At-a-glance: top 10 SaaS lead generation forms
Scored on the criteria that actually move SaaS landing-page conversion: free-tier headroom, embed weight, A/B test friendliness, webhook support, and CRM/payment integrations. splitforms ranks first for code-first SaaS teams; the rest are valid in specific contexts noted in each review.
| # | Tool | Free tier | Cheapest paid | Webhooks free | Best for |
|---|---|---|---|---|---|
| 1 | splitforms | 1,000/mo | $5/mo | Yes | Code-first SaaS landing pages |
| 2 | HubSpot Forms | Unlimited (with HubSpot) | $20/mo Starter | Paid plan | Teams already on HubSpot CRM |
| 3 | Marketo Forms | None | $1,250/mo+ | Yes | Enterprise demand gen |
| 4 | Pardot (Account Engagement) | None | $1,250/mo+ | Yes | Salesforce-native B2B |
| 5 | FormTitan | Limited | $24/mo | Paid plan | Complex conditional logic |
| 6 | Typeform | 10 responses/mo | $25/mo | Paid plan | Conversational qualifying flows |
| 7 | Calendly + form combo | Calendly free | $10/mo Calendly | N/A | Demo-booking funnels |
| 8 | ConvertFlow | 250 visitors/mo | $22/mo | Yes | No-code popups + A/B testing |
| 9 | Unbounce Forms | None | $99/mo | Paid plan | Landing-page-builder users |
| 10 | Tally embed | Unlimited | $29/mo | Paid plan | No-code MVPs |
How we picked (scoring criteria)
Most "best of" lists score on feature count. That's the wrong frame for SaaS landing pages, where the form is one piece of a conversion funnel optimized for paid traffic. We scored each tool on five things that move signup-rate or pipeline:
- Embed weight. Bytes added to your landing page. Iframe widgets cost 80-300KB. Plain HTML forms cost zero. This shows up in LCP and Lighthouse scores, which Google now factors into Quality Score for Search Ads.
- A/B test friendliness. Can you swap headline, CTA, or fields per variant without rebuilding the form? Lightweight HTML forms win. Locked-in iframe forms lose.
- Free-tier headroom. How many submissions before you have to upgrade. Critical for pre-PMF SaaS where every dollar matters.
- Integration honesty. Does the "HubSpot integration" mean a real-time API call, or a nightly CSV sync? For lead routing, real-time matters.
- Conversion-focused features. Multi-step, exit intent, progressive profiling, pre-fill from UTM. Not every tool needs them, but the ones that have them well-implemented win when you need them.
We did not score on "number of templates" or "drag-and-drop builder" — SaaS landing pages are coded by engineers or designed in Figma, not assembled in form builders. If your stack is genuinely no-code (Webflow, Framer, Carrd), see top 10 no-code form builders instead.
1. splitforms — the code-first pick
Pricing: Free 1,000 submissions/month. Pro $5/mo for 5,000. $59 for 4 years (averaged $1.23/mo).
splitforms is a form-to-email backend. You write a plain HTML form on your landing page, point its action at splitforms.com/api/submit, and submissions land in your inbox plus the dashboard. No widget loader, no iframe, no script tag. Zero bytes added to your page.
For SaaS landing pages, that matters because (a) every Lighthouse point is real money on paid traffic, and (b) you can A/B test headline + CTA + field count without rebuilding inside a vendor's UI. The form is just markup in your repo.
What's good
- Webhooks free — pipe submissions to HubSpot, Stripe, Slack, or your own service.
- AI spam classification on free tier (most competitors paywall this).
- Custom SMTP — deliverability is whatever you configure (Gmail, SES, Postmark).
- MCP endpoint so Claude / ChatGPT agents can query and act on submissions.
- Framework-native examples for Next.js, React, Astro, Svelte, and Vue.
What's missing
- No built-in A/B test UI — you bring your own experimentation layer (Vercel, GrowthBook, etc.).
- No drag-and-drop builder. By design — you're coding the landing page anyway.
Verdict: the recommended pick for any SaaS landing page where speed and cost matter. Grab a key at splitforms.com/login — free forever, no credit card.
<form action="https://splitforms.com/api/submit" method="POST">
<input type="hidden" name="access_key" value="YOUR_ACCESS_KEY" />
<input type="hidden" name="variant" value="A" />
<input type="email" name="work_email" required placeholder="Work email" />
<input type="text" name="company" required placeholder="Company" />
<input type="checkbox" name="botcheck" style="display:none" tabindex="-1" />
<button type="submit">Book a demo</button>
</form>2. HubSpot Forms
Pricing: bundled with HubSpot. Free CRM tier includes basic forms; Marketing Hub Starter $20/mo unlocks progressive profiling and smart fields.
