Comparison guide · Updated 13 Oct 2026

The 18 best Slido and Mentimeter alternatives for live event Q&A

We compared PostoBox with 18 audience Q&A, polling and engagement tools on what matters on event day: moderation, branding, how attendees join, questionnaires and integrations. Every claim comes from the vendors' own websites, checked in Oct 2026.

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tools reviewed against their own websites

10 of 18

keep Q&A moderation on paid plans only

0 of 18

include a full public API in their base offer

The short answer

Running live events and need moderated Q&A under your own brand? PostoBox includes the moderation queue, external moderators and your logo and colour on every plan. Most popular tools, including Slido, Mentimeter, AhaSlides, Vevox, Wooclap and Poll Everywhere, only offer Q&A moderation on paid plans.

Building your whole talk inside interactive slides, or mainly running quizzes? Mentimeter, AhaSlides and Kahoot! offer more slide types and games. We say so on each comparison page, so you can pick the right tool for your event.

What PostoBox includes on every plan

The things event teams usually have to upgrade for elsewhere.

Moderated Q&A on every plan

Turn on the moderation queue for any event, including on the free plan. Approve or reject questions, mark them answered and pick the one shown on the big screen.

External moderators with a private link

Hand a moderator link to a speaker, MC or client. They moderate from their phone without creating an account or taking up a team seat.

Your own branded event hub

Every organisation gets a subdomain like yourorg.postobox.app with your logo and colour. Attendees land on your brand, not on a shared join site.

Questionnaires built for live rooms

Run self-paced or presenter-paced questionnaires with timers, repeat them in rounds with results kept per round, and keep sensitive answers off the projector.

No app, no account for attendees

Attendees scan a QR code or open a link in any phone browser and start asking, voting and answering. Questions, votes and results update live.

Open REST API

Manage events and questions from your own systems with scoped API keys, documented publicly at postobox.app/docs/api.

By the numbers

Counted from the comparison table below. Every tool is scored the same way.

How 18 tools offer Q&A moderation

PostoBox includes it on every plan.

Included in the base offer · 4: Pigeonhole Live, Whova, Trivia Anywhere, Particify
Paid plans only · 10: Slido, Mentimeter, AhaSlides, Vevox, Wooclap, Poll Everywhere, Kahoot!, DialogLoop, Dory, Polly
Limited or not offered · 4: Crowdpurr, QuestionPro LivePolls, StreamAlive, ClassPoint

Core event features included without an upgrade

Out of 9: Q&A upvoting, Moderation, Anonymous, Polls, Surveys, Big screen, Branding, No-app join, API. Hover a bar to see which.

