CodeUtil.dev
CodeLive Studio.cyou
SamToolkit
Free Dev Tools Studio
Livecode
Base64Encode.dev
CodePen
Fast, free developer tools. JSON formatter, Base64, JWT, Regex and more. Runs 100% in your browser.

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, Sli.do seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
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CT
CodeTray.dev
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| Website | codetray.dev | 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
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.
No CodeTray.dev videos yet. You could help us improve this page by suggesting one.
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 CodeTray.dev 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.

We have no reviews of CodeTray.dev yet. Be the first one to post
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.

Tracking CodeTray.dev since Jun 2026.
Does anyone know of a open source self-hosted alternative to sli.do? Source: about 5 years ago
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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.
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