What Koliseo does

Koliseo Event Solutions S.L. operates a web-based SaaS platform that unifies ticket sales, call for papers, agenda management, and on-site ticket validation into a single product for professional event organizers. The platform is built on a React frontend, Java backend, and Firebase/Firestore database hosted on Google Cloud Platform, with an Android-based Access Control app supporting offline ticket scanning, multi-device synchronization, and ZPL thermal badge printing. Authentication is delegated via Google, Facebook, and Microsoft OAuth, and payments are processed through a native Stripe integration with automatic invoicing. The company also publishes a portfolio of open-source React components under the koliseoapi GitHub organization and maintains a developer-focused engineering blog.

The company's customer base is concentrated in the European tech-conference vertical, with named customers including TEDx, Commit Conf, JS Day, Frontfest, Madrid Hub, and Conferencia Agile Spain. Per the homepage, the platform has supported 129 events, 29k+ registered users, 11k+ tickets sold, and 5k+ sessions cumulatively. Koliseo employs 1–10 people, is bootstrapped with no external funding, and is led by co-founders Nacho Coloma (Berlin) and Carlos Coloma (Tenerife). The platform went through a major architecture rebuild in 2020 after a public hiatus.

Revenue is generated through two streams: tiered SaaS subscriptions (Basic free, Starter at €69/month or €690/year, Professional at €249/month or €2,490/year, plus Enterprise on request) and a per-ticket transaction fee of 4% + €0.03 (capped at €25) on paid tickets processed via Stripe. Free tickets are exempt. Distribution is product-led and self-serve via koliseo.com, supplemented by community engagement through open-source, Twitter/X, and conference presence in European tech events.

Name

Koliseo

Legal name

Koliseo Event Solutions S.L.

Website

https://koliseo.com

Company type

Private

Founded year

2011

Operating status

Operating

Headcount range

1–10 employees

Short description

Koliseo is a bootstrapped SaaS platform that unifies ticket sales, call for papers, agenda management, and on-site ticket validation for professional event organizers, primarily serving European tech conferences and community events.

Ownership category

akta.pro rank

Product category

Event Management Software

NAICS

Convention and Trade Show Organizers (561920)

SIC

Services-Computer Programming, Data Processing, Etc. (7370)

akta.pro primary industry

Primary Ticketing Platforms & Box Office Systems (MPAGAJAA)

akta.pro secondary industries

Conference & Trade Show Registration Platforms (THAHAFAB), Access Control, Credentialing & Entry Management (Scan/Turnstiles/RFID) (MPAGAJAG)

Keywords

• Event management software
• Event ticketing platform
• Call for papers
• Conference agenda management
• Access control software

Headquarters

HQ city

Berlin

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Infrastructure, Marketing or Sales, Operations

Revenue model

1. Subscription Plans: Tiered subscription model with Basic (free), Starter (€69/month or €690/year), and Professional (€249/month or €2,490/year) plans providing increasing event capacity, attendee limits, and feature access.
2. Transaction/Ticket Processing Fee: 4% of ticket price plus €0.03 per ticket for paid tickets, capped at €25 per transaction. Free tickets are exempt from fees. Collected via integrated Stripe payment processing.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

Koliseo is a unified SaaS event management platform that lets event organizers sell tickets, run call-for-papers (CFP) submissions, compose and publish the conference agenda, and validate tickets at the gate — all from a single tool. The platform integrates Stripe for paid ticket processing and is complemented by a native Android Access Control app for on-site QR-code ticket validation and badge printing. A free tier plus paid Starter and Professional subscriptions are offered, alongside an Enterprise tier.

Product overview

Koliseo is a unified event management platform that combines ticket sales, call for papers, and agenda management into a single integrated tool. The core Koliseo Platform serves as the central product, with specialized modules including Agenda Management, Call for Papers, Insights analytics, and Automatic Invoices powered by Stripe. The ecosystem also includes Koliseo Access Control, a native Android app for on-site ticket validation and badge printing. Additional modules cover Discounts, Ticket Extras, Questions & Answers for attendee data collection, and Feedback for session ratings. The company also publishes open source React components under the koliseoapi GitHub organization.

