Software Alternatives, Accelerators & Startups

Calendly VS Spring Framework

Compare Calendly VS Spring Framework and see what are their differences

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Calendly logo Calendly

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.

Spring Framework logo Spring Framework

The Spring Framework provides a comprehensive programming and configuration model for modern Java-based enterprise applications - on any kind of deployment platform.
  • Calendly Landing page
    Landing page //
    2023-10-14
  • Spring Framework Landing page
    Landing page //
    2023-08-18

Calendly

$ Details
-
Release Date
2013 January
Startup details
Country
United States
State
Georgia
City
Atlanta
Founder(s)
Tope Awotona
Employees
100 - 249

Calendly features and specs

  • User-Friendly Interface
    Calendly has an intuitive and easy-to-use interface, which simplifies the process of scheduling meetings for both the scheduler and invitee.
  • Integration Capabilities
    Calendly integrates seamlessly with various calendar services (Google Calendar, Outlook, iCal) and other tools like Zoom, Slack, and Salesforce.
  • Customizable Availability
    Users can set their availability preferences down to the minute, allowing for precise control over when they are available for meetings.
  • Automated Reminders
    Calendly automatically sends out reminders to meeting participants, thereby reducing no-shows and ensuring everyone is prepared.
  • Group and Collective Scheduling
    Calendly supports scheduling for groups and teams, making it easier to coordinate meetings with multiple participants.

Possible disadvantages of Calendly

  • Limited Free Plan Features
    The free version of Calendly offers limited features, such as restricted event types and fewer integration options compared to the paid versions.
  • No Option for Meeting Notes
    Calendly does not have built-in functionality for adding detailed meeting agendas or notes directly within the booking system.
  • Learning Curve for Advanced Features
    While basic usage is straightforward, some users may find a steeper learning curve when trying to utilize Calendly's more advanced features.
  • Dependency on Internet Connection
    Calendly relies on a stable internet connection for real-time updates and notifications, which can be a drawback in areas with unreliable connectivity.
  • Privacy Concerns
    Sharing available time slots publicly can sometimes raise privacy concerns, especially for users who are particular about their personal information.

Spring Framework features and specs

  • Comprehensive Ecosystem
    Spring Framework provides a vast array of tools and modules which address various aspects of application development such as security, data access, and messaging. This helps in building robust enterprise applications.
  • Inversion of Control (IoC) Container
    Spring's IoC container promotes loose coupling by managing object lifecycles and dependencies, making the code more modular and testable.
  • Aspect-Oriented Programming (AOP)
    Spring's AOP module allows for separating cross-cutting concerns like logging, transaction management, and security, making the code cleaner and more maintainable.
  • Spring Boot
    Spring Boot streamlines the setup and development of new Spring applications with built-in configurations and convention over configuration, reducing boilerplate code and speeding up development time.
  • Large Community and Support
    Spring has a large and active community, extensive documentation, and a wide selection of online resources which make it easier to find support and solutions to common problems.
  • Integration Capabilities
    Spring Framework offers seamless integration with various other technologies and frameworks, including Hibernate for ORM, Apache Kafka for messaging, and more.

Possible disadvantages of Spring Framework

  • Complexity
    Spring Framework can be complex and have a steep learning curve, especially for newcomers who are not familiar with its extensive set of features and configurations.
  • Configuration Overhead
    Although Spring Boot reduces the configuration burden, traditional Spring applications may still require extensive XML or annotation-based configurations, which can be cumbersome.
  • Performance Overhead
    The flexibility and the modular nature of Spring can introduce some performance overhead compared to more lightweight solutions, which could be a concern in highly performance-sensitive applications.
  • Version Incompatibility
    Upgrading between different versions of the Spring Framework and its associated projects can sometimes lead to compatibility issues and necessitate significant code changes.
  • Dependency Management
    Managing dependencies in a large Spring application can become complicated, particularly when dealing with multiple modules and third-party libraries, potentially leading to dependency conflicts.

Analysis of Calendly

Overall verdict

  • Calendly is considered a good choice for individuals and businesses looking for an efficient way to manage appointments and streamline their scheduling process. Its ease of use and robust feature set make it a valuable tool for enhancing productivity.

