European & open-source Developer tools

A

Aiven

Managed open-source data infrastructure (PostgreSQL, Kafka, OpenSearch and more) across clouds.

A French integration platform that facilitates data exchanges within information systems, offering resilient web API client…

B

Betty Blocks

Dutch no-code app development platform from Alkmaar with visual drag-and-drop building, role-based access and on-premise or…

B

Budibase

UK-based open-source low-code platform for internal tools and admin panels, connecting to existing databases with self-hosting…

C

Codeberg

Non-profit, community-run Git hosting powered by open-source Forgejo, based in Germany.

F

Forgejo

A self-hosted, lightweight software forge for collaborative software development, offering repository hosting and project…

C

Codesphere

This platform unifies development, deployment, and management of applications, offering a cloud IDE and DevOps tools. It aims to…

C

Convertigo

French open-source low-code platform for enterprise mobile and web apps, combining visual development with a full-stack server…

D

Deepnote

Prague-built collaborative data science notebook (Apache 2.0) that works as a Jupyter replacement with AI features, SQL blocks…

G

Giskard

An AI red teaming and LLM security platform that helps detect vulnerabilities, improve LLM security, and safeguard AI systems…

K

Kornia

A differentiable computer vision library that offers a wide array of differentiable image processing and geometric vision…

Μ

µTask

An automation engine that models and executes business processes declared in YAML, designed for cloud environments.

R

Rerun

Rerun is an SDK and toolbox for visualizing, querying, and streaming multimodal data that changes over time, used by engineers…

S

scikit-learn

A Python module for machine learning that provides simple and efficient tools for predictive data analysis, built on top of SciPy…

Automated, cloud-based development environments that spin up straight from a Git repo.

H

Hyperping

This tool provides uptime monitoring, status pages, and on-call alerting. It also offers DNS monitoring to detect record changes…

J

JetBrains

Prague-based maker of IntelliJ IDEA, PyCharm, WebStorm and other IDEs and developer tools.

K

Kestra

An open-source, event-driven orchestration platform for managing data, AI, and infrastructure workflows declaratively in code…

M

Manjaro

German Arch-based Linux distribution that makes Arch approachable with a graphical installer, hardware detection and multiple…

M

Mendix

Dutch enterprise low-code platform (Siemens-owned since 2018) for building multi-experience apps at scale, serving 4,000+…

N

NixOS

Linux distribution built on the Nix package manager where the whole system is declared in Nix expressions, enabling atomic…

O

Oh Dear

This tool provides website monitoring services, including uptime and performance checks, SSL certificate monitoring, and broken…

O

Orkestr

This platform unifies finance, operations, inventory, and HR into a single intelligent system for businesses. It aims to…

O

Ory

Open-source identity infrastructure for authentication, authorization and API access control.

P

PageKite

A reverse proxy tool that creates a connection between a local server and the public Internet, assigning proper domain names to…

P

Prisma

Open-source next-generation ORM and data toolkit for Node.js and TypeScript.

P

Proxmox VE

Open-source server-virtualisation platform combining KVM virtual machines and Linux containers with web management.

S

SeaTable

German no-code database platform from the Seafile team blending spreadsheet ease with database power, with self-hosted and…

S

Softr

Berlin no-code platform building client portals, internal tools and directories on top of Airtable, Supabase, Notion and other…

S

SonarQube

Continuous code-quality and security analysis across many languages, by Swiss SonarSource.

S

SUSE Linux

German enterprise Linux company from Nuremberg (1992) offering SUSE Linux Enterprise Server and openSUSE — one of the oldest…

synQup is a cloud-based integration platform (iPaaS) that centralizes and manages data streams across an IT landscape…

French no-code platform pairing a visual Smart Tables database with an app builder, automation and native Mistral AI, hosted in…

T

Tolgee

An open-source localization tool that simplifies the translation of software and applications into different human languages…

T

Traefik

French open-source cloud-native reverse proxy and load balancer (Traefik Labs, Lyon) that auto-discovers services in Docker and…

U

Unleash

Norwegian open-source feature flag platform for progressive delivery — canary releases, A/B testing and rollouts — with SDKs for…

U

Uptimia

Uptimia is a website monitoring service that checks the uptime of various services like HTTP, HTTPS, Ping, DNS, UDP, TCP, and…

W

Weaviate

Open-source, AI-native vector database for semantic search and RAG applications.

W

WeWeb

French no-code frontend builder from Paris for building responsive web apps visually while connecting to any backend such as…

Z

ZITADEL

Open-source identity and access management for authentication, single sign-on and user management.