Best Calendar Products in 2025

Spend less time managing your day & more time enjoying it

Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.

As the only API powered by the Prince HTML-to-PDF engine, DocRaptor provides the best support for complex PDFs with powerful support for headers, page breaks, page numbers, flexbox, watermarks, accessible PDFs, and much more

Try for free paid Free Trial $15.0 / Monthly (125+ Documents)

A simple calendar with events (optional recurring and reminders), week numbers and a customizable...

Open Source

Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!

Fantastical, the Mac calendar app you'll enjoy using. Quickly create new events with natural language input and more.

All-in-one Calendar, Tasks & Scheduler. Morgen is the single hub for everything that revolves around time management.

eM Client is a fully-featured email client for Windows and macOS with a clean and easy-to-use interface. eM Client also offers features for calendars, tasks, contacts, notes, and chat.

freemium

Mailbird is the best email client for Windows 7, 8 and 10

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.

Open Source free

Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest. Spark for Teams allows you to create, discuss, and share email with your colleagues

Open Source

Cozi | Must-have app for the modern family

Say goodbye to phone and email tag for finding the perfect meeting time with Calendly. It's 100% free, super easy to use and you'll love our customer service.

Airmail is a lightweight and lightning fast mail client for Mac.