
Float
ResourceGuru
When I Work
Ganttic
Shiftee
Sling
Deputy
MIDAS is a web based Room Booking & Resource Scheduling Software system. Available to download & run on your server or as an online hosted cloud application

Calendly
Acuity Scheduling
TidyCal
zcal
SavvyCal
SetMore
Doodle
Cal.com (formerly Calendso) is the open source Calendly alternative.

Which is more popular?
Based on our record, Cal.com should be more popular than MIDAS. It has been mentioned 60 times since March 2021.
Website, pricing, platforms and company facts side by side.
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In their own words, as submitted to SaaSHub.


MIDAS is an easy to use yet powerful room booking system giving you complete control over your room bookings and resource scheduling, and trusted by organizations and businesses of all shapes and sizes around the world. Simply accessed through your favorite web browser, on your desktop, laptop,...
No description of Cal.com yet.
What each product offers, as listed by its team.


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


Overall verdict
Why this product is good
Recommended for
MIDAS is recommended for beginners seeking a straightforward entry into investing, as well as seasoned investors who appreciate a comprehensive platform with various financial instruments and tools to enhance their investment strategies.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Introduction to MIDAS
What can you do with Cal? | Cal.com Version 1.1 Launch | 10 new languages
More videos
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing MIDAS and Cal.com.
MIDAS's answer
MIDAS is the only mature, purpose-built room and resource scheduling system offering the customer's choice of cloud or self-hosted deployment, with fixed transparent pricing and a 20-year track record. Our median active customer retention is over 9 years!
MIDAS's answer
Booking systems come and go, and migrating between them is painful. MIDAS has been continuously developed and supported by its original developer since 2006 - celebrating 20 years in 2026 - and our median customer has been with us for over 9 years. Choose software you won't need to replace.
MIDAS pricing is published openly in five currencies and based on just two things: how many venues and how many users you need. No per-booking fees, no usage tiers, no quote requests - the price you see is the price you pay, and renewals are charged at the same standard published rates.
MIDAS's answer
MIDAS was originally developed for a large performing arts college in the UK back in 2005. Realizing its potential to help other organizations manage their room and resources bookings, it was first commercially released in early 2006. In the twenty years since, MIDAS remains in active development, with several feature-rich updates released every year and trusted by a worldwide customer base. You can read more about our backstory here
MIDAS's answer
MIDAS is written in Perl - a language commonly found on almost all web servers, and which can be readily installed on those without. The backend database supports both MySQL and MariaDB, and the front end is a mix of HTML, CSS and Javascript
Share your experience with using MIDAS and Cal.com. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


We have no reviews of MIDAS yet. Be the first one to post
The honest read: if you're leaving Acuity because your business outgrew simple scheduling — you need deposits, add-ons, multiple staff and locations, and ideally a booking site you own — Opencals is built for exactly...
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.


"Perl" is the coding language we develop our MIDAS web based room booking and resource scheduling software in. - Source: dev.to / almost 4 years ago
As "berrybrew" is specific to Strawberry perl, and we still technically support (but don't recommend ActivePerl), we tend to spin up VMs when we need to test our MIDAS software different versions of Strawberry/ActivePerl. Source: about 5 years ago
So for any self-hosted customer wishing to use install our MIDAS scheduling software on their Windows server, we suggest you avoid ActivePerl and use Strawberry Perl instead. Source: about 5 years ago
Then for the component library, I was really into coss ui. I stumbled upon it randomly one day and loved it so much. My Nathan's AI project already had a UI heavily inspired by cal.com: send button, message suggestions... So when I saw... - Source: dev.to / 6 months ago
I keep coming back to what would have happened if I didn't have a strong technical understanding of how calendar technology works — the difference between local and cloud calendars, what an ICS feed is, why enterprise auth blocks... - Source: dev.to / 7 months ago
Plausible brought open source to web analytics. Cal.com did it for scheduling. Formbricks did it for surveys. PostHog did it for product analytics. Quackback does it for feedback collection. - Source: dev.to / 7 months ago
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