Directory

Open Source startup ecosystem

Founders, investors, and support organizations active in Open Source.

Showing 10 of 866 entries.

Cloud Native Days France 2026

Paris, France · Event

Community-led cloud conference at CENTQUATRE-PARIS focused on practical engineering sessions over vendor marketing. Strong match for infrastructure startups and DevOps-first teams working on Kubernetes, platform tooling, and secure cloud operations.

EventEventsCloudDevToolsInfrastructureOpen SourceCybersecurity

Defguard

Warsaw, Poland · Startup

Open-source cybersecurity platform for zero-trust access, self-hosted VPN management, and identity controls. Defguard is known for integrating multi-factor authentication at WireGuard protocol level to support enterprise-grade security and privacy requirements.

StartupEarly StageCybersecurityZero TrustOpen Source

Devoxx France 2026

Paris, France · Event

Developer-first conference centered on software architecture, cloud systems, and modern engineering practices. Strong channel for DevTools and infrastructure startups building technical communities with senior engineers and CTOs.

EventEventsDeveloper ToolsJavaCloudSoftwareOpen Source

EU Open Source Policy Summit 2026

Brussels, Belgium · Event

Conference on open source policy, bringing together policymakers, industry leaders, and open source community members to discuss current trends and future directions in Brussels.

EventPolicyOpen SourceTechnologyEvents

FOSDEM 2026

Brussels, Belgium · Event

Free and open source software developers' conference, covering a wide range of topics and technologies. A major community-driven event for open source enthusiasts and professionals in Brussels.

EventOpen SourceSoftware DevelopmentTechnologyEvents

Mistral AI

Paris, France · Startup

Founded in April 2023 by former Google DeepMind and Meta AI researchers, Mistral AI has become one of Europe's most valuable AI startups. The company builds frontier large language models such as Mistral Large and Mixtral and follows an open-weight plus enterprise deployment strategy. Its products are used via API, cloud partners such as Microsoft Azure, and local deployments for regulated organizations requiring data control and model transparency. Le Chat is the company's conversational interface built on its model stack.

StartupLate StageAIGenerative AIOpen SourceEnterprise Software

OpenForum Europe

Brussels, Belgium · Event Organisator

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.

Event OrganisatorPolicyOpen SourceDigital InfrastructureEvents

Piotr Karwatka

Wroclaw, Poland · Angel Investor

Co-founder of Divante and managing partner at Catch the Tornado, Piotr is among Poland’s most active operator-turned-angels. After scaling and selling Divante, he helped build a venture-builder model focused on open source, composable commerce, and AI-first startups. Portfolio references include Ramp Network, Vue Storefront, and Rigby, alongside investments linked to major outcomes such as Callstack.

Angel InvestorPre-Seed to Series AComposable CommerceOpen SourceAI

Spring I/O

Barcelona, Spain · Event Organisator

Organizer of Spring I/O, a major European conference for the Java and Spring ecosystem.

Event OrganisatorEventsJavaDeveloper ToolsOpen Source

Tomasz Karwatka

Wroclaw, Poland · Angel Investor

Co-founder of Divante and managing partner at Catch the Tornado, Tomasz invests in high-growth software companies shaped by strong product and engineering culture. His strategy centers on composable commerce, open-source infrastructure, and AI-powered products. Notable portfolio examples include Ramp Network, Vue Storefront, and Rigby, with broader exposure to high-value exits in the Polish tech ecosystem.

Angel InvestorPre-Seed to Series AComposable CommerceOpen SourceDeveloper Tools