Why this product is good

  • Calendly is a highly regarded scheduling tool due to its user-friendly interface, seamless integrations with other calendar apps like Google Calendar and Outlook, and its ability to automate appointment scheduling. It eliminates the back-and-forth emails needed to find a convenient meeting time. Users appreciate the numerous customization options, such as setting availability, buffer times between meetings, and limiting the number of meetings per day.

Recommended for

  • Professionals who need to manage multiple appointments and meetings.
  • Businesses seeking to provide clients with a straightforward way to schedule consultations.
  • Teams that require coordination and scheduling across different time zones.
  • Freelancers looking to automate client booking processes.

Analysis of Spring Framework

Overall verdict

  • Yes, Spring Framework is generally considered a good framework with robust features, strong community support, and extensive documentation, making it a reliable choice for Java developers working on complex, enterprise-level applications.

Why this product is good

  • Features
    Spring provides a wide range of features including dependency injection, aspect-oriented programming, transaction management, and integration with various tools and technologies.
  • Community
    Spring has a large and active community, which contributes to a wealth of resources, documentation, and third-party extensions.
  • Popularity
    Spring Framework is one of the most popular frameworks for Java development, widely used in building enterprise applications.
  • Versatility
    It offers a comprehensive programming and configuration model for modern Java-based enterprise applications, on any kind of deployment platform.

Recommended for

  • Developers building large-scale, enterprise-grade applications.
  • Teams looking for a mature and well-supported framework with a large ecosystem.
  • Projects that require integration with popular Java technologies and tools.
  • Developers focusing on microservices architecture, as Spring Boot simplifies the development of microservices.

Calendly videos

Calendly Sucks! Here's What I'm Using Now Instead...

More videos:

  • Tutorial - Calendly Tutorial: Book Yourself Solid on Autopilot
  • Review - Review: Calendly

Spring Framework videos

What is the Spring framework really all about?

More videos:

  • Tutorial - Spring Framework Tutorial | Full Course

Category Popularity

0-100% (relative to Calendly and Spring Framework)
Appointments and Scheduling
Web Frameworks
0 0%
100% 100
Appointment Scheduling
100 100%
0% 0
Developer Tools
0 0%
100% 100

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare Calendly and Spring Framework

Calendly Reviews

  1. Edi Malkovich
    Best scheduling app

    Very simple and easy to use. Eliminate this back and forth hustle with booking calls.


Acuity Scheduling alternatives for businesses outgrowing it
Calendly is the meeting-scheduling default โ€” connect calendars, share a link, and let people book time, with round-robin and team routing on paid tiers. If your "Acuity problem" is really just meetings and your business doesn't hinge on deposits, packages, or a service storefront, Calendly is cleaner and more focused than Acuity for that job. It's not the tool for a salon or...
Source: opencals.com
The Best 24 Appointment Scheduling Apps and Booking Software
I have frequently used Calendly in the past, primarily for scheduling job interviews. What I appreciate about Calendly is that the free version still allows you to connect one calendar, book unlimited meetings, create a custom Calendly link, and send out automatic email notifications and reminders to invitees who book with you.
neetoCal, a calendly alternative, is a commodity and is priced accordingly
neetoCal is not the first company to compete with Calendly. We are not even the second company to compete with Calendly. We are probably the 30th player in this crowded space. With so many players in the market, scheduling software seems like a commodity.
Source: blog.neeto.com
I've poked around a while ago at some Calendly alternatives (specifically was lo... | Hacker News
Calendly is only $12/month for their professional plan which saves you money if you even schedule only one meeting a month with it.
The Best Alternatives to Doodle That You Should Check Out
Some may remember the Zoom.ai application. This app has been rebranded as CalendarHero, which resembles Calendly. You can suggest different meetings at different times and then share a link with invitees. Invitees can then indicate their preferred meeting time.
Source: trafft.com

