Everything you need to deliver a great conference

Clowdr is an all-in-one solution for your next virtual conference. We know how much work it is to organise a conference. Clowdr is designed to make your conference platform 'just work' - so that you can concentrate on the things that really matter.

Advanced scheduling

Clowdr supports the complex, multi-track conference programs common in large academic conferences.

Video rooms

Attendees can create ad-hoc video breakout rooms at the click of a button.

Text chat

A familiar and interactive chat experience. Have a rich conversation with polls, Q&A, emoji and more.

Audio-visual production

Our end-to-end video production workflow seamlessly combines pre-recorded videos with live presentations, panel sessions and Q&A.

Attendee networking

Get your attendees talking with shuffle spaces, a way to create spontaneous group conversations.

Sponsor booths

Create custom video booths for sponsors and exhibitors at your conference.

Exhibition hall

Build a virtual exhibition hall to show posters or an important collection of conference items.

Content management

Clowdr helps you gather and manage all the content at your conference, including papers, abstracts, links and videos.

Custom homepage

Welcome attendees to your conference with a custom homepage.

Expert support

Our experienced team is ready to make your conference a success.

We'd love to show you around!

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Trusted by thousands

ICSE 2020

The International Conference on Software Engineering chose Clowdr to support a virtual conference for 1500 academic and professional engineers.

July 2020

ICFP 2020

Clowdr was used by 1300 attendees at the International Conference on Functional Programming.

August 2020


Over 900 attendees used Clowdr to attend the ACM SIGPLAN conference on Systems, Programming, Languages, and Applications: Software for Humanity.

November 2020

FPGA 2021

FPGA 2021 made use of Clowdr's advanced video broadcast capabilities to deliver content to 500 attendees.

February 2021

and many more!

Good call on Clowdr – I have joined so many virtual conferences with fancy platforms and this is by far my favorite. Pretty easy to navigate and very straight forward – just what these types of academic conferences need.

- sponsor at CSCW 2020

A community-owned platform

Clowdr CIC is a social enterprise dedicated to making virtual conferences better for everyone.

All improvements we make to Clowdr become part of the open source platform that anybody can use freely.

Interested in using Clowdr?

There are lots of ways to use Clowdr. Most conferences choose to use our fully hosted 'click-and-go' solution. But you can also run Clowdr yourself at no cost.

Discover our packages


© Clowdr CIC 2021

Clowdr is a social enterprise dedicated to creating sustainable, inclusive and engaging conferences.

Clowdr is a UK Community Interest Company, number 12984216.

Clowdr was initially made possible thanks to support by the US National Science Foundation under awards CCF-2035003, CCF-2035101 and CCF-203500 and support from Twilio.org.