The Free-Tools-Only Stack (For Bootstrappers)

• Supabase Auth — 50,000 MAU free.
• Clerk free tier — 10,000 MAU free.
• Auth.js (next-auth) — fully free, self-hosted in your app, integrates with any DB.

When you cross thresholds: Clerk Pro starts at $25/mo.

Comms and docs

• Discord for community — free, unlimited.
• Notion personal plan — free for individuals, paid only if you need team collaboration on shared workspaces.
• Slack free tier — 90 days of message history. Workable for tiny teams; painful past 6 months because you lose discoverability.
• Cal.com cloud free tier — generous; self-hosted is also free.
• Linear free tier — up to 250 issues. Tight but viable for a small product.

When you cross thresholds: Slack Pro is $7.25/user/mo and is the biggest unlock once you have ≥3 people.

Code and CI

• GitHub free — unlimited private repos, GitHub Actions 2,000 free minutes/month.
• Vercel Git integration — free deploys on push, preview URLs per PR.

When you cross thresholds: GitHub Pro is $4/user/mo if you need protected branches with required reviews.

Analytics

• Umami self-hosted on Vercel — free, GDPR-friendly, no cookie banner.
• Plausible community edition self-hosted — free.
• PostHog free tier — 1M events/month, 5,000 session recordings. Most pre-revenue products won't hit either cap.

When you cross thresholds: PostHog cloud paid starts at $0.0001/event ($50/mo at 1M monthly events).

Customer support

• Plain free tier — 2 seats, basic ticketing.
• Crisp free tier — 2 seats, live chat + email.
• Discord channel as support — free, works at the very early stage.

When you cross thresholds: Front, Intercom, or Plain Pro at $50-100/mo.

Design and content

• Figma free — 3 files, unlimited viewers. Workable for tiny teams.
• Penpot (open source) — self-hosted Figma alternative. Fully free.
• Loom free tier — 25 videos, 5-minute max. Enough for async product walkthroughs and customer demos.
• Tella free tier — 25 videos. Loom alternative with face-cam overlay.

When you cross thresholds: Figma at $15/seat/mo and Loom at $15/mo per user.

Payments

• Stripe — no monthly fee, 2.9% + $0.30 per transaction. Free until you make money.
• Lemon Squeezy as merchant of record — also no monthly fee, takes a higher cut (~5%) but handles global tax for you.

This isn't really "free" — Stripe takes a cut — but there's no fixed cost until revenue.

Status and uptime

• UptimeRobot free — 50 monitors, 5-minute interval.
• Better Stack free tier — 10 monitors, 3-minute interval.
• Statuspage alternatives — most are free for public pages.

SEO and site monitoring

• Google Search Console — free, essential.
• Ahrefs Webmaster Tools — free for site owners, gives Ahrefs-grade data for your own properties.
• Bing Webmaster Tools — free, surprisingly useful for keyword data and crawl issues.

When to start paying

When the free tier limits start slowing your business — usually around 100-300 paying customers. Then upgrade only the bottleneck, not everything. The most common first paid upgrades are:

1. Supabase Pro ($25) — removes pause-on-inactivity, lifts DB size.
2. Vercel Pro ($20) — lifts request and bandwidth limits.
3. Resend at higher tier ($20) — removes daily send cap.
4. Slack Pro at $7.25/seat — unlocks message history past 90 days.

Total monthly spend at this stage: ~$80-120. You're spending less than 1% of revenue on infra. Don't optimise further.

When to stop bootstrapping the stack

Three signals:

• You're spending 5+ hours/week working around free-tier limitations.
• You're losing customers because of a free-tier-induced bug (downtime, cap-hits, deliverability).
• Your engineers' time saved by paying outweighs the monthly cost 10x.

When two of three are true, upgrade. Don't be precious about the free-tier badge once it's costing you customers.

What this stack costs at peak

Most bootstrapped founders following this template spend $0/month from month 1 to month 6, then $30-60/month from month 6 to month 12 (after first paid upgrade), then $150-300/month past month 12 (after 3-4 paid upgrades). At 100 paying customers, you're at <$5 infra cost per customer per year. Compare to typical SaaS COGS of $20-50/customer/year and you have a healthy starting position.

The whole point isn't to be free forever — it's to be free until paid actually buys you something.