
MySQL
Microsoft SQL
SQLite
Oracle DBaaS
MongoDB
Oracle Database 12c
SAP HANA
PostgreSQL is a powerful, open source object-relational database system.

Calendly
TidyCal
Cal.com
Doodle
SavvyCal
Acuity Scheduling
Zencal
zcal is the fastest way to schedule every meeting for Free and make it personal.

Which is more popular?
Based on our record, PostgreSQL should be more popular than zcal. It has been mentioned 19 times since March 2021.
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | postgresql.org | zcal.co |
| Pricing | ||
| Platforms | — | |
| Company | Startup from the United States | 2021 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of PostgreSQL yet.
Say goodbye to cold, impersonal scheduling links. Use zcal to create beautiful, personalized booking pages that make a great first impression on your guests. It's 100% Free Forever 🔥! If everyone agrees that scheduling links help save time, then why are they so universally unloved? Today most...
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Zcal is recommended for individuals and professionals who frequently set up meetings or appointments, such as business professionals, freelancers, and entrepreneurs, as well as for teams and organizations that require a reliable and easy-to-use scheduling solution.
Walkthroughs and reviews on video.
Comparison of PostgreSQL and MongoDB
More videos
Meet zcal, the FREE personal Calendly alternative
More videos
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using PostgreSQL and zcal. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Choosing the right database management system (DBMS) is a crucial decision that directly impacts your project’s performance and scalability. With a variety of options — SQL Server, MySQL, PostgreSQL, MongoDB, Oracle,...
Yes, several tools, such as MySQL, PostgreSQL, and MongoDB, offer free versions. While these are robust, enterprise editions or add-ons may come with additional costs for advanced features and support.
Peliqan acts as a bridge, allowing you to e.g. effortlessly pull your PostgreSQL data into Google Sheets for easy access and analysis using its one-click connector. Additionally, Peliqan’s platform provides a...
I tried using https://cal.com for a bit but ended up just switching over to https://zcal.co and it has been great so far. All these other scheduling tools end up trying to do too much and always seem to end up a bit...
Recommendations tracked on public social media and blogs since March 2021.


In this new series we will be creating an API written in go, using a framework like Chi, connecting to a PostgreSQL, and have it deployed to a site like Railway. - Source: dev.to / 6 months ago
PostgreSQL 17 Performance Guide — Official docs for the latest performance improvements. - Source: dev.to / 7 months ago
You also might be saying, Why not include the credit and attribution data with the product data and just use one data file? Thats a great question. I could have for the purpose of this demo, but if there were a backend to this project... - Source: dev.to / about 1 year ago
>ended up just switching over to https://zcal.co and it has been great so far Wait wait wait. It can sync my Google and Outlook calendars into a single scheduling service, and they're not charging me anything? What's the catch here? - Source: Hacker News / over 3 years ago
I've poked around a while ago at some Calendly alternatives (specifically was looking for something that was cheaper than Calendly with most of the basic features). I tried using cal.com for a bit but ended up just switching over to... - Source: Hacker News / over 3 years ago
There's an even a freer alternative, not FOSS though. http://zcal.co It also allows connection to multiple calendars. - Source: Hacker News / over 3 years ago
When comparing PostgreSQL and zcal, you can also consider the following products.


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.
Compare Calendly to PostgreSQL or zcal:

Microsoft SQL is a best in class relational database management software that facilitates the database server to provide you a primary function to store and retrieve data.
Compare Microsoft SQL to PostgreSQL or zcal:

Optimize your schedule with custom booking pages and calendar integrations
Compare TidyCal to PostgreSQL or zcal:


Cal.com (formerly Calendso) is the open source Calendly alternative.
Compare Cal.com to PostgreSQL or zcal: