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 219 solutions
AGPLv3-or-commercial image toolkit: 50+ tools plus local AI for background removal, upscaling, and OCR in one Docker container. Images never leave your hardware. SaaS embedding needs a paid license.
MIT voice-to-text dictation that runs Whisper and Parakeet models fully on-device: hotkey, speak into any app, nothing leaves your machine. Cloud sync, agent mode, and SSO sit behind paid tiers.
Apache-2.0 vector database in Rust for RAG and semantic search, fully self-hostable with no copyleft strings. Multi-AZ high availability, SSO, and audit logs are gated to the managed Qdrant Cloud.
Local-first AI desktop assistant that keeps your "second brain" in an Obsidian-style Markdown vault and on-device SQLite. Optional local Ollama models, no cloud account. GPL-3.0, single-founder beta.
MIT-licensed control plane for fleets of AI agents: org charts, per-agent budgets, audit logs, and approval workflows. The governance layer proprietary platforms paywall, here free and self-hosted.
AGPL-licensed context database for AI agents: persistent memory, resources, and skills via a filesystem paradigm. Governed entirely by Volcengine (ByteDance); no independent foundation.
MIT-core terminal coding harness that wraps any LLM provider into an extensible agent, no IDE required. Future Fair Source and proprietary enterprise tiers announced but not yet released.
Open-core e-signature platform for sending documents to one or more signers with an audit trail, run on your own servers, under AGPL-3.0-only.
Self-improving AI agent with persistent memory and autonomous skills. Now adds a native desktop app (macOS, Windows, Linux) on top of 23+ messaging channels. Self-hosted, MIT-licensed, BYOK.
Eclipse Foundation-governed capital markets platform for trade capture, P&L, and treasury operations. No licence fees or vendor lock-in. Requires Jakarta EE expertise and financial data integration.
AGPLv3-licensed, cookie-free web analytics built in the EU. No consent banners required, sub-1KB script. SSO and automated exports gated behind the Enterprise tier.
Source-available Kanban boards with real-time collaboration and Markdown support. EU-hosted, Docker-native, but commercial hosting and cross-company use require a paid license.
Desktop screen recording with automatic zoom and professional effects. No watermarks, no subscriptions, no cloud dependency. Single-maintainer project.
AGPL-3.0 project management designed for non-project managers. Neurodiversity-aware UX with strategic PM frameworks; enterprise features gated behind proprietary plugins.
Daemonless, rootless container management desktop: enterprise managed configuration, proxy enforcement, and telemetry controls included at no cost.
Self-hosted AI agent framework for autonomous code generation, command execution, and tool creation. Runs entirely within your infrastructure, with no external API dependency.
Open-core team chat platform for conversations with colleagues, partners and customers, with end-to-end encryption for private rooms, under MIT.
Private AI search connecting local LLMs to Slack, Notion, and Jira for cited sovereign search. No compliance certifications; self-hosting mandatory for regulated workloads.
Single-binary Go backend: embedded SQLite, real-time subscriptions, and built-in auth. No native data-at-rest encryption; disk-level encryption required for regulated workloads.
AGPL-3.0 visual web builder. Projects export as standard Remix/React code; custom domains, CMS integrations, and team collaboration require paid tiers.
Apache 2.0 LLM fine-tuning framework from Unsloth AI: 2x faster training on 60% less VRAM versus standard implementations; multi-GPU and full-parameter training require Pro/Enterprise tiers.
An open-source, local-first AI orchestration desktop that allows you to run LLMs entirely on your own hardware. A private alternative to ChatGPT.