PostoBox
9
PostoBox: 9 of 9
Included: Q&A upvoting, Moderation, Anonymous, Polls, Surveys, Big screen, Branding, No-app join, API
Pigeonhole Live
7
Pigeonhole Live: 7 of 9
Included: Q&A upvoting, Moderation, Anonymous, Polls, Surveys, Big screen, No-app join
Upgrade or not offered: Branding, API
Particify
7
Particify: 7 of 9
Included: Q&A upvoting, Moderation, Anonymous, Polls, Surveys, Big screen, No-app join
Upgrade or not offered: Branding, API
Mentimeter
6
Mentimeter: 6 of 9
Included: Q&A upvoting, Anonymous, Polls, Surveys, Big screen, No-app join
Upgrade or not offered: Moderation, Branding, API
AhaSlides
6
AhaSlides: 6 of 9
Included: Q&A upvoting, Anonymous, Polls, Surveys, Big screen, No-app join
Upgrade or not offered: Moderation, Branding, API
Poll Everywhere
6
Poll Everywhere: 6 of 9
Included: Q&A upvoting, Anonymous, Polls, Surveys, Big screen, No-app join
Upgrade or not offered: Moderation, Branding, API
Trivia Anywhere
6
Trivia Anywhere: 6 of 9
Included: Q&A upvoting, Moderation, Anonymous, Polls, Big screen, No-app join
Upgrade or not offered: Surveys, Branding, API
Slido
5
Slido: 5 of 9
Included: Q&A upvoting, Anonymous, Polls, Big screen, No-app join
Upgrade or not offered: Moderation, Surveys, Branding, API
Vevox
5
Vevox: 5 of 9
Included: Q&A upvoting, Anonymous, Polls, Big screen, No-app join
Upgrade or not offered: Moderation, Surveys, Branding, API
Wooclap
5
Wooclap: 5 of 9
Included: Q&A upvoting, Anonymous, Polls, Big screen, No-app join
Upgrade or not offered: Moderation, Surveys, Branding, API
Whova
5
Whova: 5 of 9
Included: Q&A upvoting, Moderation, Polls, Surveys, Big screen
Upgrade or not offered: Anonymous, Branding, No-app join, API
Crowdpurr
4
Crowdpurr: 4 of 9
Included: Anonymous, Polls, Big screen, No-app join
Upgrade or not offered: Q&A upvoting, Moderation, Surveys, Branding, API
DialogLoop
4
DialogLoop: 4 of 9
Included: Q&A upvoting, Anonymous, Big screen, No-app join
Upgrade or not offered: Moderation, Polls, Surveys, Branding, API
Dory
4
Dory: 4 of 9
Included: Q&A upvoting, Anonymous, Polls, Big screen
Upgrade or not offered: Moderation, Surveys, Branding, No-app join, API
Polly
4
Polly: 4 of 9
Included: Anonymous, Polls, Surveys, Big screen
Upgrade or not offered: Q&A upvoting, Moderation, Branding, No-app join, API
Kahoot!
3
Kahoot!: 3 of 9
Included: Polls, Big screen, No-app join
Upgrade or not offered: Q&A upvoting, Moderation, Anonymous, Surveys, Branding, API
QuestionPro LivePolls
3
QuestionPro LivePolls: 3 of 9
Included: Polls, Big screen, No-app join
Upgrade or not offered: Q&A upvoting, Moderation, Anonymous, Surveys, Branding, API
StreamAlive
3
StreamAlive: 3 of 9
Included: Polls, Big screen, No-app join
Upgrade or not offered: Q&A upvoting, Moderation, Anonymous, Surveys, Branding, API
ClassPoint
2
ClassPoint: 2 of 9
Included: Polls, No-app join
Upgrade or not offered: Q&A upvoting, Moderation, Anonymous, Surveys, Big screen, Branding, API

0369

How an event runs on PostoBox

From set-up to the big screen in four steps.

Step 1
Create your event
Name it, switch on moderation and anonymous questions, add polls and questionnaires.
Step 2
Share the QR code
Attendees scan it and join on your branded subdomain. No app, no sign-up.
Step 3
Moderate live
Approve or reject questions from any phone, or hand a private link to a guest moderator.
Step 4
Put it on the big screen
Show the chosen question, poll results and questionnaires full screen as they update.

Feature comparison at a glance

Tap a tool's name for the full comparison. On a phone, scroll the table sideways.

IncludedPaid plansPartialNot offered

Tool	Q&A upvoting	Moderation	Anonymous	Polls	Surveys	Big screen	Branding	No-app join	API	Quizzes	Word cloud	Slides add-in	Zoom / Teams	AI	SSO
PostoBox	Included	Included	Included	Included	Included	Included	Included	Included	Included	Not offered	Not offered	Not offered	Not offered	Not offered	Not offered
Slido	Included	Paid plans	Included	Included	Paid plans	Included	Paid plans	Included	Partial	Included	Included	Included	Included	Included	Paid plans
Mentimeter	Included	Paid plans	Included	Included	Included	Included	Paid plans	Included	Not offered	Included	Included	Included	Included	Included	Paid plans
Pigeonhole Live	Included	Included	Included	Included	Included	Included	Partial	Included	Paid plans	Included	Included	Included	Included	Paid plans	Paid plans
AhaSlides	Included	Paid plans	Included	Included	Included	Included	Paid plans	Included	Partial	Included	Included	Included	Paid plans	Included	Paid plans
Vevox	Included	Paid plans	Included	Included	Paid plans	Included	Paid plans	Included	Not offered	Included	Paid plans	Included	Included	Included	Paid plans
Wooclap	Included	Paid plans	Included	Included	Paid plans	Included	Paid plans	Included	Not offered	Included	Included	Included	Partial	Paid plans	Paid plans
Poll Everywhere	Included	Paid plans	Included	Included	Included	Included	Paid plans	Included	Not offered	Included	Included	Included	Partial	Included	Paid plans
Kahoot!	Paid plans	Paid plans	Not offered	Included	Paid plans	Included	Paid plans	Included	Partial	Included	Paid plans	Included	Included	Included	Paid plans
Crowdpurr	Not offered	Partial	Included	Included	Partial	Included	Paid plans	Included	Not offered	Included	Not offered	Not offered	Partial	Included	Not offered
Whova	Included	Included	Not offered	Included	Included	Included	Paid plans	Not offered	Partial	Included	Included	Not offered	Partial	Partial	Partial
DialogLoop	Included	Paid plans	Included	Paid plans	Paid plans	Included	Paid plans	Included	Not offered	Paid plans	Paid plans	Included	Partial	Not offered	Not offered
Trivia Anywhere	Included	Included	Included	Included	Not offered	Included	Paid plans	Included	Not offered	Included	Not offered	Not offered	Not offered	Not offered	Not offered
Particify	Included	Included	Included	Included	Included	Included	Paid plans	Included	Not offered	Included	Included	Partial	Not offered	Not offered	Paid plans
Dory	Included	Paid plans	Included	Included	Not offered	Included	Not offered	Partial	Not offered	Not offered	Not offered	Not offered	Not offered	Not offered	Paid plans
QuestionPro LivePolls	Partial	Not offered	Paid plans	Included	Partial	Included	Not offered	Included	Not offered	Included	Paid plans	Partial	Partial	Included	Not offered
StreamAlive	Partial	Partial	Partial	Included	Not offered	Included	Paid plans	Included	Not offered	Included	Included	Included	Included	Included	Paid plans
ClassPoint	Paid plans	Not offered	Not offered	Included	Not offered	Partial	Paid plans	Included	Partial	Included	Included	Included	Not offered	Included	Not offered
Polly	Paid plans	Paid plans	Included	Included	Included	Included	Paid plans	Partial	Paid plans	Included	Included	Included	Included	Partial	Paid plans

