Events startup ecosystem
We track 947 organisations in this sector across 6+ countries.
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Events results
Offsec Warsaw Chapter 0x04
The fourth meeting of the OffSec Warsaw chapter, hosted at JetBrains Mindspace Koszyki. The session covers offensive security, red teaming and application security, with talks on fuzzing and on drone security, followed by networking and open discussion for all experience levels.
Oh My Hack 2026
One of Poland's largest community cybersecurity conferences, returning for its 8th edition at the PGE Narodowy stadium. For security founders, pentesters, and infrastructure engineers it offers a large practitioner audience and a strong recruiting and networking surface in the Polish infosec scene.
OMR Festival 2026 (Late Sessions)
OMR runs satellite late-session events through the summer in Hamburg following the main May festival. The July edition focuses on AI in marketing, social commerce, and creator-economy monetization with smaller, more intimate audiences than the main event. Tickets from EUR 50.
ONS 2026
A major global energy forum at Stavanger Forum with 70,000+ visitors and 1,100+ exhibitors, including an ONS Scale-Ups programme connecting energy scale-ups with the industry. Relevant for energy-tech founders.
ONS Foundation
The ONS Foundation is a non-profit organization based in Stavanger, Norway, that has organized the biennial ONS global energy forum since 1974, originally focused on offshore North Sea oil and gas. It has evolved into a convener of global discussions on geopolitics, energy security, and the energy transition, attracting over 70,000 visitors from approximately 100 countries every two years across 9 conference venues and 8 exhibition halls. The Foundation partners with institutions including the Munich Security Conference, CERAWeek, and Columbia University's Center on Global Energy Policy, and operates under the patronage of His Majesty King Harald V of Norway.
Open Banking Expo
Organiser of Open Banking Expo, the UK and Europe dedicated Open Banking, Open Finance and Smart Data event, alongside a global community, awards and content programme. The show convenes banks, fintechs, regulators and investors shaping data-driven financial services.
Open Banking Expo UK & Europe 2026
The UK and Europe's dedicated Open Banking, Open Finance and Smart Data show at the Business Design Centre in London. Four content stages plus a workshop theatre, an Innovation Zone and 40+ exhibitors bring together banks, fintech founders, regulators and investors shaping data-driven finance.
Open Conf 2026
An annual tech conference at the Dais Events center in Marousi, Athens, supported by the Greek software and IT sector including major companies, open communities, startups, hubs and research centers. The 2026 edition centers on AI-Native Engineering, Tech with Impact and Software Craftmanship, drawing 700+ attendees across talks, panels, mentoring and tech challenges.
Open Eyes Economy Summit 2026
A major international congress on responsible and sustainable economy and value-driven business. Relevant for climate, greentech, and impact founders looking to connect with ESG-minded corporates, public institutions, and mission-aligned investors.
Open Source Conference Luxembourg
Organiser of the Open Source Conference Luxembourg, a gathering of international Open Source Program Offices and related organisations. The conference exchanges experience on implementing and securing open-source software across the public sector, AI and large language models, cybersecurity, academia and humanitarian use.
Open Source Conference Luxembourg 2026 (October 2026)
A one-day conference at the Belval campus themed around leading by example in digital sovereignty, gathering international Open Source Program Offices and related organisations. Participants exchange experience on implementing and securing open-source software across the public sector, AI and large language models, cybersecurity, academia and humanitarian use.
Open Source Experience Brussels 2026
European-wide open-source business and technical conference in Brussels, bringing together 5,000+ OSS contributors, European corporate users of open source, and public-sector decision-makers. Program covers enterprise OSS strategy, supply-chain security, European digital sovereignty, and sustainable OSS funding models. Tickets EUR 200-500.
Open Source Summit Europe 2026 (Oct 2026)
Open Source Summit Europe is the Linux Foundation's premier vendor-neutral conference for the global open-source ecosystem, featuring keynotes, breakout sessions, and a Solutions Showcase. The 2026 edition is hosted in Prague, convening maintainers, developers, technologists, and community leaders shaping the future of open source, with co-located events on the preceding days.
OpenForum Europe
Advocacy organisation promoting open source, open standards, and open markets in Europe, particularly concerning public policy and digital infrastructure. Organises the EU Open Source Policy Summit.
OpenSlava 2026
The 14th edition of OpenSlava, Accenture's free conference on emerging technologies and open source held in Bratislava. The 2026 programme focuses on AI in the era of intelligent agents, with hands-on labs on day one and main-stage sessions on day two. The hybrid English-language event draws business and technology leaders, architects, software developers, students and educators from across Central Europe.
Øredev 2026
Øredev is one of Europe's premier developer conferences, held annually in Malmö since 2005 and celebrating its 20th edition in 2026. The three-day program spans the whole software development process, including backend, frontend, AI, architecture, security, and team culture, drawing developers, architects, and tech leads from across the Nordics. A strong hiring and learning venue for engineering-heavy startups in the Öresund region.
Oslo Business Forum
Norwegian organizer of the Oslo Business Forum, founded by Christoffer Omberg and Marius Roed Wang to empower leaders to change the world. The annual conference brings roughly 3,000 leaders, a majority of them C-level, to Lillestrom for keynotes from globally recognized authors, executives, and thinkers on leadership and innovation.
Oslo Business Forum 2026
Annual leadership and business conference bringing around 3,000 leaders, a majority of them C-level, to Hagemessen in Lillestrom under the 2026 theme 'The Human Edge'. The programme features roughly 23 globally recognized speakers including Steven Bartlett, Angela Duckworth, and Seth Godin on leadership, performance, and innovation.
Oslo Innovation Week 2026
Norway's largest innovation festival spanning a full week with 100+ events across Oslo, organized by Innovation Norway and the City of Oslo. Covers cleantech, ocean tech, healthtech, and fintech with 10,000+ participants. Most events are free or low-cost, making it highly accessible.
PaintExpo 2026
World's leading trade fair for industrial coating technology, held in Karlsruhe with 500+ exhibitors and 10,000+ trade visitors. Covers surface treatment, powder coating, automation, and quality control. Day tickets cost about EUR 30-50. Relevant for materials science, robotics, and industrial automation startups serving the manufacturing sector.
