OpenSession vs Sessionize
Sessionize is a mature, hosted platform for managing conference content. OpenSession
covers the same core program workflow with open-source software that runs in your own
Cloudflare account.
At a glance
| OpenSession | Sessionize | |
| Price | Free under the MIT license | Free for eligible community events; $499 plus tax per professional event |
| Hosting | Your Cloudflare account | Managed SaaS |
| Source code | Open source | Closed source |
| Data ownership | Your D1 database and R2 bucket | Stored in Sessionize |
| Setup | Self-host and configure Google OAuth | Create an account and activate an event |
| Best fit | Teams that want control and no license fee | Teams that want a mature hosted product |
Sessionize also offers bulk pricing for organizations that run five or more events
per year. Its free community license is limited to qualifying open, volunteer-run events.
Program workflow
Both products support the main path from an open call for speakers to a published
schedule. The main difference is how much control the organizer has over the software
and infrastructure.
| Capability | OpenSession | Sessionize |
| Call for speakers | Versioned MDX forms with conditional fields | Hosted form builder with custom fields |
| Multiple speakers | Co-speakers and linked profiles | Co-speakers and agent submissions |
| Evaluation | Yes, Maybe, No, ratings, comments, and form-backed rounds | Stars, Yes/No, comparison mode, and anonymous evaluation |
| Decisions | Accept and decline queues with explicit notification | Status queues and a separate Inform Speakers workflow |
| Schedule | Rooms, time slots, service sessions, and conflict warnings | Drag-and-drop builder, service sessions, and collision detection |
| Speaker workspace | Portal forms, tasks, files, and completion tracking | Speaker Dashboard and shared speaker profiles |
| Decision mail, group mail, reminders, outbox history, and ICS | Decision mail, group mailing, and email history | |
| Publishing | Agenda and speaker embeds plus JSON, XML, and ICS feeds | Embeds, JSON and XML data, and an attendee app |
Where OpenSession is stronger
- Source access: inspect, change, and deploy the complete application.
- Data control: event records and uploaded files remain in your Cloudflare account.
- Form versioning: each submission stays attached to the exact MDX form version the speaker completed.
- Speaker tasks: assign form-backed or manual onboarding work and track completion.
- Predictable cost: there is no per-event OpenSession license fee.
OpenSession is a good fit when ownership and customization matter more than a managed
service. It does require someone to deploy and maintain the Cloudflare resources.
Where Sessionize is stronger
- Managed service: organizers can start without deploying infrastructure.
- Evaluation modes: comparison ranking and anonymous review are built in.
- Attendee app: Sessionize creates a mobile and web event app from the schedule.
- Audience feedback: attendees can rate sessions through time-limited QR check-ins.
- Promotion: social banner generation is included.
- Maturity: the organizer workflow has been used across many event types for years.
Sessionize is a good fit when speed and managed operations matter more than source
access or direct database ownership.
Pricing details
Sessionize lists a $499 plus tax professional license for one event occurrence. It
provides a free license for eligible community events that are open, free to attend, and
run by unpaid organizers. Discounts may be available for low-cost community events.
OpenSession has no software license fee. Cloudflare usage can still create charges if
an event exceeds the included service limits.
Choose the right tool
Choose OpenSession when you want open-source software, direct control of event data,
versioned MDX forms, and a reusable self-hosted system.
Choose Sessionize when you want a hosted service, attendee-facing applications,
audience feedback, social promotion tools, and no infrastructure work.