“Paid plans” means the feature exists but not on the free plan. “Partial” means limited, in beta, or only in some versions. Based on public information reviewed 13 Oct 2026.

18 alternatives, compared one by one

What each tool is, who it suits, and where PostoBox is the better pick.

1
PostoBox vs Slido
Meeting Q&A and polling · Founded in Bratislava, Slovakia; owned by Cisco (Webex) since 2021
Slido is Cisco's Q&A and polling tool for meetings, all-hands and events, built into Webex and available for PowerPoint, Teams and Zoom.
Best for: Companies already on Webex or Microsoft Teams that run frequent internal meetings and need deep integrations and certifications.
Why choose PostoBox
Slido is the default meeting tool, but its free and entry plans run Q&A without a moderation queue or your branding. PostoBox includes both on every plan and gives each organisation its own branded event hub.
Read the full PostoBox vs Slido comparison
2
PostoBox vs Mentimeter
Interactive presentations · Mentimeter AB, Stockholm, Sweden (founded 2014)
Mentimeter turns a slide deck into an interactive presentation with polls, quizzes, word clouds and Q&A, and now sells Menti Live, Menti Form and Menti Pulse.
Best for: Presenters who build their whole talk inside Mentimeter slides and want many slide types and AI help.
Why choose PostoBox
Mentimeter is a presentation tool where Q&A is one slide in a deck, licensed per presenter. PostoBox is built around the event: a moderated Q&A room, polls and questionnaires that any number of speakers and moderators can run under your brand.
Read the full PostoBox vs Mentimeter comparison
3
PostoBox vs Pigeonhole Live
Event Q&A and engagement · PigeonLab Pte Ltd, Singapore
Pigeonhole Live is a Q&A-first audience engagement platform for conferences, town halls and webinars, with polls, quizzes and surveys built around it.
Best for: Large multi-session conferences that need agenda-based Events, AI translation and integrations with event platforms.
Why choose PostoBox
Pigeonhole Live is the closest match to PostoBox and a strong conference tool. PostoBox gives every organisation its own branded event hub, includes its API on every plan and adds questionnaires that run in rounds.
Read the full PostoBox vs Pigeonhole Live comparison
4
PostoBox vs AhaSlides
Interactive presentations · AhaSlides Pte Ltd, Singapore
AhaSlides is an interactive presentation tool with polls, quizzes, word clouds, idea boards and Q&A slides, plus AI and integrations.
Best for: Trainers and teachers who want lots of fun slide types and quizzes inside a presentation.
Why choose PostoBox
AhaSlides is a playful presentation tool; its Q&A is a slide and moderation is a Pro feature. PostoBox is made for moderated event Q&A, with your branding on every plan.
Read the full PostoBox vs AhaSlides comparison
5
PostoBox vs Vevox
Polling, quizzes and Q&A · Auga Technologies Ltd, UK; acquired by Wooclap in September 2026
Vevox is a polling, quiz and Q&A platform popular with universities and corporate training teams, with AI-assisted question creation.
Best for: Universities and L&D teams that need LMS and PowerPoint integrations, accessibility and ISO 27001.
Why choose PostoBox
Vevox is strong in classrooms and training, but moderation and branding need a paid plan and seats are per user. PostoBox includes moderation, external moderators and branding on every plan.
Read the full PostoBox vs Vevox comparison
6
PostoBox vs Wooclap
Active-learning presentations · Brussels, Belgium (founded 2015); owner of Vevox since 2026
Wooclap is an interactive presentation platform for active learning, with over 20 question types, a Q&A message wall and an AI Live Facilitator.
Best for: Universities and training teams that want learning-science features and LMS integration.
Why choose PostoBox
Wooclap is built for the lecture hall, with moderation and branding on its Pro plan. PostoBox is built for live events, with moderated Q&A and your branding on every plan.
Read the full PostoBox vs Wooclap comparison
7
PostoBox vs Poll Everywhere
Polling for presentations · San Francisco, USA (founded 2007)
Poll Everywhere embeds live polls into PowerPoint, Google Slides, Keynote and Canva, and supports SMS responses.
Best for: Lecturers and presenters who want polls inside existing slides, attendance tracking and LMS grading.
Why choose PostoBox
Poll Everywhere is polling-first, with Q&A as a secondary feature and moderation on paid plans. PostoBox puts moderated Q&A at the centre of the event and includes it on every plan.
Read the full PostoBox vs Poll Everywhere comparison
8
PostoBox vs Kahoot!
Game-based quizzes · Oslo, Norway; taken private in 2024
Kahoot! is the best-known game-based quiz platform, sold to businesses as Kahoot! 360, with polls, word clouds and Q&A inside presentations.
Best for: Training, onboarding and team-building sessions where competitive quizzes are the main event.
Why choose PostoBox
Kahoot! is the pick for quiz games, and its Q&A only starts on paid plans. PostoBox is the professional choice for moderated audience Q&A, with no game layer unless you add one.
Read the full PostoBox vs Kahoot! comparison
9