If your sales team lives in HubSpot, HubSpot Forms are convenient — submissions auto-create contacts and trigger workflows. The downside is the embed: HubSpot's form script loads 200KB+ and the rendered form is an iframe. On a landing page tuned for paid traffic, that's measurable damage to LCP and CLS.
What's good: progressive profiling is genuinely well-built, and the CRM round-trip is real-time. What's missing: you can't easily A/B test the form itself, and the embedded form pulls visual styling that fights your design system.
Verdict: use HubSpot Forms for gated PDFs and webinar registrations inside the HubSpot ecosystem. For speed-critical SaaS landing pages, use splitforms with a webhook into HubSpot's contacts API — see send form submissions to HubSpot.
3. Marketo Forms (Adobe Marketo Engage)
Pricing: custom enterprise — Marketo packages start around $1,250/mo and climb fast.
Marketo Forms are the enterprise demand-gen incumbent. They're feature-rich: progressive profiling, hidden-field manipulation by visitor segment, real-time MAP enrolment, smart lists. If you have a six-figure marketing budget and a dedicated MOPS team, Marketo earns its keep.
For everyone else, Marketo is overkill. The form embed is heavy, the JS API is dated, and integrations require a Marketo-fluent admin. We score it #3 because in the enterprise SaaS context where Marketo lives, it is genuinely the best tool for the job — but most readers of this post are not in that context.
Verdict: enterprise B2B SaaS with a Marketo footprint already. For everyone else, the cost-to-feature ratio doesn't work.
4. Pardot (Salesforce Account Engagement)
Pricing: from $1,250/mo (Growth tier) on top of Salesforce.
Pardot — now Salesforce Account Engagement — is the Salesforce-native counterpart to Marketo. The argument for it is identical: if you live in Salesforce, Pardot's forms auto-create leads, enrol them in journeys, and round-trip with Sales Cloud reporting.
The form-builder UX is dated (it's been polished but the bones are old). Form embed weight is similar to Marketo — heavy, iframe-based. A/B testing the form copy means setting up two separate Pardot forms, which is friction. Pardot earns its place on this list because for Salesforce-shop SaaS companies, the integration depth is unmatched.
Verdict: Salesforce-shop B2B SaaS. Not the right pick for landing pages where speed matters more than CRM integration depth.
5. FormTitan
Pricing: limited free tier; paid from $24/mo.
FormTitan is the conditional-logic specialist. If your SaaS qualifying flow has 15 branches — "if company size > 500 show enterprise field, else show SMB field, unless industry is healthcare in which case route to compliance flow" — FormTitan handles it without scripting. Salesforce integration is solid; HIPAA-grade compliance is available on paid tiers.
What's missing: it's still an iframe-style embed, the builder is opinionated, and pricing climbs fast once you add seats and Salesforce sync. The free tier is limited enough that you'll hit upgrades quickly.
Verdict: good fit when conditional logic is the dominant requirement. For most SaaS landing-page forms (5-6 fields, no branching) it's overkill.
6. Typeform
Pricing: 10 responses/month free; paid from $25/mo Basic.
Typeform is the conversational form pioneer. One question per screen, animated transitions, designed to feel like a chat. For top-of-funnel qualifying — "tell us about your team" style flows — the format genuinely outperforms a static form for engagement, though completion rates trail behind for simple intents.
What's good: the design is best-in-class, the logic builder is approachable, and the integrations catalog is broad. What's missing: the 10/month free cap is borderline insulting, embed weight is heavy, and the iframe doesn't compose well with the rest of your page. If you want the Typeform aesthetic without the cost, see best Typeform alternatives or our migrate from Typeform guide.
Verdict: reach for it when the form itself is the experience (long qualifying flows, surveys). Skip for a 4-field demo request.
7. Calendly + form combo
Pricing: Calendly free for basic, $10/mo Standard for routing and forms.
The Calendly combo is a pattern, not a single tool. You collect the lead's email and qualifying answers, then hand them straight to a Calendly booking widget. The handoff converts well — leads who book a meeting in the same session show up 2-3x more often than leads who get a "we'll be in touch" confirmation.
Best implementation: splitforms captures the lead and pings your CRM via webhook, then a Calendly inline embed loads on the thank-you state. Calendly's own Routing Forms can do this end-to-end, but the lead data lives in Calendly, which is a poor system of record. Use splitforms for capture; use Calendly for booking.
Verdict: mandatory pattern for any SaaS funnel that ends in a sales demo. Don't pick between Calendly and a form — use both.