Spring Framework Reviews

Top 9 best Frameworks for web development
Spring offers a wide range of frameworks, such as an MVC framework, a data access framework and a transaction management framework. With its focus on scalability and security, Spring is an excellent choice.
Source: www.kiwop.com
17 Popular Java Frameworks for 2023: Pros, cons, and more
Therefore, the configuration, setup, build, and deployment processes all require multiple steps you might not want to deal with, especially if youโ€™re working on a smaller project. Spring Boot (a micro framework that runs on top of the Spring Framework) is a solution for this problem, as it allows you to set up your Spring application faster, with much less configuration.
Source: raygun.com
Top 10 Phoenix Framework Alternatives
Spring Framework is an open-source app framework and inversion of control container for the Java platform, providing the infrastructure required to develop Java and web apps on top of the Java EE platform.
10 Best Java Frameworks You Should Know
Spring Framework is one of the most extensively used, top-notch, lightweight software application frameworks built for software design, development, and deployment in Java.

Social recommendations and mentions

Based on our record, Calendly should be more popular than Spring Framework. It has been mentiond 119 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Calendly mentions (119)

  • AI Almost Sold Me a Subscription I Didn't Need
    Claude took a different path but landed in the same place. It suggested Calendly, Cal.com (open source), and SavvyCal as products I can subscribe to. When I explained that my work calendar was behind corporate SSO and I cannot use my personal computer to link calendars, it pivoted to bridging apps like Sync My Calendar and DAVx5 to push data from my Android to the cloud. It did mention Google Calendar's Booking... - Source: dev.to / 5 months ago
  • Tools for Building a Modern JavaScript Booking Application
    However, if you are looking for an out-of-the-box solution with minimal technical involvement, it is reasonable to consider SaaS platforms such as Appointedd, Calendly, and Scheduly. These products may not provide the same level of flexibility and customization as the DHTMLX Booking widget, but they can be the right choice when speed and ease of deployment are the main priorities. - Source: dev.to / over 1 year ago
  • Calendly and Accessibility Problems
    Calendly is a scheduling platform. I decided to use Calendly on my homepage, giving someone the ability to choose a time and book a call. - Source: dev.to / over 1 year ago
  • Using Clerk SSO to access Google Calendar and other service data
    BookMate is an open-source, publicly accessible, lightweight clone of popular booking services like cal.com or Calendly. - Source: dev.to / over 1 year ago
  • A list of SaaS, PaaS and IaaS offerings that have free tiers of interest to devops and infradev
    Calendly โ€” Calendly is the tool for connecting and scheduling meetings. The free plan provides 1 Calendar connection per user and Unlimited sessions. Desktop and Mobile apps are also offered. - Source: dev.to / over 2 years ago
View more

Spring Framework mentions (13)

  • March 2025 Java Key Updates in Boot, Security, and More
    The release of Spring Framework 6.2.5 includes:. - Source: dev.to / over 1 year ago
  • Getting Started with Spring Boot 3 for .NET Developers
    Spring Framework 6: https://spring.io/projects/spring-framework. - Source: dev.to / over 1 year ago
  • Want to Get Better at Java? Go Old School.
    We had to write our own frameworks (uphill, both ways) but most current frameworks will have similar documentation pages as well. Both Apache and Spring are especially good at that. - Source: dev.to / over 3 years ago
  • Best Frameworks For Web Development
    Framework link: https://spring.io/projects/spring-framework Github Link: https://github.com/spring-projects/spring-framework. - Source: dev.to / almost 4 years ago
  • What to you do now?
    A common used Java framework is Spring framework (ie https://spring.io/projects/spring-framework and short tutorials at https://www.baeldung.com/spring-intro). Source: almost 4 years ago
View more

What are some alternatives?

When comparing Calendly and Spring Framework, you can also consider the following products

Acuity Scheduling - Automate your client bookings, cancellations, reminders & payments using the worlds friendliest online scheduling software.

Grails - An Open Source, full stack, web application framework for the JVM

Doodle - Make meetings happen. With Doodle, scheduling becomes quick and easy.

Apache Struts - Apache Struts is an open-source web application framework for developing Java EE web applications.

SimplyBook.me - Online scheduling software that offers you a beautiful customisable booking website (or widget to your own website) to accept bookings and payments with the possibility of selling products as well.

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