Sessionize
Sessionize is a cloud-based SaaS platform for conference and event management, covering call for papers, speaker evaluation, scheduling, communications, and attendee web apps. Operated by Croatia-based Web-ideja Ltd., it serves over 30,800 event organizers across 137 countries via a freemium and per-event license model.
- Company typePrivate
- Founded2016
- HeadquartersZagreb, Croatia
- Headcount1–10
- GTM typeB2B
- OfferingSoftware
What Sessionize does
Sessionize, operated by Croatia-based Web-ideja Ltd., is a cloud-based SaaS platform that supports the full conference content lifecycle, from call for papers and speaker evaluation through drag-and-drop schedule building, speaker communications, and attendee-facing delivery via single-line HTML embeds and a Progressive Web App. Functionally the platform comprises integrated modules for Call for Papers management, collaborative session evaluation (including Yes/No, star rating, blind/anonymous and comparison-based modes), a visual schedule builder with room and multi-day support, unlimited mailings to accepted speakers, and a public Speaker Directory of 81,000+ profiles. A read-only API exposes event data in JSON, XML and iCalendar formats and integrates with Microsoft Power Apps, Power Automate and Logic Apps through an M365 Connector.
The business model is a hybrid freemium and per-event license: a free Community tier for qualifying free community events, a Professional tier at $499 USD per event occurrence (no credit card required for testing, fully functional trial mode), and a Bulk/Enterprise tier with custom pricing and prepaid activation codes for agencies and corporations running 5+ events per year. Go-to-market is self-serve product-led growth with no sales involvement for SMB and individual organizers; enterprise deals are handled through direct contact. The platform is used in 137 countries and has hosted 11,500+ events with 294,000 speakers and 1,111,000+ session submissions over time. Key infrastructure and vendor integrations include Microsoft Azure and Amazon Web Services for EEA-resident data storage, Postmark for email delivery, Paddle as merchant of record, Freshdesk for support, Byteplant for email validation, and OAuth login via Microsoft, Google, Twitter/X and Facebook.
Notable enterprise customers span developer conferences, universities and industry events, including Microsoft, JetBrains, droidcon, NDC Conferences, DeveloperWeek, Google Developer Groups, webflow, .Net Foundation, the University of California, Ebner Media Group, ExpertsLive and The Insights Association. The company is privately held, bootstrap-funded (no external investors identified), GDPR compliant, and operates with a small team of 1–10 employees out of Zagreb, Croatia, where it was founded in 2016.
Sessionize firmographics
Firmographics- Name
- Sessionize
- Legal name
- Web-ideja Ltd.
- Website
- https://sessionize.com
- Company type
- Private
- Founded year
- 2016
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Sessionize is a cloud-based SaaS platform for conference and event management, covering call for papers, speaker evaluation, scheduling, communications, and attendee web apps. Operated by Croatia-based Web-ideja Ltd., it serves over 30,800 event organizers across 137 countries via a freemium and per-event license model.
- Ownership category
- akta.pro rank
Sessionize industry classification
Industry- Product category
- Event Management Software
- NAICS
- Convention and Trade Show Organizers (56192)
- SIC
- Services-Prepackaged Software (7372)
- akta.pro primary industry
- Abstract, Speaker & Session Management Systems (THAHAFAI)
- akta.pro secondary industry
- Virtual/Hybrid Conference Production & Platform Management (THAHACAM)
Keywords
Where Sessionize is headquartered
LocationHeadquarters
- HQ city
- Zagreb
- HQ country
- Croatia
- HQ region
- Europe
Markets served
Sessionize business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Technology or R&D, Personnel, Infrastructure, Marketing or Sales, Operations
Revenue model
- Professional Event License: Paid tier at $499 USD + tax valid for one event occurrence. Includes priority email support. No credit card required for trial mode.
- Bulk/Enterprise Licensing: Custom pricing for agencies and corporations managing 5+ events per year. Purchase activation codes in advance and use them when needed.