Differentiator

Problem solved

Functional benefit

Products and services

• Koliseo Platform Unified SaaS event management platform combining ticket sales, call for papers, agenda building, attendee management, insights/analytics, automatic invoicing, discounts, ticket extras, custom questions, feedback collection, and badges in a single tool. Target customers are event organizers running conferences, developer events, and corporate events.
• Koliseo Access Control Native Android application for on-site event ticket validation. Supports QR-code scanning, offline validation with sync, lead collection, and badge printing to ZPL-compatible thermal printers over a local network. Used by event staff at the gate.
• Koliseo Agenda Widget and Open Source Components Open-source React components published under the koliseoapi GitHub organization, including the koliseo-agenda widget (embeddable event agenda with filtering, favorites, ratings, and real-time speaker updates) plus libraries such as react-rug-menu, react-async-autocomplete, react-simple-tags-input, codemotion-badges, alt-ng (Flux), and react-moment-datetime. Targeted at developers who want to embed or extend Koliseo agenda functionality.

Quantifiable outcome

• 56% reduction in ticket fees compared to previous pricing model

Named customers6 records

Segments2 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration8 records

AI capability2 records

Feature7 records

Partnerships

Six partnerships are on record, tiered core.

• StripecoreTechnology or IntegrationStripe is integrated as the exclusive payment processing gateway for Koliseo. All paid ticket transactions are processed through Stripe, with proceeds deposited directly to event organizers' Stripe accounts. Koliseo charges a 4% platform fee on top of Stripe's transaction fees.
• Google OAuthcoreTechnology or IntegrationGoogle OAuth is one of the supported authentication providers enabling users to sign in to Koliseo using their Google account credentials.
• Facebook OAuthcoreTechnology or IntegrationFacebook OAuth is one of the supported authentication providers enabling users to sign in using their Facebook credentials.
• Microsoft OAuthcoreTechnology or IntegrationMicrosoft OAuth is one of the supported authentication providers enabling users to sign in using their Microsoft account credentials.
• Google Cloud PlatformcoreTechnology or IntegrationGoogle Cloud Platform services including Cloud Build for CI/CD, Cloud Storage for file storage, and other Google infrastructure services powering the Koliseo platform.
• Firebase/FirestorecoreTechnology or IntegrationFirebase/Firestore is used as the primary backend database for the Koliseo platform, storing event data, user information, and session content.

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Eventzilla: Eventzilla is a self-serve event registration and ticketing platform targeting small and mid-sized organizers, similar in scale, pricing model, and PLG motion to Koliseo's Starter/Professional plans.
• Bizzabo: Bizzabo offers an end-to-end event experience platform for conferences and corporate events, including registration, agenda, and onsite tools — directly comparable to Koliseo's integrated agenda + ticketing + validation stack at the mid-market and enterprise tier.
• Whova: Whova is an all-in-one event management platform with strong penetration in tech, academic, and association conferences — offering registration, ticketing, agenda, call for papers, mobile apps, and attendee engagement in a single SaaS, mirroring Koliseo's vertical integration thesis.
• EventMobi: EventMobi provides event apps, registration, and engagement tools to corporate and association events — overlapping with Koliseo's agenda and attendee-engagement modules and serving a similar mid-market organizer segment.
• Eventbrite: Eventbrite is the largest self-serve ticketing and event registration platform serving consumers and small/mid-market organizers globally — Koliseo's free tier and self-serve signup go head-to-head here on paid ticketing workflows and per-ticket fee economics.
• Hubilo: Hubilo is a virtual and hybrid event platform offering registration, content delivery, and engagement features — directly comparable to Koliseo's full-lifecycle positioning, especially after the post-pandemic pivot to hybrid events.
• Swapcard: Swapcard provides registration, agenda, networking, and lead retrieval for trade shows and conferences — comparable to Koliseo's call-for-papers, agenda, and ticketing modules, with a particular emphasis on B2B exhibitions and association events.

Broad incumbents

• RainFocus: RainFocus is an enterprise event management platform for large trade shows and conferences with deep integrations into marketing and CRM systems — competing for the high end of Koliseo's potential customer base as those events grow.
• Cvent: Cvent is a large incumbent providing event registration, venue sourcing, and event marketing for corporate and association events. It targets the same professional-event organizer buyer as Koliseo but at a much larger scale and price point, often competing for the same RFP.
• RingCentral Events (formerly Hopin): RingCentral Events (built on Hopin) is a broad event technology platform spanning registration, virtual venues, and hybrid event production — competing with Koliseo especially for hybrid/in-person tech conferences that now require integrated digital components.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/koliseoapi
• GitHubgithub.com/koliseoapi
• LinkedInlinkedin.com/company/koliseo

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Koliseo