PostoBox vs Crowdpurr
Event trivia and games · Dayton, Ohio, USA
Crowdpurr runs live trivia, bingo, social walls and prize draws for events, with sponsor ads on attendees' phones.
Best for: Gala dinners, parties and fundraisers that want trivia and bingo for big crowds.
Why choose PostoBox
Crowdpurr is for entertainment and has no true audience Q&A. PostoBox is for the content of your event: upvoted, moderated questions, polls and questionnaires.
Read the full PostoBox vs Crowdpurr comparison
10
PostoBox vs Whova
All-in-one event management · San Diego, USA (founded 2012)
Whova is an all-in-one event management platform with registration, an event app, agenda, exhibitors and session Q&A and polls.
Best for: Multi-day conferences that want one vendor for registration, the event app and attendee networking.
Why choose PostoBox
Whova runs the whole conference, and attendees must sign in to use it. PostoBox focuses on the session itself: anyone in the room can ask and vote from a QR code in seconds.
Read the full PostoBox vs Whova comparison
11
PostoBox vs DialogLoop
Event engagement toolkit · DialogLoop, Inc., Calgary, Canada
DialogLoop is a modular audience engagement toolkit where Q&A, moderation, polls, surveys and branding are bought as separate modules.
Best for: Organisers who want an on-premise option, a choice of data location or a per-attendee whitelist.
Why choose PostoBox
DialogLoop sells each capability as a separate module. PostoBox includes moderated Q&A, polls, questionnaires and branding together on every plan.
Read the full PostoBox vs DialogLoop comparison
12
PostoBox vs Trivia Anywhere
Trivia and party games · Small independent US product
Trivia Anywhere is a game-first tool for trivia, bingo and Wheel of Words, with Q&A and polls as extra game types.
Best for: Casual events and parties that mainly want trivia and bingo.
Why choose PostoBox
Trivia Anywhere is built for games, with Q&A as an add-on. PostoBox is built for event content, with questionnaires, external moderators and a branded hub.
Read the full PostoBox vs Trivia Anywhere comparison
13
PostoBox vs Particify
Classroom response system · Particify GmbH, Gießen, Germany; successor to open-source ARSnova
Particify is a German classroom response system for teaching and training, with polls, quizzes, flashcards and Q&A.
Best for: Universities that want German hosting, an on-premise option and LMS integration.
Why choose PostoBox
Particify is a solid choice for German lecture halls. PostoBox is designed for events, with your organisation's branding on every plan and an open API.
Read the full PostoBox vs Particify comparison
14
PostoBox vs Dory
Simple meeting Q&A · Built by Fluxon, San Francisco, USA
Dory is a simple Q&A tool for meetings, with upvoting, anonymous questions, domain-restricted private events and one live poll at a time.
Best for: Internal team meetings that need private, domain-restricted Q&A.
Why choose PostoBox
Dory keeps Q&A simple and saves pre-moderation for Enterprise. PostoBox includes pre-moderation, branding, polls and questionnaires on every plan.
Read the full PostoBox vs Dory comparison
15
PostoBox vs QuestionPro LivePolls
Live polls and quizzes · QuestionPro Inc., USA
QuestionPro LivePolls runs live polls, quizzes and trivia, with a Live Feed for open text and AI sentiment summaries.
Best for: Presenters who want free gamified polls and AI analysis of open-text answers.
Why choose PostoBox
LivePolls has no moderation queue or true Q&A. PostoBox gives you upvoted, moderated audience questions with a big-screen display, plus polls and questionnaires.
Read the full PostoBox vs QuestionPro LivePolls comparison
16
PostoBox vs StreamAlive
Chat-powered engagement · WordsWorth Tech Inc., New York, USA
StreamAlive turns the chat in Zoom, Teams, Meet or a livestream into polls, word clouds, maps and wheels, with no second screen.
Best for: Virtual sessions and webinars where everyone is already in the meeting chat.
Why choose PostoBox
StreamAlive shines in online meetings, but its Q&A is a chat inbox without upvoting. PostoBox is built for in-person and hybrid audiences who ask and vote from their phones.
Read the full PostoBox vs StreamAlive comparison
17
PostoBox vs ClassPoint
PowerPoint add-in for classrooms · Inknoe Pte Ltd, Singapore
ClassPoint is a Windows PowerPoint add-in that adds quizzes, polls, gamification and an AI quiz generator to lessons.
Best for: Teachers who present from PowerPoint on Windows.
Why choose PostoBox
ClassPoint is a classroom PowerPoint add-in whose live Q&A is reserved for its top plan. PostoBox works from any browser on any device, with moderated Q&A on every plan.
Read the full PostoBox vs ClassPoint comparison
18
PostoBox vs Polly
Slack and Teams engagement · Seattle, USA (founded 2015)
Polly runs polls, pulse surveys, standups and Q&A inside Slack and Microsoft Teams.
Best for: Remote and hybrid teams that work in Slack or Teams all day.
Why choose PostoBox
Polly works when everyone is inside your Slack or Teams workspace. PostoBox works for any audience in any room: guests, customers and the public join from a QR code.
Read the full PostoBox vs Polly comparison

