Free and Open Source SaaS Stack for Bootstrapped Startups
Free and Open Source SaaS Stack for Bootstrapped Startups
When you're bootstrapping, every dollar matters. Here's a complete startup stack that costs under $20/month instead of $2,000+.
The Full Stack
| Category | SaaS Alternative | Open Source Tool | SaaS Cost/Month | OSS Cost/Month |
|---|---|---|---|---|
| Team chat | Slack | Mattermost | $0-87.50 | $0 |
| Project management | Linear/Jira | Plane | $0-80 | $0 |
| Documentation | Notion | Outline | $0-120 | $0 |
| Analytics | Google Analytics | Plausible | $0* | $0 |
| CRM | HubSpot | Twenty | $0-200 | $0 |
| Email marketing | Mailchimp | Listmonk | $0-50 | $0 |
| Customer support | Intercom | Chatwoot | $0-390 | $0 |
| Scheduling | Calendly | Cal.com | $0-120 | $0 |
| Passwords | 1Password | Vaultwarden | $0-40 | $0 |
| Monitoring | Better Stack | Uptime Kuma | $0-25 | $0 |
| Automation | Zapier | n8n | $0-49 | $0 |
| Forms | Typeform | Formbricks | $0-59 | $0 |
| Link shortener | Bitly | Dub | $0-35 | $0 |
| Total | $0-1,255 | $0 |
GA4 is "free" but you pay with user data.
Software cost: $0. You only pay for hosting.
Hosting Options
Option 1: Single VPS ($7/month)
- Provider: Hetzner CX32 (4 vCPU, 8 GB RAM)
- Fits: 8-10 tools for a team of 5-15
- Best for: Pre-revenue startups
Option 2: Two VPS ($14/month)
- Provider: 2× Hetzner CX22 (2 vCPU, 4 GB each)
- Fits: Split services for better reliability
- Best for: Early-revenue startups
Option 3: Coolify on a VPS ($7-14/month)
- Provider: Hetzner + Coolify (free, self-hosted PaaS)
- Benefit: One-click deploys, auto-SSL, GUI management
- Best for: Founders without DevOps experience
The $7/Month Stack (Minimal)
For solo founders and teams under 5:
| Tool | RAM Usage | What It Replaces |
|---|---|---|
| Plane | 512 MB | Linear ($8/user) |
| Plausible | 256 MB | Google Analytics |
| Uptime Kuma | 128 MB | Better Stack ($25+) |
| Vaultwarden | 50 MB | 1Password ($4/user) |
| Cal.com | 512 MB | Calendly ($12/user) |
| Caddy (reverse proxy) | 50 MB | — |
| Total | ~1.5 GB | $49+/month saved |
Server: Hetzner CX22 (2 vCPU, 4 GB) — $4.50/month Backups + domain: ~$2.50/month Total: $7/month
The $14/Month Stack (Full)
For teams of 5-15:
| Tool | RAM Usage | What It Replaces |
|---|---|---|
| Mattermost | 512 MB | Slack ($8.75/user) |
| Plane | 512 MB | Linear/Jira |
| Outline | 256 MB | Notion ($12/user) |
| Plausible | 256 MB | Google Analytics |
| Chatwoot | 512 MB | Intercom ($39+) |
| Cal.com | 512 MB | Calendly ($12/user) |
| Listmonk | 128 MB | Mailchimp ($20+) |
| Vaultwarden | 50 MB | 1Password ($4/user) |
| Uptime Kuma | 128 MB | Better Stack ($25+) |
| n8n | 256 MB | Zapier ($49+) |
| Caddy | 50 MB | — |
| PostgreSQL (shared) | 512 MB | — |
| Redis (shared) | 128 MB | — |
| Total | ~3.8 GB | $200+/month saved |
Server: Hetzner CX32 (4 vCPU, 8 GB) — $7/month Backups + domain + SMTP: ~$7/month Total: $14/month
Setup Guide (2-3 Hours)
Prerequisites
- A VPS (Hetzner recommended)
- A domain name
- Basic terminal knowledge
Step 1: Server Setup (15 min)
# SSH in and install Docker
ssh root@your-server
curl -fsSL https://get.docker.com | sh
apt install docker-compose-plugin
Step 2: Deploy Coolify (10 min)
curl -fsSL https://cdn.coollabs.io/coolify/install.sh | bash
Then open http://your-server-ip:8000 and configure.
Step 3: Deploy Services (1-2 hours)
Use Coolify's one-click services or Docker Compose:
- Set up DNS records for each service
- Deploy each tool through Coolify UI
- Configure initial accounts
- Set up backups
Step 4: Secure Everything (30 min)
- Disable root SSH login
- Set up SSH keys
- Enable UFW firewall
- Disable public registration on all tools
Cost Comparison: Your First Year
10-Person Team
| Month | SaaS Stack | Self-Hosted | Savings |
|---|---|---|---|
| 1-3 | Free tiers | $14/month | -$14/month (SaaS free tiers win) |
| 4-6 | $300/month (outgrow free) | $14/month | $286/month |
| 7-12 | $500/month (more users/features) | $14/month | $486/month |
| Year 1 Total | $4,800 | $168 | $4,632 saved |
When SaaS Free Tiers Run Out
Most SaaS free tiers have limits that startups hit within 3-6 months:
| Tool | Free Tier Limit | When You Hit It |
|---|---|---|
| Slack | 90-day message history | Day 91 |
| Notion | 10 guest collaborators | First client invite |
| Calendly | 1 event type | When you need team scheduling |
| Zapier | 100 tasks/month | First week with automations |
| Intercom | 1,000 contacts | First 100 customers |
| Mailchimp | 500 contacts | First marketing campaign |
Self-hosted has no limits. Your constraints are server resources, not pricing tiers.
What You Give Up
Being honest about trade-offs:
| Factor | SaaS | Self-Hosted |
|---|---|---|
| Setup time | Instant | 2-3 hours |
| Maintenance | Zero | 2-4 hours/month |
| Mobile apps | Polished native | Varies by tool |
| Uptime guarantee | 99.9%+ SLA | You manage it |
| Support | Paid support channels | Community + docs |
| Integrations | App marketplaces | API + webhooks |
The Non-Monetary Benefits
1. Data Ownership
- Your customer data is on your server
- No third-party access
- GDPR compliance by default
2. No Vendor Dependency
- SaaS tool shuts down? Your data is safe
- Price increase? Doesn't affect you
- Feature removed? Fork it
3. Customization
- Modify tools to fit your workflow
- No feature gates or plan limitations
- API access to everything
4. Learning
- Understanding infrastructure = competitive advantage
- DevOps skills compound over time
- Less mystery when things break
The Bottom Line
A bootstrapped startup can run a complete, professional tech stack for $7-14/month instead of $500-2,000+/month on SaaS.
That's $6,000-24,000/year saved — money that goes toward product development, marketing, or extending your runway.
The setup takes one afternoon. The savings last forever.
Find the best open source alternative for every SaaS tool at OSSAlt.