- Community Events: Free tier for qualifying free community events with backlinking appreciated. Not valid for internal, private, promotional, marketing, profit and commercial events.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Freemium | Others | Free tier for community events with basic features |
| One time/ perpetual license | Pay-as-you-go | Standard paid tier for individual event organizers |
| Subscription | Multi-year contract | Custom enterprise pricing for high-volume users |
Go-to-market motion1 record
Distribution channels3 records
Marketing channels7 records
Sessionize product offering
Product offeringCore offering
Sessionize is a cloud-based SaaS platform that manages the complete conference content lifecycle, from call for papers and speaker submissions through collaborative session evaluation, drag-and-drop schedule building, speaker communication, and attendee-facing mobile/web apps. It serves conference organizers globally with a free community tier, a $499 Professional tier per event, and custom Bulk pricing for agencies and corporations managing multiple events.
Product overview
Sessionize is a cloud-based conference management platform designed to streamline the entire event organization workflow from call for papers through schedule publication. The core platform consists of integrated modules for Call for Papers management, Session Evaluation (supporting Yes/No, star rating, and comparison modes), Schedule Building with drag-and-drop interface, Speaker Communication, and Embed/Display capabilities. Supporting products include a Mobile and Web App (PWA) for attendees, Public Speaker Profiles and Speakers Directory for speaker discovery, Social Banners for event promotion, Data Export functionality, and a Developer API for programmatic data access. The platform is operated by Web-ideja Ltd. and hosts over 11,500 events with 294,000 speakers and 1,111,000 sessions submitted to date.
Differentiator
Problem solved
Functional benefit
Products and services
- Call for Papers / Call for Speakers Management Cloud-based platform module for managing conference call for papers and speaker submissions. Enables custom categorization, submission forms, and speaker invitation workflows for event organizers.
- Session Evaluation System Collaborative session evaluation tool allowing content team members to vote on submissions, supporting multiple evaluation modes including Yes/No, star ratings, and comparison-based ranking.
- Schedule Builder Drag-and-drop schedule building tool for arranging sessions into rooms and time slots. Features include session coloring, plenum sessions, service sessions, and multi-day event support.
- Speaker Communication Tools Communication platform for notifying speakers about acceptance, rejection, scheduling details, and event information. Includes unlimited mailings to accepted speakers for announcements, surveys, and travel arrangements.
- Embed / Schedule Display Read-only embeddable views of event schedules including schedule grid, list of sessions, list of speakers, and speaker wall, using single-line HTML code for integration into external websites.
- Mobile and Web App Progressive Web App (PWA) for events that attendees can install on mobile devices or access via web browser. Includes schedule viewing, personal schedule building, and session favoriting.
- Speakers Directory Public directory of 81,000+ speaker profiles searchable by event organizers and attendees. Part of the broader Sessionize platform and creates network effects through speaker discoverability.
- Sessionize API Read-only API providing access to event data including sessions, speakers, schedules, and rooms in JSON, XML, and iCalendar formats. Supports unlimited endpoints per event with custom settings and is used for embedding schedule grids and building third-party integrations.
Quantifiable outcome
- Event organizers launch CFP on average 156 days (~5 months) ahead of events and keep it open for 59 days (~2 months)
- +1 more outcomes
Companies that use Sessionize
Customer profileNamed customers12 records
Segments4 records
Ideal customer profiles3 records
Sessionize technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration12 records
Feature13 records
Sessionize partnerships and signals
Strategic signalPartnerships
Six partnerships are on record, tiered core infrastructure and supporting.
- Microsoft Azurecore infrastructurePrimary cloud infrastructure provider for running and storing Sessionize service data. Always applicable - used for core service operations. Data stored within EEA for compliance.
- Amazon Web Servicescore infrastructureCloud infrastructure provider supplementing Azure for running and storing Sessionize service data. Always applicable - used for core service operations. Data stored within EEA for compliance.
- Postmark (AC PM LLC)supportingEmail delivery service handling the delivery of email messages from Sessionize to organizers and speakers. Used when sending emails (opt-out available). Data stored in USA.
- PaddlesupportingMerchant of record processing online payments. Handles transaction processing including personal data required for payment. Only email address is shared with Paddle. Data stored in UK/USA.
- Freshworks (Freshdesk)supportingSupport ticket handling service using Freshdesk. Stores contact data (name and email) when users contact support. Data stored within EEA.
- ByteplantsupportingEmail validation service used to validate email addresses when using public forms and classic registration. Data stored in USA.
