SigNoz
MIT-core application observability — unified APM, logs, and traces via OpenTelemetry, with no per-host or ingestion fees. SAML SSO and RBAC require the Enterprise Edition.
Open Source Alternatives: The Sovereign Stack
A curated database of vetted open source alternatives to proprietary SaaS. Find tools that are safe, compliant, and ready for business.
Showing of 110 solutions
Mattermost
A secure, self-hostable, open-source communication platform designed for enterprises that prioritize data sovereignty and require a private alternative to SaaS chat solutions.
Docmost
An open-source, self-hosted alternative to Notion and Confluence, providing real-time collaborative documentation and wikis with complete data sovereignty.
Keycloak
The open-source standard for Identity and Access Management (IAM), offering complete sovereignty over user data, federation, and SSO infrastructure without per-user licensing costs.
PostHog
MIT-core product analytics platform — event tracking, session replay, feature flags, and A/B testing unified. RBAC and SAML are gated behind paid enterprise add-ons.
Zitadel
AGPL-3.0 IAM platform from Switzerland — SOC 2 Type II and ISO 27001:2022 verified on the SaaS tier; self-hosted edition has no MAU limits, B2B multi-tenancy and SAML included.
Coolify
Self-hosted PaaS for deploying applications, databases, and services on your own infrastructure — a sovereign alternative to Heroku and Vercel with no per-deployment fees.
OpenBao
Linux Foundation-governed secrets management with zero enterprise tax and dynamic credentials — without HashiCorp's BSL lock-in.
RustDesk
AGPL-3.0 remote desktop platform — fully private relay keeps session data off third-party infrastructure. SSO, auditing, and device management require the paid Pro tier.
Zammad
AGPL-3.0 helpdesk with unlimited agents and tickets in the free self-hosted edition; LDAP and SAML ship standard, no enterprise paywall.
Penpot
Self-hosted design and prototyping platform — an open-source alternative to Figma with full data sovereignty. US parent entity creates CLOUD Act exposure; self-hosting is mandatory for full isolation.
Open WebUI
BSD-3-Clause self-hosted LLM interface. Unlimited users, full offline capability, no seat pricing — without ChatGPT's model training exposure.
Dark Reader
An open-source browser extension that intelligently inverts website colors to provide a comfortable dark theme, reducing eye strain.
IndustryFusion
An open-source, manufacturer-driven operating system for the smart factory. Enables digital sovereignty and interoperability in industrial environments.
Paperless-ngx
GPL-3.0 document management system with OCR. Zero enterprise tax — but clear-text storage makes infrastructure encryption mandatory for any regulated deployment.
BentoPDF
A 100% client-side, secure, and open-source alternative to iLovePDF. Process confidential documents without them ever leaving your browser.
Umami
Cookie-less web analytics with no PII collected and no consent banners required — all visitor data stored in your own PostgreSQL or MySQL database.