Open-Source Tools Built With Python (2026)
Self-hostable software written in Python.
If you prefer to run software written in Python — for easier auditing, contributing, or self-hosting on a stack your team already knows — these 3 open and self-hostable tools are built with it. Python projects tend to be easy to deploy alongside the rest of your Python infrastructure.
Open-source product analytics suite with events, funnels, session replay, feature flags, and A/B tests.
Open sourceSelf-hostFree / self-hostMIT24k★
- Single platform replaces GA, Hotjar, LaunchDarkly, and parts of Segment
- Generous free cloud tier — 1 million events per month at no cost
- Self-hosting at scale requires Kafka, ClickHouse, and Redis — significant ops burden
Modern open-source identity provider with a clean UI, supporting SSO, OIDC, SAML, and LDAP.
Open sourceSelf-hostFree / self-hostMIT / Open-core14.2k★
- Significantly friendlier admin UX than Keycloak — less XML, no realm mental model
- MIT-licensed community edition is free with no MAU or seat limits
- Enterprise features (audit logs, support SLAs) require a paid license
Open-source no-code database you can self-host, with a familiar Airtable-style UI.
Open sourceSelf-hostFree / self-hostMIT / Open-core
- MIT-licensed core you can run for free
- One-command Docker self-hosting
- Some advanced features are paid/enterprise