8. ConvertFlow
Pricing: free for 250 visitors/mo; paid from $22/mo.
ConvertFlow is the no-code popup / sticky-bar / exit-intent specialist. If your conversion stack needs exit-intent overlays, scroll-triggered CTAs, and embedded forms managed by a marketer (not an engineer), ConvertFlow earns its slot.
What's good: the builder is genuinely no-code, the A/B test UI is built in, and you can deploy a popup without a deploy. What's missing: it loads a script tag (40-90KB) that runs on every page, and pricing scales by traffic volume — not submissions — so growth gets expensive fast.
Verdict: good when non-engineers need to ship popups solo. For exit intent on a single landing page, a 30-line vanilla JS listener + splitforms costs nothing and is faster.
9. Unbounce Forms
Pricing: from $99/mo Launch.
Unbounce is a landing-page builder; the forms are a feature, not a product. If your landing pages live in Unbounce, the built-in forms compose well with the page templates, A/B testing is one click, and Smart Traffic auto-routes visitors to better-converting variants.
What's missing for SaaS specifically: Unbounce templates lean toward agency / e-commerce / consumer SaaS aesthetics. Technical B2B SaaS landing pages usually outgrow the template library and end up custom-coded anyway, at which point Unbounce becomes overhead.
Verdict: matters if Unbounce is already your landing-page host. Not a reason to switch hosts. Pricing at $99/mo entry is hard to justify versus splitforms at $5/mo plus a static page on Vercel.
10. Tally embed
Pricing: free for unlimited submissions; Pro from $29/mo for branding removal and custom domains.
Tally is the surprise of the list. It's Notion-style, unlimited free submissions, decent embed weight, and the builder is fast. For a pre-launch SaaS MVP where you want a form up in five minutes and don't care about backend logic, Tally is hard to beat.
What's missing for SaaS landing pages: the embed is still an iframe, custom CSS requires paid plans, and once you outgrow the basics (webhooks, signature verification, CRM round-trip), you'll migrate. Tally is the no-code answer; splitforms is the code-first answer. We have a direct splitforms vs Tally comparison if you want the side-by-side, and a broader Tally alternatives piece.
Verdict: best no-code option on this list. The fastest way to ship a form when you don't care about backend control. Plan for migration when you outgrow it.
Conversion-focused features: where each tool wins
Five features move SaaS landing-page conversion in measurable ways. Here's where each is best-implemented across the ten tools:
- A/B testing. Best: splitforms with Vercel Edge Config or GrowthBook. Honorable mention: Unbounce Smart Traffic. Worst: iframe-style embeds where you can't swap the form per variant.
- Exit intent. Best: ConvertFlow (no-code) or a hand-rolled vanilla JS + splitforms (code). Worst: enterprise platforms that bundle it behind a $1,000/mo tier.
- Multi-step. Best: Typeform (when the form is the experience), splitforms with a simple state machine (when you control the page). FormTitan if conditional branching dominates.
- Progressive profiling. Best: HubSpot, Marketo, Pardot — they own the identity layer. DIY-friendly: splitforms with cookie + email-hash. See the FAQ below for the pattern.
- UTM + referrer pre-fill. Best: anything code-first (splitforms, Tally embed with hidden fields). Worst: tools that abstract away URL params and force you to re-add them via integrations.
The pattern across all five: if your team can write JavaScript, you almost always get better conversion-focused features by combining a lightweight backend (splitforms) with whatever experimentation / popup layer you already use. The all-in-one platforms charge for convenience.
Which one should you pick? Decision tree
- You have engineers and care about Lighthouse: splitforms. Sign up at splitforms.com/login.
- You live in HubSpot CRM already: HubSpot Forms for gated content, splitforms + webhook for landing pages. Hybrid wins.
- You're enterprise B2B SaaS with Marketo or Salesforce: Marketo or Pardot. The integration depth justifies the cost.
- Your form is a 12-step qualifying flow: Typeform (conversational) or FormTitan (conditional).
- Your funnel ends in a sales demo: splitforms for capture + Calendly for booking. Combo, not either-or.
- Non-engineers need to ship popups solo: ConvertFlow.
- Your landing pages already live in Unbounce: Unbounce Forms.
- Pre-launch MVP, want a form up in 5 minutes, no engineers: Tally embed.
For most SaaS readers on this post — Series Seed to Series B, technical co-founder or in-house engineering — the answer is splitforms plus whichever CRM you've already paid for, connected via webhook. That stack is < $10/mo and outperforms $1,000/mo platforms on landing-page speed.
