The $6 AI Company: How to Self-Host an $8,800/Year SaaS Stack on a Single VPS

Description and use

Bootstrappers can replace $8,800/year SaaS spend with a sovereign stack on a $6/month VPS using 30+ open‑source tools.

Problem

Early‑stage builders spend ~$8,800 a year on managed SaaS subscriptions before acquiring a customer, draining cash flow and limiting sovereignty.

Outcome

Bootstrappers can replace $8,800/year of SaaS spend with a sovereign stack on a $6/month VPS, achieving full control, zero license costs, and low memory footprint.

Workflow

• 1. Deploy a $6/month VPS (e.g., DigitalOcean Droplet).
• 2. Harden the VPS with UFW and 4 GB NVMe swap script.
• 3. Install Docker and Docker‑Compose.
• 4. Deploy the core stack: Better Auth (in‑process auth), Dokploy/Coolify for CI/CD and Traefik routing, PostgreSQL 16 with pgvector and Turso libSQL for relational and vector storage, Listmonk with Amazon SES for email.
• 5. Add open‑source tools: Activepieces/n8n CE for workflow automation, Windmill for internal tooling, Twenty CRM & Cal.com for CRM/scheduling, Crawl4AI/Docling/MarkItDown for AI ingestion, Langfuse/promptfoo for AI observability.
• 6. Configure automated Cloudflare R2 backups.
• 7. Verify latency and performance via live checks.
• 8. Iterate and scale as needed.

Evidence

30+ battle-tested open-source tools now cover the entire stack with $0 in software licenses

Source

Total measured idle memory for the core foundation is ~475 MB RAM

Source