

Rainlendar

Rainlendar - Customizable desktop calendar

#Email #Appointments and Scheduling #Calendar
K-9 Mail Landing Page

5

K-9 Mail

K-9 is an opensource email client making it easy to chew through large volumes of email.

#Email #Calendar #Enterprise Communication 4 social mentions
Etar Landing Page

6

Etar

Material design open source calendar for Android.

#Email #Appointments and Scheduling #Calendar
Spike Landing Page
7

Spike

Spike's AI-first email helps you stay organized, respond faster, and boost productivity effortlessly. By turning email into chat, you can work and collaborate efficiently - with anyone. Welcome to the future of email.
Pricing:
- Freemium
- Free Trial
#Productivity #Calendar #Task Management 3 social mentions
BlueMail Landing Page

8

BlueMail

BlueMail is an email management app for Android, iOS, and Windows.

#Email #Calendar #Email Clients 7 social mentions
FairEmail Landing Page
9

FairEmail

Open source, privacy friendly email app
Pricing:
- Open Source
#Email #Calendar #Email Clients 52 social mentions

Recent Calendar Posts

Security & Privacy (Aug 19)

saashub.com // about 2 months ago

Web Browsers (Feb 20)

saashub.com // 8 months ago

Best Tor Browser Alternative for Risk-Free Web Surfing

geeksforgeeks.org // over 1 year ago

The 7 best web browsers in 2025

zapier.com // about 1 year ago

Brave Alternative - 8 Privacy-Focused and Reliable Options

mspoweruser.com // about 1 year ago

Security & Privacy (Aug 15)

saashub.com // about 1 year ago

Related categories

📤 Email 📅 Appointments and Scheduling 🗓️ Calendar And Scheduling 🌐 Email Clients 💡 Productivity

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If you want to make changes on any of the products, you can go to its page and click on the "Suggest Changes" link. Alternatively, if you are working on one of these products, it's best to verify it and make the changes directly through the management page. Thanks!