Awesome Open Source Alternatives - The AltStack Data HQ

A curated list of 450+ open-source alternatives to popular SaaS products.
Stop paying for what you can host yourself. Build sovereign infrastructure with AltStack.

Explore the Directory • Self-Hosted Configurator • Self-Hosting Guides • Request a Tool

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🚀 Why Sovereign Infrastructure?

Every SaaS you pay for is a piece of your sovereign control you are leasing. The mission of AltStack is to provide the data and deployment configurations necessary to replace the "Big Tech" stack with a Sovereign Stack you own.

This repository serves as the Data HQ for The AltStack. Every tool listed here is vetted for quality, activity, and self-hostability. See CRITERIA.md for the full vetting standards.

🚀 Quick Start (Mini-Stacks)

Get up and running in under 2 minutes. These are "Development Mode" snippets. For production-hardened setups (SSL, Backups, Auth), follow the links to The AltStack Documentation.

📦 PocketBase (BaaS)

The fastest way to get a backend with Auth, Database, and Admin UI.

# docker-compose.yml
services:
  pocketbase:
    image: mujo-code/pocketbase:latest
    container_name: pocketbase
    ports:
      - "8090:8080"
    volumes:
      - ./pb_data:/pb_data
    restart: unless-stopped

👉 Open in Self-Hosted Configurator • Deployment Guide

📊 Plausible Analytics (Privacy-First)

Lightweight, open-source analytics.

# docker-compose.yml (Simplified)
services:
  plausible:
    image: plausible/analytics:latest
    ports:
      - "8000:8000"
    env_file: .env
...

👉 Open in Self-Hosted Configurator • Full Self-Hosting Guide

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🛠️ Browse by Category

• 🏗️ Backend as a Service → Compare all on thealtstack.com
• 💬 Communication → Compare all on thealtstack.com
• 📊 Analytics & BI → Compare all on thealtstack.com
• 📁 Project Management → Compare all on thealtstack.com

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📂 The Awesome Alternatives List

🏗️ Backend as a Service (BaaS)

Alternatives to Firebase and AWS Amplify

• Supabase - The open source Firebase alternative with a dedicated Postgres database.
• Appwrite - A complete backend for Flutter, Web, and Mobile developers.
• PocketBase - Open source realtime backend in 1 file (Go & SQLite).
• 🔗 Compare BaaS Alternatives on AltStack

💬 Communication & Collaboration

Alternatives to Slack, Zoom, and Microsoft Teams

• Mattermost - Open source platform for secure collaboration across the SDLC.
• Rocket.Chat - The Secure CommsOS™ for mission-critical operations.
• Jitsi Meet - Fully encrypted, 100% open source video conferencing.
• 🔗 Explore Communication Stacks on AltStack

📊 Analytics & BI

Alternatives to Google Analytics, Mixpanel, and Tableau

• Plausible - Simple, lightweight, and privacy-friendly web analytics.
• PostHog - Product analytics, session recording, and feature flags.
• Matomo - The leading open source Google Analytics alternative.
• Metabase - The simplest way to get business intelligence throughout your company.
• Apache Superset - Modern data exploration and visualization platform.
• 🔗 Check Analytics on AltStack

📁 Project Management

Alternatives to Jira, Asana, and Monday.com

• Plane - Beautiful open-source Jira/Linear alternative.
• Taiga - Agile project management for multi-functional teams.
• OpenProject - Powerful classic project management and collaboration.
• 🔗 Self-host Project Management on AltStack

🎨 Design & Creative

Alternatives to Photoshop, Figma, and Illustrator

• Penpot - The open-source design tool for design and code collaboration (Figma alternative).
• GIMP - Professional-grade photo editing tools (Photoshop alternative).
• Krita - Open source digital painting (Illustrator/Corel alternative).
• 🔗 Design Tools on AltStack

📝 Productivity & Knowledge

Alternatives to Notion, Microsoft 365, and Google Workspace

• AppFlowy - Privacy-focused Notion alternative built in Rust.
• AFFiNE - Next-gen knowledge base that brings planning and creation together.
• ONLYOFFICE - Highly compatible MS Office online editors.
• 🔗 Productivity Alternatives on AltStack

🔐 Security & IAM

Alternatives to 1Password, Auth0, and Okta

• Bitwarden - Open source password manager for individuals and teams.
• KeePassXC - Fully offline, AES-256 password manager.
• Keycloak - Open source identity and access management.
• Authentik - The overall-best open-source identity provider.
• 🔗 Security Tools on AltStack

🛠️ DevOps & Automation

Alternatives to Heroku, Zapier, and Vercel

• Coolify - Self-hostable PaaS alternative to Heroku & Netlify.
• n8n - Workflow automation tool with 400+ integrations.
• Activepieces - Open source Zapier alternative.
• 🔗 DevOps Tools on AltStack

💾 Storage & Infrastructure

Alternatives to AWS S3, Dropbox, and Salesforce

• Garage - An open-source distributed object storage service tailored for self-hosting.
• Odoo - All-in-one ERP suite (Salesforce alternative).
• Nextcloud - Content collaboration platform (Dropbox/Google Drive alternative).
• 🔗 Infrastructure on AltStack

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⚡ Quick Start: Deploy Your First Alternative

Most tools in this list can be deployed in minutes using Docker. Here is how to get started with the AltStack approach:

1. Clone this repo: git clone https://github.com/altstackHQ/altstack-data.git
2. Explore /deployments: Find the Docker Compose file for the tool you want.
3. Go Sovereign: Visit docs.thealtstack.com for production-hardened guides (SSL, backups, and reverse proxies).

Tip

This repository contains basic community configs. For commercial-grade Sovereign Infrastructure setup, always refer to our Official Documentation.

cd deployments/plausible
docker-compose up -d

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🗺️ Directory Mapping (The AltStack Bridge)

We use the data in this repository to power our Main Website. Here is how the categories map:

UI Directory	Data Source (this repo)	Self-Hosted Guide
Backend	data/tools.json	Deploy Guides
Analytics	data/tools.json	Deploy Guides
Project Management	data/tools.json	Deploy Guides
Communication	data/tools.json	Deploy Guides
Productivity	data/tools.json	Deploy Guides

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🤝 Contributing

We love contributions! If you know of a great open-source tool we missed:

1. Check the Contribution Guidelines.
2. Open an Issue with the tool details.
3. Submit a PR to update data/tools.json.

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Built with ❤️ by the AltStack Team.