LettuceMeet helps groups schedule meetings for free without accounts and supports Google Calendar integration.
The Best Proton Calendar Alternatives in 2026
Looking for something like Proton Calendar? Here are 24 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 2 are free or have a free plan and 2 are open source.
Proton Calendar provides a calendar app from Proton, with options for free accounts and business use.
Top picks at a glance
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | LettuceMeet | Free | Not stated | Web |
| 2 | Tweek | — | Not stated | Android, iOS, Web |
| 3 | time.fyi | — | Not stated | macOS, Web |
| 4 | Markwhen | — | Yes | — |
| 5 | Tuta Calendar | — | Not stated | Android, iOS, Web |
| 6 | Diffen | — | Not stated | Android, iOS, Web |
| 7 | Spliit | — | Not stated | iOS, Web |
| 8 | Eventbrite | — | Not stated | Web |
| 9 | SaaS Discovery | — | Not stated | Web |
| 10 | Office Holidays | — | Not stated | Web |
All Proton Calendar alternatives
Tweek
tweek.soPlan the week with Tweek's minimal calendar and personal or shared to-do lists.
time.fyi
time.fyiPlan a week, manage tasks and share booking links using time.fyi with Google Calendar.
Markwhen creates cascading timelines from Markdown-like text, with date formats, links, images, and location support described in its repository.
Tuta Calendar
tuta.com/calendarTuta Calendar encrypts schedules and events, with personal and business account options listed on its calendar service page.
Diffen
diffen.comDiffen publishes comparisons across topics including health, science, technology, food, business, and insurance.
Spliit
spliit.appSpliit helps friends and families share expenses through a web app that is free, open source, and usable without accounts.
Eventbrite
eventbrite.comEventbrite lists local events and activities across music, arts, nightlife, business, food, hobbies, and other interests.
SaaS Discovery
saasdiscovery.comDiscover business software and browse app comparisons in this directory of SaaS products.
Office Holidays
officeholidays.comFind dates for public and bank holidays across countries with Office Holidays' calendar listings.
Find a time that works for a group with Groop's free scheduling tool, which requires no account.
Wheel of Names
wheelofnames.comWheel of Names selects a random winner from entered names, with options to customize, save, and share wheels.
Wheel Decide
wheeldecide.comWheel Decide creates custom choice wheels for random decisions such as picking lunch, a movie, or another option.
Heylo
heylo.comHeylo supports group leaders with events, communications, and payments, with free entry and brand options listed.
PickerWheel
pickerwheel.comPicker Wheel selects a random choice by spinning a customizable wheel with entered names or options.
genon.ru
genon.ruGenon is a Russian question-and-answer site where contributors respond to questions across topics such as business, travel, and home.
SpinTheWheel
spinthewheel.netMake and spin a wheel online to help choose between options with this random decision tool.
NoSignups curates browser-based open-source tools that require no account, with a directory users can browse and run locally.
Meetup
meetup.comMeetup helps people find local groups, events, and activities, or create groups around shared interests.
ExpertFile
expertfile.comExpertFile connects experts with media, prospects and events through profile and discovery tools.
Cally
cally.comCally helps friends, families, and colleagues schedule events by choosing a date and location together.
endoflife.date
endoflife.dateendoflife.date tracks end-of-life dates, support schedules, and release timelines for more than 380 products.
KittySplit
kittysplit.com/enKittysplit calculates how to divide group expenses and shows who owes what.
SpinWheelify
spinwheelify.comCreate a custom decision wheel, add entries and spin it to select a random result.
Alternatives to similar tools
What is the best alternative to Proton Calendar?
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Alternatives are suggested from the purpose and features described in our listings. Different pages for the same product appear once. Read each description to check whether it fits your task. How we choose alternatives · Suggest an alternative























