Free Tools for Indie Hackers: The Stack That Actually Costs $0 in 2026

Every "free tools for indie hackers" list has the same problem: it was written once, in 2023, and the limits are wrong. A free tier that gave you 100,000 events a month now gives you 1 million. A free tier you were told was unlimited now caps at 5,000 errors. And one of the most recommended tools on every list forbids commercial use entirely, which nobody mentions.

So this list is different in one specific way: every number below was read off the vendor's own pricing page on 19 August 2026. Where a tool has no free tier, it says so instead of quietly including it anyway.

What counts as actually free for an indie hacker?

A tool is free for an indie hacker if you can run a real product on it, indefinitely, without a credit card and without violating the terms. That rules out three things most lists include: 30-day trials, "free" plans that watermark your customer-facing output, and plans whose terms restrict you to non-commercial projects.

The distinction matters more than it sounds. A trial buys you a month; a free tier buys you the eighteen months it takes to find out whether anyone wants the thing. The tools below are the second kind, with one deliberate exception that is flagged loudly.

What is the best free database and backend for a side project?

Supabase, on its free plan, is the most capable $0 backend available in 2026: 500 MB of database, 1 GB of file storage, 5 GB of egress, and 50,000 monthly active users. That user allowance is the striking number — you can serve fifty thousand people a month before the database costs you anything.

Two constraints matter and neither is on the marketing page. Free projects are paused after one week of inactivity, which is fine for a live product and annoying for a project you poke at monthly. And you can hold only two active free projects at a time, so a habit of spinning up throwaways will hit the ceiling before the storage does.

The 500 MB database is the limit you will actually hit first if you store anything log-shaped. Analytics events, webhook payloads and audit trails belong somewhere else — which is what the analytics section below is for. If you want to see what founders migrate to when they outgrow it, our Supabase alternatives page tracks the comparison set.

Is Vercel's free plan safe to use for a business?

No — and this is the single most important line in this article. Vercel's Hobby plan is documented as being for "personal, non-commercial use." If you are charging money, the free tier is not the right plan for you, regardless of whether you are under the usage caps.

The caps themselves are generous: 100 GB of fast data transfer, 4 hours of Active CPU, and 1 million function invocations a month. But Hobby accounts cannot purchase additional usage — when you hit a cap, you upgrade or you stop serving. There is no overage path.

The practical reading: Vercel Hobby is excellent for the pre-revenue phase and for anything you are not billing for. The day you take your first payment, that plan is a terms problem, not a cost problem. Cloudflare Workers is the free tier with no such restriction — 100,000 requests per day and 10 milliseconds of CPU per invocation, with requests to static assets free and unlimited. Ten milliseconds is tight for anything compute-heavy, and generous for the routing, redirects and API glue most small products actually run.

What is the best free transactional email service?

Resend's free plan sends 3,000 emails a month, capped at 100 a day, from one custom domain, with 30 days of log retention. The daily cap is the one that catches people: 3,000 a month reads as 100 a day only if your sending is perfectly even, and password resets and welcome emails are not evenly distributed.

For a product with a few hundred users, that allowance covers signups, resets and receipts comfortably. It does not cover a newsletter blast to your whole list, and it is not meant to — transactional and marketing email are different jobs with different deliverability rules. Mixing them on one domain is a classic early mistake. See the comparison set on our Resend alternatives page.

What can I use instead of paying for analytics?

PostHog's free allowance is the largest of anything on this list: 1 million product analytics events, 5,000 session replays, 1 million feature flag requests and 100,000 error tracking exceptions per month. For a product under a few thousand users, that is not a starter tier — it is more capacity than you will use.

The honest counterpoint is that PostHog is a lot of tool. If all you want is a pageview count and a referrer list, it is heavy, and the privacy-first alternative most founders reach for is Plausible — which has no permanent free tier. Plausible runs a 30-day free trial with no credit card, then starts at $9/month for 10,000 monthly pageviews on one site. That is a real cost, and it is worth stating plainly rather than listing Plausible as "free" because the trial exists.

Both are catalogued under analytics tools in our directory, alongside the self-hosted options that trade a monthly bill for your own maintenance time.

