The Startup Open Source Stack: From Zero to Launch
You have an idea. You have limited funding. Here's how to go from zero to launch using open source tools — spending under $20/month on infrastructure.
Phase 1: Idea Validation (Week 1-2)
Goal: Validate the idea before building anything.
| Need | Tool | Cost |
|---|---|---|
| Landing page | Next.js on Coolify | $7/month (VPS) |
| Analytics | Plausible | $0 (same VPS) |
| Waitlist form | Formbricks | $0 (same VPS) |
| Email collection | Listmonk | $0 (same VPS) |
| Link tracking | Dub | $0 (same VPS) |
Total: $7/month
What to Build
- One-page landing explaining the problem and solution
- Waitlist signup form (Formbricks → Listmonk)
- Plausible analytics to track interest
- Share via Dub short links on social media
Validation Metrics
- 100+ signups = promising
- 500+ signups = strong signal
- 1,000+ signups = build it
Phase 2: MVP Build (Week 3-6)
Goal: Build and ship the minimum viable product.
Product Stack
| Component | Tool | Why |
|---|---|---|
| Backend | PocketBase or Supabase | Auth + DB + API in one |
| Frontend | Next.js / Nuxt / SvelteKit | Your choice of framework |
| Hosting | Coolify | Git push to deploy |
| Search (if needed) | Meilisearch | Instant search API |
| Auth (if complex) | Logto or built-in | Social login, MFA |
| File storage | Supabase Storage or MinIO | S3-compatible |
Business Stack (Add to Existing Server)
| Tool | Purpose |
|---|---|
| Uptime Kuma | Monitor your product |
| Vaultwarden | Store API keys and passwords |
| Cal.com | Book user research calls |
Total: $7-14/month (1-2 VPS instances)
MVP Checklist
- [ ] Core feature works end-to-end
- [ ] User registration and login
- [ ] Basic error handling
- [ ] Mobile-responsive
- [ ] Analytics tracking key actions
- [ ] Feedback mechanism (Formbricks survey)
Phase 3: Launch (Week 6-8)
Goal: Ship to first users and start collecting feedback.
Pre-Launch
| Task | Tool |
|---|---|
| Set up customer support | Chatwoot (live chat widget on your site) |
| Prepare launch announcement | Listmonk (email to waitlist) |
| Create status page | Uptime Kuma (public status page) |
| Set up monitoring alerts | Uptime Kuma → email/Mattermost |
| Prepare feedback forms | Formbricks (in-app survey) |
Launch Day Stack
| Tool | Purpose |
|---|---|
| Plausible | Watch traffic in real-time |
| Chatwoot | Respond to user questions instantly |
| Uptime Kuma | Make sure nothing goes down |
| Mattermost | Team communication during launch |
| n8n | Automate notifications (new signup → Mattermost) |
Launch Checklist
- [ ] Email waitlist (Listmonk)
- [ ] Post on Hacker News (Show HN)
- [ ] Post on Product Hunt
- [ ] Share on Twitter/X with Dub links
- [ ] Post on Reddit (relevant subreddits)
- [ ] Monitor Chatwoot for user questions
- [ ] Watch Plausible for traffic spikes
- [ ] Monitor Uptime Kuma for downtime
Phase 4: Growth (Month 2-6)
Goal: Grow users, add features, start monetizing.
Add Revenue Tools
| Need | Tool |
|---|---|
| Payments | Stripe (keep SaaS — payment is hard) |
| Invoicing | Invoice Ninja |
| CRM | Twenty |
| Email drips | Listmonk (autoresponders) |
Add Team Tools (When You Hire)
| Need | Tool |
|---|---|
| Team chat | Mattermost |
| Project management | Plane |
| Documentation | Outline |
| Knowledge base | Outline (public collection) |
Scale Infrastructure
| Stage | Users | Infrastructure | Monthly Cost |
|---|---|---|---|
| Pre-launch | 0 | 1 VPS (4 GB) | $4.50 |
| Launch | 0-100 | 1 VPS (8 GB) | $7 |
| Growth | 100-1K | 2 VPS + DB server | $16 |
| Traction | 1K-10K | 3 VPS + DB server | $25 |
| Scale | 10K+ | 4+ VPS + dedicated DB | $50+ |
The Complete Launch Stack (Summary)
| Category | Tool | When to Add |
|---|---|---|
| Landing page | Next.js + Coolify | Phase 1 |
| Analytics | Plausible | Phase 1 |
| Waitlist/forms | Formbricks | Phase 1 |
| Email marketing | Listmonk | Phase 1 |
| Link tracking | Dub | Phase 1 |
| Product backend | PocketBase/Supabase | Phase 2 |
| Product hosting | Coolify | Phase 2 |
| Monitoring | Uptime Kuma | Phase 2 |
| Passwords | Vaultwarden | Phase 2 |
| Scheduling | Cal.com | Phase 2 |
| Customer support | Chatwoot | Phase 3 |
| Automation | n8n | Phase 3 |
| Payments | Stripe | Phase 4 |
| CRM | Twenty | Phase 4 |
| Team chat | Mattermost | Phase 4 |
| Project management | Plane | Phase 4 |
| Documentation | Outline | Phase 4 |
| Invoicing | Invoice Ninja | Phase 4 |
Cost Timeline
| Phase | Duration | Monthly Cost | SaaS Equivalent |
|---|---|---|---|
| Validation | 2 weeks | $7 | $50+ |
| MVP | 4 weeks | $7-14 | $100+ |
| Launch | 2 weeks | $14 | $200+ |
| Growth (3 people) | Ongoing | $20-30 | $500+ |
| Scale (10 people) | Ongoing | $30-50 | $2,000+ |
The Bottom Line
You can go from idea to launched product spending $7-14/month on infrastructure. The complete stack for a 10-person startup costs $30-50/month vs $2,000+/month on SaaS.
That's not just savings — it's extended runway. Every dollar you don't spend on SaaS is a dollar invested in your product.
Start lean. Add tools as needs emerge. Ship fast.
Find every tool you need for your startup at OSSAlt.
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