
Linode
DigitalOcean
Microsoft Azure
Amazon EC2
Vultr
Bluehost
Google Compute Engine
OpenStack software controls large pools of compute, storage, and networking resources throughout a datacenter, managed through a dashboard or via the OpenStack API.

Mentimeter
Kahoot!
Poll Everywhere
AhaSlides
Glisser
Wooclap
Crowdpurr
Slido is the ultimate Q&A and polling platform for live and virtual meetings and events. It offers interactive Q&A, live polls and insights about your audience.

Which is more popular?
Based on our record, OpenStack should be more popular than Sli.do. It has been mentioned 2 times since March 2021.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | openstack.org | sli.do |
| Pricing | ||
| Platforms | — | |
| Company | — | 2012 |
| Listed in |
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
OpenStack is particularly recommended for large enterprises, organizations with skilled IT teams, academic institutions, and service providers that need a highly customizable and scalable cloud solution. It's also a great fit for entities with specific compliance requirements or those that need to run a private cloud with tailored configurations.
Overall verdict
Why this product is good
Recommended for
Sli.do is recommended for event organizers, educators, corporate trainers, webinar hosts, and conference managers. It is ideal for those looking to increase engagement in hybrid or virtual settings and for anyone seeking to make meetings and events more interactive and participant-focused.
Walkthroughs and reviews on video.
OpenStack Summit Primer, The Who, What, Why and How of OpenStack
More videos
What is Slido
More videos
How often each product is chosen within a category, 0–100% relative to the other.


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


OpenStack is a cloud framework. It provides users and enterprises with horizontal scale infrastructure. Its tools allow you to compute, store and share data and resources. It also provides self-service administration...
The plans are not the same. Slido Professional has moderation, branding and multiple rooms, among other things, and Mentimeter’s conference pack has Excel export and editing together with your team. klapp has no...
Yet another highly rated tool, Slido helps you build interactive polls, quizzes or surveys. The tool is scalable and can cater their services to both individuals, and businesses. The participants don’t need to...
Slido shares many features with the other tools on this list. But it also lets your audience prioritize questions for Q&A sessions by upvoting/downvoting them – a concept that Reddit users will be familiar with. Also,...
Recommendations tracked on public social media and blogs since March 2021.


In my first post, I looked into what is OpenStack and how, if done right, can be quite a powerful ally in our cloud deployment strategies. In this post, I want to start looking at how we can create an application to learn the basics and... - Source: dev.to / over 5 years ago
While searching for solutions and documentation on the various problems I've come across, I would often see references to OpenStack and it got my curiosity going. What is OpenStack? What services does it offer and who owns it? How do I... - Source: dev.to / over 5 years ago
Does anyone know of a open source self-hosted alternative to sli.do? Source: about 5 years ago
When comparing OpenStack and Sli.do, you can also consider the following products.

We make it simple to develop, deploy, and scale cloud infrastructure at the best price-to-performance ratio in the market.
Compare Linode to OpenStack or Sli.do:

a web-based polling tool for workshops, conferences & events
Compare Mentimeter to OpenStack or Sli.do:

Simplifying cloud hosting. Deploy an SSD cloud server in 55 seconds.
Compare DigitalOcean to OpenStack or Sli.do:

Kahoot! makes it easy to create, play and share fun learning games in minutes—for any subject, in any language, on any device.
Compare Kahoot! to OpenStack or Sli.do:

Windows Azure and SQL Azure enable you to build, host and scale applications in Microsoft datacenters.
Compare Microsoft Azure to OpenStack or Sli.do:

Audience response system that uses mobile phones, twitter, and the web. Responses are displayed in real-time on gorgeous charts in PowerPoint, Keynote, or web browser.
Compare Poll Everywhere to OpenStack or Sli.do: