FOSS Stack

The open-source software we actively use across infrastructure, apps, identity, and collaboration.

We ❤️ open source. FOSS-first. FOSS-only, really.

OS & Networking

Debian

Stable Linux base for servers.

Ubuntu Server

LTS releases and ecosystem support.

pfSense

Open-source firewall and router.

Samba

SMB/CIFS file services & AD integration.

Databases

PostgreSQL

Primary relational datastore.

MariaDB

MySQL-compatible RDBMS.

Languages & Backend

Python

APIs, data tooling, automation.

C++

Performance-critical components.

Ultimate++

C++ rapid application framework.

Identity & Mail

Keycloak

SSO, OIDC/SAML, user federation.

Postfix

Mail transfer agent (SMTP).

Dovecot

IMAP/POP3 server.

OpenDKIM

DKIM signing & verification.

Frontend & Web

Next.js

React framework (App Router, SSR/ISR).

Tailwind CSS

Utility-first styling.

DevOps & Collaboration

GitLab CE

Self-hosted Git + CI/CD.

Mattermost

Team chat & integrations.

Nextcloud

Files, calendar, collaboration.

Business Apps

ERPNext

Open-source ERP.

Frappe Framework

Python/JS framework powering ERPNext.

LibreOffice

Open-source office productivity suite.