Try moderated Q&A at your next event

Create an event, share the QR code and put the best questions on the big screen. Moderation, external moderators and your branding are included.

Create your free account

Frequently asked questions

What is the best Slido alternative for live events?

If you run live events and want moderated audience Q&A under your own brand, PostoBox includes a moderation queue, external moderators and custom branding on every plan, while Slido keeps moderation and branding for its paid Professional tier. If your team lives in Webex, Teams or PowerPoint and needs deep integrations, Slido remains a strong fit.

Which live Q&A tools include moderation on the free plan?

In our October 2026 review, PostoBox, Pigeonhole Live, Particify and Trivia Anywhere include a Q&A moderation queue on their free plans. Slido, Mentimeter, AhaSlides, Vevox, Wooclap and Poll Everywhere offer Q&A moderation on paid plans only.

Do attendees need to download an app to ask questions?

Not with most tools. PostoBox, Slido, Mentimeter, Pigeonhole Live, AhaSlides, Wooclap and Crowdpurr all work in a phone browser through a link or QR code. Whova attendees sign in to its app or web portal, and Polly works inside Slack or Microsoft Teams.

Which tool should I pick for quizzes and games?

Kahoot!, Crowdpurr and Trivia Anywhere are built around quizzes, trivia and games. PostoBox focuses on the content of your event: upvoted and moderated Q&A, live polls and questionnaires shown on the big screen.

How did you compare these tools?

We read each vendor's own product, pricing, security and help pages, then had every profile checked a second time against the live websites in October 2026. Features change, so each comparison links to its sources and shows when it was last reviewed.

Spotted something out of date? Email support@postobox.app and we'll fix it.

Your audience has questions. Give them a voice.

Join from any phone, no app needed. Moderate, brand and present it all from PostoBox.