Companies
Every company jobctl has seen with an open posting.
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Elastic
Develops Elasticsearch and sells search, observability and security products built on it, as a managed cloud service or self-hosted.
audience:b2b model:opensource model:saas sector:devtools sector:security
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MongoDB
Document database platform, led by the managed cloud service Atlas, used to build applications combining operational data, vector search and streaming data.
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Canonical
Develops Ubuntu and sells enterprise support and subscriptions around open source infrastructure, including OpenStack, Kubernetes, IoT and security tooling.
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GitLab
DevOps platform for source control, CI/CD and software delivery. The Community Edition is open source under the MIT licence; a paid Enterprise Edition funds the company through subscriptions.
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ClickHouse
Open-source columnar database system for analytical processing that performs real-time SQL queries on large datasets at high speed.
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Grafana Labs
Observability platform (Grafana Cloud) for collecting and visualising logs, metrics, traces and profiles, built on OpenTelemetry and Prometheus. Its commercial offering sits on top of open-source projects it maintains.
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Kong
Kong is a lightweight, open source API gateway that manages, configures, and routes requests to APIs across the enterprise. The platform processes millions of requests with microsecond latency and is used in production by hundreds of organizations from startups to enterprises and governments.
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Temporal Technologies
Open-source platform for building applications that automatically recover from failures. Provides workflow orchestration that captures application state at every step and resumes execution after failures without manual intervention.
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Supabase
Supabase is an open source backend development platform built on Postgres, providing database, authentication, storage, edge functions, and realtime capabilities. Developers use it to build web and mobile applications with integrated tools across global regions.
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Mozilla
Non-profit organization developing open source internet software including Firefox browser, Thunderbird email, VPN and developer tools. Works to keep the internet open, accessible and free for everyone while developing responsible technology.
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n8n
n8n is a workflow automation platform combining no-code visual workflows with code flexibility through JavaScript and Python. The platform offers 400+ integrations and supports both cloud hosting and self-hosted deployments for automating business processes.
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Bitwarden
Bitwarden is an open-source password management platform serving individuals and enterprises with secure credential storage. The platform offers password management, secrets management for developers, and passkey authentication, reaching 15 million users globally.
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Redis
In-memory key-value database widely used for caching, messaging, and data storage. Provides open-source Redis and commercial Enterprise software for application developers.
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Cockroach Labs
Cockroach Labs develops CockroachDB, a distributed SQL database for cloud-native applications. The database is PostgreSQL-compatible, fault-tolerant, and designed to scale across multiple regions and cloud providers. It is used by enterprises requiring high availability, data consistency, and disaster resilience.
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YugabyteDB
YugabyteDB is an open-source, distributed SQL database compatible with PostgreSQL. It combines relational database capabilities with horizontal scalability for cloud-native applications requiring ACID transactions and high availability.
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Airbyte
Airbyte is an open-source data integration platform that moves data from multiple sources into centralized warehouses and provides a context layer for AI agents. They offer over 600 pre-built connectors and a cloud-hosted solution.
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PostHog
PostHog is an all-in-one product analytics platform offering event tracking, session replays, feature flags, experiments, and error logging. Teams use it to understand user behavior and improve products with both cloud and self-hosted deployment options.