How it compares: the free tiers side by side

Sizing free tiers against each other is the part every list skips, so here is the direct comparison as of August 2026:

• Most generous absolute allowance: PostHog — 1 million events per month. Nothing else on this list gives you seven figures of anything.
• Most generous for user-facing scale: Supabase — 50,000 monthly active users, against Sentry's single seat and Resend's 100 emails a day.
• Tightest free tier: Sentry's Developer plan — 5,000 errors, 5 million tracing spans, 50 session replays, and one user. It is built for a solo developer and stops working the moment you have a co-founder who also wants alerts.
• Only one with a commercial-use restriction: Vercel Hobby. Cloudflare Workers, Supabase, Resend, PostHog, Sentry and Tally all permit commercial use on their free plans.
• Only one with genuinely no limits published: Tally — unlimited forms and unlimited submissions on the free plan, including payments, file uploads, conditional logic and signatures, subject to a fair-usage policy rather than a number.
• Not free at all, despite appearing on most lists: Plausible. A 30-day trial, then $9/month minimum.

Tally deserves the specific call-out. Most form builders put file uploads, payment collection and conditional logic behind the first paid tier; Tally does not, which makes it the rare free tool that does not degrade the thing your customer actually sees. If you need a waitlist, a survey or a checkout-shaped intake form before you have written a line of backend code, it is a complete answer on its own.

What about the free tools everyone forgets to count?

Notion's free plan gives individuals unlimited pages and blocks, 7 days of version history and a 5 MB per-file upload limit. The catch appears the moment a second person joins: multi-member free workspaces have a block limit, after which you can read and edit existing content but not add new blocks. As a solo founder's wiki it is genuinely unlimited; as a team wiki it is a countdown.

Sentry's Developer plan — 5,000 errors, 5 million spans, 50 replays, one seat — is worth wiring up on day one even though the seat limit means it does not survive your first hire. Error tracking has the unusual property that it is most valuable when you have the fewest users, because with ten users you can still fix every single crash you see.

And the free distribution channels are worth more than the free infrastructure. Getting listed in the right places costs nothing but an afternoon; we wrote the full playbook in how to promote your startup with no budget, and the ranked list of where to submit lives in the best startup directories for founders.

What should you pay for first?

Pay for the thing that breaks your product for a customer, not the thing that annoys you. In practice that ordering is: hosting terms first (move off Vercel Hobby the day you charge money), then email volume, then database size, then analytics, then error tracking seats.

The reasoning is about blast radius. A hosting terms violation can take your site down with no warning and no overage path. An email cap silently drops password resets — the user thinks your product is broken. A full database returns write errors to real users. By contrast, hitting an analytics cap means you lose some of your own visibility for a few weeks, which is uncomfortable but invisible to customers. Spend money in the order of who notices.

Frequently asked questions

Can I run a paying business entirely on free tiers? Technically yes on most of this stack, but not on Vercel's Hobby plan, which is documented as personal and non-commercial. Supabase, Cloudflare Workers, Resend, PostHog, Sentry and Tally all allow commercial use at $0.

What is the first free tier a growing product usually outgrows? Resend's 100-emails-per-day cap, because it is a daily limit rather than a monthly one. A single onboarding spike can hit it while your monthly total is nowhere near 3,000.

Is Supabase's free tier really unlimited API requests? Requests are unlimited; the binding constraints are 5 GB of egress, 500 MB of database and the one-week inactivity pause. Egress is what a request-heavy app hits first.

Why is Plausible in an article about free tools? Because it is on nearly every free-tools list and it is not free — a 30-day trial then $9/month. Knowing which recommendations are wrong is as useful as the recommendations themselves.

Do these limits change? Frequently. Every number here was read from the vendor's own pricing page on 19 August 2026; check the source page before you architect around any of them.

Conclusion

The free stack available to an indie hacker in 2026 is genuinely enough to build and run a real product: a database serving 50,000 monthly users, a million analytics events, unlimited forms, 3,000 emails and error tracking, all at $0. The failure mode is no longer capacity — it is terms. One of the most-recommended tools on every list restricts its free plan to non-commercial use, and a founder who ships a paid product on it has a problem that no usage dashboard will warn them about.

Build on the free tiers, and read the one line about commercial use before you take a payment. When you are ready to be found, list your product in the Launchory directory — a free listing earns a dofollow backlink once your badge is verified, and you can see exactly what that costs on our pricing page. More free infrastructure worth knowing about is catalogued under developer tools.