Company lists · Data refreshed October 2026

Top 25 Calendar and notebook software companies worldwide

RevenueBase identified 197 company matches for calendar and notebook software companies worldwide as of October 2026 and tracks 1,158 professional contacts across them, including 203 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for calendar and notebook software companies worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 19, 2026. Country and city lists for calendar and notebook software companies follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 19, 2026 How this list was built
197Companies
1,158Contacts tracked
203Verified emails
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The 25 largest calendar and notebook software companies worldwide

Ranked by team size
Top 25 of 197 company matches for calendar and notebook software companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 19, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Oct 19, 2026201-500343 contacts →

Exact match

“Goodnotes turns complexity into clarity.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
2Exact match新宿区, JapanHQ recorded Oct 19, 202611-5055 contacts →

Exact match

“TimeTree 500 TimeTree Apple Best of 2015 App Store Watch App Store App StoreApp VERYLEECHANTO Web10 FacebookFbStart 4 120%#02 Web Designing 20163…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
3Exact matchSouth Portland, ME, United StatesHQ recorded Oct 19, 202651-20043 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
4Exact matchHyderabad, IndiaHQ recorded Oct 19, 202611-5037 contacts →

Exact match

“We create revolutionary note-taking and journaling apps for iOS, MacOS, Android, and Windows." Fluidtouch is a product development company.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
5Exact matchUkraineHQ recorded Oct 19, 202611-5035 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
6Exact matchRemote, United StatesHQ recorded Oct 19, 202611-5022 contacts →

Exact match

“At Akiflow we help users to manage their time wisely by offering an all-in-one productivity hub, where you can access and plan all your tasks.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
7Exact matchNew York, United StatesHQ recorded Oct 19, 202611-5020 contacts →

Exact match

“Vimcal is the world's fastest calendar, beautifully designed for people who have too many meetings.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
8Exact matchPortland, OR, United StatesHQ recorded Oct 19, 202611-5020 contacts →

Exact match

“The important stuff doesn't happen just because you write it down.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
9Exact matchLebanon, IN, United StatesHQ recorded Oct 19, 202611-5016 contacts →

Exact match

“TF Publishing was founded in Indianapolis, Indiana in 1996 and is one of the premier producers of calendars, planners and stationery goods in the United States.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
10Exact matchSeattle, WA, United StatesHQ recorded Oct 19, 202611-5016 contacts →

Exact match

“Cozi is a web and mobile app that combines a digital calendar, to do lists, shopping lists, meal planning, and family journal.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Oct 19, 202611-5015 contacts →

Exact match

“Humble helps individuals and teams organise their work and life, capturing everything they do across browser, Slack and their tools, so nothing gets lost.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
12Exact matchManassas, VA, United StatesHQ recorded Oct 19, 202651-20012 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
13Exact matchGurgaon, IndiaHQ recorded Oct 19, 202611-5012 contacts →

Exact match

“Zersey Infotech is a next-gen tech based company that has many brands under its portfolio.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
14Exact matchKiel, GermanyHQ recorded Oct 19, 2026201-50011 contacts →

Exact match

“Get inspired from the amazing options of our calendar range.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
15Exact matchTimisoara, RomaniaHQ recorded Oct 19, 202611-509 contacts →

Exact match

“Mindomo is the leading application to organize your thoughts, present ideas, take or record notes, study and memorize, plan your work and keep track of your goals, brainstorm, and…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
16Exact matchTargu Mures, RomaniaHQ recorded Oct 19, 202611-507 contacts →

Exact match

“Mobiscroll helps engineering teams build complex scheduling, appointment booking, planning, and resource management experiences without starting from scratch or getting locked…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
17Exact matchPrague, Czech RepublicHQ recorded Oct 19, 20261-107 contacts →

Exact match

“LukyLab is a product development company based in Prague.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
18Exact matchMelbourne, AustraliaHQ recorded Oct 19, 20261-107 contacts →

Exact match

“Elevate your planning with Lectie's interactive, branded calendars.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
19Exact matchGlasgow, United KingdomHQ recorded Oct 19, 202611-506 contacts →

Exact match

“MindGenius develop software that helps you to get organised and take back control of your work load and anything else in life that needs organising.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Oct 19, 20261-105 contacts →

Exact match

“Stop juggling calendars.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
21Exact matchNew York, NY, United StatesHQ recorded Oct 19, 20261-104 contacts →

Exact match

“Acumen is a powerful and innovative software that helps individuals and teams achieve their goals by maximizing their productivity.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
22Exact matchBolzano, ItalyHQ recorded Oct 19, 20261-104 contacts →

Exact match

“FlashBeing's mission is to organize the information that each individual needs for his daily life and make it instantly accessible.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
23Exact matchWhakatane, New ZealandHQ recorded Oct 19, 20261-104 contacts →

Exact match

“You get things done, but it ain't easy.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
24Exact matchAustin, TX, United StatesHQ recorded Oct 19, 20261-104 contacts →

Exact match

“ET Labs is a software development company in Austin, Texas devoted to simplicity and productivity.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
25Exact matchTampa, FL, United StatesHQ recorded Oct 19, 20261-104 contacts →

Exact match

“Stay organized, remember more, and get *things* done with Twos Your all-in-one hub for notes, reminders, events, ideas, and more.#HappyTwosday”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase

Showing 25 of 197 calendar and notebook software companies worldwide

See the full list, filter by size, metro and specialty, and access 203 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Calendar and notebook software companies worldwide at a glance

As of Oct 19, 2026
17.5%Verified-email coverage
5.9Average contacts per company
1-10Median size (employees)
2.0%Largest-city concentration · London
Oct 19, 2026Page data refreshed

Companies by employee count

1-10
152
11-50
33
51-200
8
201-500
3

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for calendar and notebook software companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “calendar and notebook software companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 203 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on October 19, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Calendar and notebook software companies by location

1 lists · largest first

Every Calendar and notebook software companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “calendar and notebook software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many calendar and notebook software companies are there worldwide?

RevenueBase identified 197 company matches for calendar and notebook software companies worldwide as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Goodnotes tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most calendar and notebook software companies?

The United States leads with 46 companies. Every calendar and notebook software companies list by country and city is linked on this page.

Which city has the most calendar and notebook software companies?

London leads with 4 company records, followed by Seattle (4) and New York (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 203 professional contacts with verified work emails tracked across these 197 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 19, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.