A Formsite alternative built for shipping.

Formsite is one of the longest-running form builders on the web — founded in 1999 and still a credible choice for institutions that need a mature visual editor, multi-page forms, payment collection, and a vendor with two and a half decades of track record. If your buyer is a procurement team that wants a known entity, or a non-technical operator building a complex multi-step survey, Formsite is genuinely in the running.

splitforms is the better fit when you're a developer shipping HTML forms on your own domain. The free tier is dramatically more usable for a real project (500 submissions/month with unlimited forms and a real dashboard vs Formsite's limited free plan with branding and a 100-result cap), the Pro plan is $5/mo for 5,000 submissions vs Formsite's $19.50/mo Basic for 1,500, and the form lives on your own domain as standard HTML instead of being hosted on a Formsite subdomain or embedded via iframe.

The first trigger is the form-count and result-count double cap. Formsite tiers on both form count and result (submission) count at every plan — 5 forms / 100 results on free, 15 forms / 1,500 results on Basic, scaling all the way up. For anyone running multiple low-traffic forms, the form-count side binds well before actual traffic does. splitforms removes that ceiling entirely: unlimited forms on every tier, including Free.

The second trigger is the hosting model. Formsite forms are hosted on a Formsite subdomain or embedded via iframe. For internal surveys that's fine; for a public marketing site, the iframe loads slowly, breaks page styling, breaks the analytics chain across the funnel, and ships a 'Powered by Formsite' footer on the free and lower tiers. splitforms is a standard form action — your HTML, your domain, your CSS, no iframe.

The third trigger is developer experience. Formsite's product is a hosted builder; its API surface is functional but secondary to the visual editor. splitforms ships an open REST API on every plan including free, HMAC-SHA256 signed webhooks (single delivery attempt, 8-second timeout) on paid plans, and an MCP server so Claude or Cursor agents can read submissions and drive workflows without a custom integration. For a developer wiring forms into the broader stack, splitforms feels native in a way Formsite doesn't.

Formsite Free

5 forms, 100 results, branded footer, limited integrations. splitforms Free: 500 submissions/month, unlimited forms, full dashboard, AI spam filtering, open API. For a real production project, the 5x result gap is the headline.

Formsite Basic ($19.50/mo)

15 forms, 1,500 results. splitforms Pro ($5/mo): 5,000 submissions/month, no per-form cap. Roughly 4x cheaper at higher submission volume.

Formsite Professional ($32.50/mo)

50 forms, 15,000 results. splitforms 3-Year ($59 every 3 years): 15,000 submissions/month for 36 months. Over three years, that's $59 vs roughly $1,170 of Formsite Professional.

The honest caveat

Formsite's higher tiers bundle features splitforms doesn't try to replicate — built-in HIPAA-friendly workflows, payment collection with native Stripe/PayPal/Authorize.net widgets, multi-page form builder, scheduling tools, registration-system features. If those are decisive for your workflow, the price is for them. If you're a developer who'd rather write HTML and POST to an endpoint, you're paying $19.50-$32.50/mo for a builder you don't use.

• “I'm hitting the 5-form cap on the free plan before I'm anywhere near the result cap.”

  splitforms removes the form-count ceiling on Pro and 3-Year; you only pay for total submission volume.

• “My form is loading in an iframe and breaking my analytics chain.”

  splitforms is a standard HTML form action — your markup, your domain, no iframe.

• “The branded footer requires a paid upgrade.”

  splitforms has no branded footer on any plan, including free.

• “I need a real REST API and webhook delivery, not just a hosted builder.”

  splitforms ships an open REST API and MCP server on every plan, with signed webhooks on paid plans.

• “AI-generated spam is getting through the CAPTCHA.”

  splitforms runs every submission through an AI classifier specifically trained on modern LLM-written form spam.

• “I want to drive form submissions from a Claude or Cursor agent.”

  splitforms ships an MCP server natively.

Step 1: sign up at splitforms.com for a free access key — no credit card required. Step 2: rebuild your form as plain HTML on your own page. For each Formsite question, write a corresponding `<input>`, `<textarea>`, or `<select>` inside `<form action="https://splitforms.com/api/submit" method="POST">`. Step 3: submit a test entry and confirm it lands in the splitforms dashboard and owner inbox.

If you were embedding Formsite via iframe (`<iframe src="https://www.formsite.com/...">`), the migration is to remove the iframe and replace it with a real HTML form on the page. This takes longer than a simple URL swap — you're replacing a hosted experience with markup you own — but it's a one-time cost and you end up with a faster page that doesn't depend on Formsite's runtime.

If you were using Formsite's built-in payment widgets, splitforms handles payments client-side: drop Stripe Elements into the page, capture the token, POST the full payload (form data plus payment token) to splitforms. The webhook surface then fans the submission out to your CRM, email, and order-fulfillment systems.

If you actively use Formsite's higher-tier features — HIPAA-friendly workflows, native payment widgets, multi-page conditional logic in a visual editor, scheduling, registration systems, the template catalog — and a non-technical team operates those features inside the Formsite dashboard, the migration cost outweighs any price savings. splitforms is a backend for HTML forms, not a hosted builder; asking a Formsite-trained operator to rebuild every form in HTML and move every payment flow client-side is a multi-week project that nobody will thank you for.

Same answer if your buyer is enterprise procurement and Formsite has already cleared vendor review, with a signed DPA and a multi-year contract in place. Re-running the vendor review for splitforms is itself a several-thousand-dollar internal cost that the per-month savings won't recoup quickly.

And if your forms are part of an internal-only workflow that genuinely benefits from Formsite's hosted subdomain (no public marketing page, no SEO concern, just a link you send to internal respondents), the iframe-vs-HTML distinction matters less and the migration friction matters more.

Is splitforms a true Formsite alternative? For the backend layer — POST endpoint, submission storage, dashboard, webhooks, spam filtering, file uploads, notifications — yes, with a larger free tier and cheaper paid tiers. For Formsite's visual builder, multi-page editor, and HIPAA-friendly tier, splitforms doesn't try to replicate those; you'd write the form HTML yourself.

Will my Formsite form work without the iframe? You'll need to rebuild it as HTML on your own page. Formsite's hosted builder doesn't export to a portable form-action URL the way a pure backend does.

Does splitforms support HIPAA? Not currently. If you need HIPAA-compliant medical intake forms, Formsite's HIPAA tier is the right tool for that specific workflow.

What about payment collection? splitforms handles payments client-side via Stripe Elements or similar, with the result POSTed to splitforms. More setup than Formsite's built-in widgets, dramatically more control and observability.

Is there a per-form limit on splitforms? No. Every plan — Free, Starter, Pro, and 3-Year — includes unlimited forms.

Does splitforms have a long-term plan? Yes — $59 for the 3-Year plan at 15,000 submissions/month for 36 months.