Our Picks for Best Online Calendars Applications

Scheduling meetings and appointments for your nonprofit is a hassle. Luckily, increasingly popular online calendar applications make scheduling easier and more efficient, eliminating the back-and-forth emailing and calling that makes scheduling so frustrating. We’ve highlighted Next Mile Project’s favorites below.

Have a Google account? These options operate within Gmail and sync with your Google Calendar:


  • Best for: Individual Google account users scheduling one-on-one meetings
  • Works with: Google applications – Assistant.to runs through a Google Chrome extension (it won’t work in other browsers), and is only compatible with Gmail. Your recipient, however, can accept your meeting time invitation using any calendar application.
  • How it works: Assitant.to acts as your “virtual assistant” for scheduling meetings. It adds a widget to all “Compose New Message” windows in Gmail that allows you to choose meeting times that work for you, and will then add those times to your email asking the recipient to select an option. Assistant.to also scans your Google Calendar to alert you to potential time conflicts, and will send out an email when an event has been scheduled/rescheduled. It remembers your most common meeting locations and availability, making scheduling more efficient. Assitant.to is compatible with personal and business Google accounts, although it works best for personal use as it only allows for scheduling one-on-one meetings.
  • Why we like it: Assitant.to works entirely through email; recipients can schedule within the email, so there’s no need to create their own account or visit a webpage. It eliminates the need for back-and-forth emailing to decide on a meeting time.
  • Cost: Free

Boomerang Calendar

  • Best for: Google account users who want to schedule group meetings with several people
  • Works with: Google applications – Boomerang is an extension for Gmail and Google calendar, although for browsers, it is compatible with Firefox as well as Google Chrome.
  • How it works: Boomerang operates inside Gmail so you can easily add meetings from your email, eliminating the need to copy/paste meeting details. It supports group meetings of several people on its website, which makes it perfect for coordinating meetings for large groups. Boomerang creates an interactive schedule within the email that allows you and your recipient(s) to communicate your availability and proposed times in a visual interface. It also accesses your Google Calendar, and alerts you when potential meetings will overlap. Boomerang allows you to highlight dates and times with your free status to share your availability without sharing access to your Google Calendar. You can also highlight dates and times you are busy. When an email comes in suggesting a meeting date and time, Boomerang automatically notes your free/busy status.
  • Why we like it: If you use Gmail, this is the easiest way for multiple people to schedule a meeting, and a simple way to add meetings from your email account.
  • Cost: Free


  • Best for: Google account users who want to schedule internal meetings with those working within their organization
  • Works with: Google applications – Calendly only works with Google accounts. Once your invitee has accepted your meeting invitation, however, it can add the appointment to your invitee’s Google, Outlook, or iCloud calendar.
  • How it works: You set your availability preferences within Calendly. You can then share your personal Calendly links with clients, colleagues, etc., and they can pick a time that works for them based on when you are available. The event will then be automatically added to your calendar. Calendly saves multiple meeting types, so you can clone weekly or monthly meetings. It saves your preferences for length of meeting and available time slots, without affecting your default settings for new meetings. Calendly can also create custom event links for sharing events with clients and customers.
  • Why we like it: Calendly is easy to use, and features a simple design that is visually appealing.
  • Cost: Free; Premium features offered from $8/month

No Google account, or want to use an application that works independently and is universally easy to use? Try one of these options:


  • Best for: Finding a time for several people to meet that is convenient for all
  • Works with: Doodle works independently; the Premium version has the ability to integrate your Google Calendar or iCal.
  • How it works: You give Doodle your input information (meeting location, potential meeting dates, and time options), and Doodle creates a poll you can send out to your team. Each team member enters his or her email address and can then vote on a meeting date and time.
  • Why we like it: Doodle is one of the easiest calendar applications for multiple people picking a meeting time. It works independently, so it is universally easy to use. Doodle cooperates with your calendar, eliminating the hassle of switching back and forth from your calendar and the application to schedule a meeting. It also makes it easy to avoid conflicting bookings, and its ability to automatically sync appointments to your calendar makes scheduling meetings more efficient.
  • Cost: Free; Premium version offered from $39/year that allows you to integrate your Google Calendar or iCal, send automatic reminders to meeting participants, and request additional information in your poll.


  • Best for: Busy professionals without flexible schedules, who may be limited to only a few meeting times per week
  • Works with: Compatible with Outlook, Google Calendar, and iCloud; Syncs your calendars with its scheduling app.
  • How it works: Timebridge allows you to pick a few times from your Outlook or Gmail calendar that work for you and tell Timebridge who you want to attend the meeting. Timebridge arranges the meeting, syncs everyone’s calendars, and sends all of the reminders. It allows you to set several default meeting options (although you are limited to five suggested time slots per meeting) and black-out times when you’re never available. TimeBridge sends you an SMS message five minutes before your planned meetings. You also have the option of receiving a Daily Brief email from TimeBridge providing you with details about your day, including maps, directions, and weather forecasts for your meetings.
  • Why we like it: It involves minimal work on your part; Timebridge syncs with your calendar to figure out the times that work for you, and allows you to determine when you are free/busy, so that your meeting invitees can easily work around your schedule to find a meeting time that works for them.
  • Cost: Free


  • Best for: Ideal for more casual get-togethers, meetings, etc.
  • Works with: NeedToMeet has an Outlook add-in, which allows you to create events from the Outlook application. It doesn’t sync automatically with your Google Calendar or iCloud Calendar, but will add events to your calendar through the web application.
  • How it works: NeedToMeet creates a meeting event page to share with your invitees; from there, they can register for any of your open slots. Everyone visiting the registration page can see other invitee’s availability. You fill out NeedToMeet’s form with the name and details of your meeting, select the days and times you’re available to meet, and then send out invitations via NeedToMeet or email by providing your invitees with a custom link.
  • Why we like it: NeedToMeet makes collaboration easy, helping you and your invitees work around time conflicts.
  • Cost: Free


  • Best for: Coordinating large teams
  • Works with: Works independently; not reliant on any particular application.
  • How it works: Meet-O-Matic allows you to set up meeting windows with lots of people, giving you a meeting link to monitor responses to your invitation. You enter your meeting name and your email, choose your dates, and Meet-O-Matic will generate the meeting link for you. Meet-O-Matic does not sync with any calendars, so it does not have the ability to alert you to potential time conflicts. It does, however, allow you to export meeting information to an Excel or CSV spreadsheet.
  • Why we like it: You don’t need to have any other existing accounts with any other online application to use Meet-O-Matic, which makes it universally easy to use. The ability to export meeting information to an Excel or CSV spreadsheet is also great for keeping track of meeting information.
  • Cost: Free; Advanced Edition offered from $19.99/year; Workgroup Package for 10 users offered from $99/year