Top 13 Calendar Software Companies (October 2026)

Austin, Texas, United States

CiraSync is a secure, Azure-based SaaS platform that automates the syncing of Office 365 Global Address Lists, shared calendars, Public Folders, and CRM contacts to your business smartphone in about a minute. The solution is extremely easy to install, requires no user training, and can scale to thousands of business smartphones quickly. More than 5,000 companies benefit from the productivity gains and cost savings of contact and calendar automation. The company is headquartered in San Jose, California.

Toronto, Ontario, Canada

Mayday is a Toronto-based calendar and time-management software company founded in 2019 by Jeremy Bell, who serves as CEO. The company is building an AI-assisted scheduling product designed to act as a personal time management assistant, learning user priorities and automatically optimizing calendar placement for meetings and focus time. As of May 2022, Mayday remained in closed beta with no paying customers, operating on seed funding while preparing to introduce a paywall later in 2022. Bell wrote the first line of code for Mayday in mid-2019 and raised approximately $750,000 in a pre-seed friends-and-family round before closing a $3 million seed round at the end of 2021. The company had accumulated a beta waitlist of tens of thousands of users by May 2022, built primarily through organic word-of-mouth and a custom social-listening system Bell constructed using Zapier and Slack. The team stood at 13 people at the time of the interview, with roughly half dedicated to engineering. Bell previously co-founded Wadid.io, which he sold to Precision Nutrition, and was a partner at Teehan+Lax before that firm was acquired by Facebook, though Bell had departed prior to that exit.

Deventer, Overijssel, Netherlands

Synigo Pulse is the ready-to-use platform for your social intranet and digital workplace. You can find everything you need to work or study, such as: conversations, chats, tasks, calendars, notifications, applications, company news, and the teams you work in. Our software is used by organisations such as Vitaminstore, Talpa Network, Humanitas DMH, J.P. Van den Bent, Visser & Visser Accountants, Fellowmind, UNICEF, Inholland University, Friese poort, ROC Noorderpoort and Johan Cruyff Foundation. We work with technology and consultancy companies (including Microsoft, Simac, Broad Horizon, Brunel, Lemontree). We offer a SaaS solution, which is continuously developed. Every month you experience innovations and improvements. Special features are available for education (grades, schedules) and health care. Learn how the accounting firm Visser & Visser, with 350 employees, works from home overnight and gets more from Microsoft Teams and Office 365. https://www.synigopulse.com/nl/blog/item/visser-visser-flexibel-en-innovatief-ook-als-het-gaat-om-de-werkplek You get the following benefits Easier to work with Microsoft (Office) 365/Teams Synigo Pulse is user-friendly, intuitive and pleasant to work with. You'll get the hang of it quickly. With our platform you have the organization in your pocket: everything at hand and less clicks and search. Quick implementation Our software for Microsoft 365 is a SaaS solution that allows you to create a digital workplace in no time. No hassle with technology or long tailor-made processes. Synigo Pulse allows you to use it self-reliantly. Integration with existing systems Work smarter with notifications and information from other systems and applications, so you have an overview and don't miss anything. Applications are notifications and smart lists from your applications or a client portal. You can experience Synigo Pulse yourself with a trial. https://www.synigopulse.com/demo/

Zurich, Switzerland

Morgen is your AI assistant helping you with scheduling in time for any task you are given at work and meetings. All is served through one app providing you with a single point of reference for all your calendars, to-dos, productivity apps, and schedulers, so you manage all your time in one place. Product of the Day, Product Hunt.🚀 Available on Mac, Windows, Linux, iOS, and Android.

Atlanta, Georgia, United States

OfficeClip LLC is a software company that creates web management software for businesses. We offer Web Based Timesheet and Expense software, Web Contact Manager, Bug Issue Tracker software and Online Calendar and Document Sharing. Each of these are offered individually or all together as our Premium Suite to help you meet your business needs. OfficeClip is an affordable, easy to use online software that can help you manage your business more effectively. OfficeClip will let you reduce administrative tasks, keep track of contacts, sales opportunities, issues and the amount of time/money spent on your projects. All this allows you to know exactly where all your resources are being used at any one time.

Bengaluru, Karnataka, India

Lio lets businesses calculate, tabulate, and organize tasks such as creating to-do lists, wedding registries, and class schedules.

United States

Klynke Time Management is a time-tracking and project management app integrating with Microsoft Outlook, Planner, and Teams - all in one place. Our Klynke app is ideal for small and medium sized teams who want to track time more easily and more effectively.

United States

The #1 Office Management and Billing Software for Equestrians! BarnManager.com is an easy-to-use web-based software designed to organize and streamline every barn’s program. Users can track horses’ work schedule, medical records, create monthly invoices, and manage their barn’s entire calendar from their computer or mobile device. Discover more features and try it risk-free at www.barnmanager.com. BarnManager.com. Life made easier.

Brooklyn, New York, United States

KosmoTime | Smart Calendar for Time Blocking & Focused Work Our unique calendar app features take you to the next level of productivity: • Sync your calendars: no more double bookings! • Capture and schedule tasks in your calendar • Mute distractions and focus on your work And more features: Time Tracker, URL Bookmarking, Asana and Slack integrations. Find out how KosmoTime will make you more productive!

Seattle, Washington, United States

Meeting Room 365 is the fastest way to add a Meeting Room display to Office 365, Exchange, and G Suite (Google Calendar).