Scale indicators7 records
Recent moves6 records
Expansion highlights5 records
Sessionize competitors and assessment
Company assessmentBroad incumbents
- Eventbrite: Eventbrite is a large-scale event ticketing and management platform serving millions of organizers. While its core is ticketing and registration, it overlaps with Sessionize at the event-management layer for community and professional event organizers.
- Cvent: Cvent is an enterprise event management suite spanning registration, venue sourcing, attendee engagement, and on-site solutions. It represents the bundled-incumbent threat to Sessionize among large corporate event programs.
- Bizzabo: Bizzabo is an event experience platform offering registration, agenda, networking, and analytics. It competes with Sessionize for mid-market and enterprise organizers seeking an integrated event stack.
- Whova: Whova is a broader event management platform offering registration, agenda, mobile app, and networking features. It competes with Sessionize on schedule/agenda and attendee engagement while operating across a wider feature footprint.
- Hopin: Hopin is a virtual and hybrid event platform covering registration, stage production, and networking for online events. It overlaps with Sessionize for organizers running virtual or hybrid conference formats.
Direct peers
- Sessionboard: Sessionboard is a speaker and call-for-papers management platform tailored for association and corporate events. It competes head-to-head with Sessionize in the speaker submission, evaluation, and selection workflow.
- PaperCall: PaperCall is a focused call-for-papers platform that lets speakers propose talks and organizers manage submissions. It overlaps directly with Sessionize's CFP submission and review functionality.
- Sched: Sched is a direct competitor providing event scheduling, speaker management, and attendee engagement for conferences and trade shows, with very similar drag-and-drop schedule builder, speaker profiles, and free/paid tiers. It is the closest functional peer to Sessionize's all-in-one CFP-and-scheduling positioning.
Emerging players
- Pretalx: Pretalx is an open-source conference management tool covering call for papers, scheduling, and speaker management. It is comparable to Sessionize as a niche event-content platform, with a more technical/open-source orientation and growing enterprise uptake.
- Indico: Indico (originally from CERN) is an open-source event management platform offering registration, call for abstracts, and scheduling. It is comparable to Sessionize primarily in academic and scientific conference use cases.
Market position
Strengths5 records
Weaknesses4 records
Competitive moat4 records
Key risks5 records
Key highlights6 records
Customer concentration
Sessionize social profiles
Digital presenceSessionize compliance and trust
Trust signalCompliance1 record
Sessionize financial estimates
Financial estimateRevenue estimate
Valuation estimate
Sessionize leadership team
Management profileNumber of profiles
Profiles1 record
Sessionize funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Sessionize M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Sessionize
What does Sessionize do?
Sessionize is a cloud-based SaaS platform that manages the complete conference content lifecycle, from call for papers and speaker submissions through collaborative session evaluation, drag-and-drop schedule building, speaker communication, and attendee-facing mobile/web apps. It serves conference organizers globally with a free community tier, a $499 Professional tier per event, and custom Bulk pricing for agencies and corporations managing multiple events.
Is Sessionize a public or private company?
Sessionize is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Sessionize founded?
Sessionize was founded in 2016. It employs 1 to 10 people.
Where is Sessionize based?
Sessionize is headquartered in Zagreb, Croatia, in the Europe region.
How does Sessionize make money?
Three revenue lines are on record. Professional Event License is the primary driver. The others are bulk/Enterprise Licensing and community Events.
Who are Sessionize's main competitors?
Broad incumbents on record are Eventbrite, Cvent, Bizzabo, Whova and Hopin. Direct peers are Sessionboard, PaperCall and Sched. Emerging players are Pretalx and Indico.
Does Sessionize have an API?
Yes. Sessionize offers read-only API access to event data in JSON, XML, and iCalendar formats. Developers can access session data, speaker information, schedule details, and room information through the API. Multiple endpoints can be configured per event with custom settings and options. The API is used for embedding schedule grids, session lists, speaker lists, and speaker walls on websites. All embed and API requests are cached for up to five minutes. Developer documentation is at sessionize.com/playbook/developers/api.
What industry is Sessionize in?
Sessionize's product category is Event Management Software. Its primary akta.pro industry code is THAHAFAI, Abstract, Speaker & Session Management Systems, with a secondary code of THAHACAM, Virtual/Hybrid Conference Production & Platform Management. Its NAICS code is 56192 and its SIC code is 7372.