How to switch: the 10-minute migration
If you're moving from any tool on this list to splitforms, the migration is the same shape:
- Sign up at splitforms.com/login — free, no card.
- Copy your access key from the dashboard.
- Replace the existing form embed with a plain HTML form. Field names stay whatever you want.
- Add a webhook in the splitforms dashboard pointing to your CRM (HubSpot, Salesforce, Pipedrive). See send to HubSpot or connect via Zapier.
- Deploy. Test with a real submission. Confirm CRM contact created.
For specific migration paths: Formspree, Typeform. If you want a pre-built starter, grab a free contact form template. Docs: /docs and /api-reference. Common questions: /faq. Browse more comparisons on the blog.
FAQ
What actually moves SaaS lead form conversion rates?
Three things, in order of impact: form length (every required field above three drops conversion 5-8%), perceived speed (forms that render and submit in under 200ms convert 15-20% better than embedded iframes), and pre-fill (UTM, referrer, and known-email pre-fill cuts abandonment in half). A/B testing copy and CTA buttons matters too, but only after you've fixed the first three. Most teams jump to A/B testing variations of a heavy 8-field form when they should be cutting fields and ditching the iframe embed first.
Do I need a multi-step form for SaaS demos?
Only if your team genuinely needs 6+ fields. For a basic demo request (email, company, role), a single-step form converts 20-30% better than the same fields split across steps. Multi-step shines when you're qualifying — fields like company size, current stack, budget tier. Below 5 fields, multi-step is theater. Above 6, multi-step recovers the abandonment you'd otherwise lose to scroll fatigue. The break-even is around 5 fields.
How does splitforms handle A/B testing if it's just a form-to-email backend?
splitforms doesn't run the A/B test for you — it captures the variant in a hidden field. Pattern: your front-end frameworks (Vercel, Optimizely, GrowthBook, or a hand-rolled cookie split) decide variant A or B, render the matching headline / CTA / field set, and include <code>variant=A</code> as a hidden input. splitforms records it with the submission so you can slice conversion data downstream. This keeps the backend dumb and the experimentation layer where it belongs — in your edge or analytics stack.
Should I use HubSpot Forms if I already pay for HubSpot CRM?
Use them for gated content where you want auto-enrolment in workflows. Don't use them as your primary SaaS landing page form. HubSpot's embed adds 200KB+ of script and renders an iframe that hurts CLS and LCP. The cleaner pattern is splitforms (or any lightweight backend) on the landing page, then a webhook into HubSpot's contacts API. You keep landing-page speed and still get the CRM enrolment. We document the exact webhook pattern in our send-form-submissions-to-hubspot guide.
What's the cheapest way to add exit-intent capture to a SaaS landing page?
A vanilla JS mouseleave listener plus a splitforms-backed modal. About 30 lines of code. Tools like ConvertFlow charge $30-$300/month for the same outcome — they're worth it only if non-engineers need to manage popups without a deploy. If your team has even one front-end engineer, the build-yourself path is faster, cheaper, and faster-loading. The actual conversion lift from exit intent is 2-5% incremental signups; budget accordingly.
Does form length really matter that much for B2B SaaS leads?
Yes — but not the way most blogs say. The studies that claim 'every field cuts conversion 11%' are mostly e-commerce data. For B2B SaaS, the cliff is between field 3 and field 4 (work email, company, role is the sweet spot). Field 5 (phone, company size) costs you 8-12%. Field 6+ falls off faster. The fix isn't 'always be shorter' — it's 'collect the minimum to route the lead, then enrich asynchronously with Clearbit / Apollo / your enrichment vendor of choice'.
Can I do progressive profiling without HubSpot or Marketo?
Yes. Progressive profiling is just 'don't ask returning visitors the same questions twice'. Set a cookie or use localStorage with the email-hash as a key. On return visit, hide the fields you already have answers for and show new ones. splitforms doesn't gate this — you control which fields render. Marketo and HubSpot package this with their CRM, which is convenient if you already pay for them, but it's not magic technology. The hard part is identity resolution across devices, which is genuinely Marketo territory if you need it.
Why is splitforms #1 for SaaS landing page forms specifically?
Three reasons. First, code-first: your landing page is already React / Next / Astro, and splitforms drops in as a plain HTML form action without a widget loader. Second, cost — 1,000 submissions/month free covers most pre-PMF SaaS, $5/mo Pro covers 5,000, and $59 for 4 years covers the next stage. HubSpot and Marketo start at $800-$1,250/month. Third, the developer features SaaS teams actually need (webhooks, signed payloads, MCP for AI agents, custom SMTP) are on the free tier, not paywalled.