---
title: "1,115+ Free Startup, SaaS, SEO & AI Tools | FoundrList"
description: "Browse 1,100+ free interactive startup, SaaS finance, SEO/GEO, AI token cost, copywriting, and product launch tools for founders and developers."
canonical_url: "https://www.foundrlist.com/tools"
markdown_url: "https://www.foundrlist.com/tools.md"
tool_count: 1115
category_count: 10
---

# Free Startup, SaaS, SEO & AI Tools (1,115 Tools)

FoundrList provides 1,115 free, 100% client-side calculators, analyzers, generators, and checklists for SaaS founders, indie hackers, and developers. Every tool also exposes a clean Markdown twin (`/tools/{slug}.md`) for AI agents.

## Tool Categories
- **[SaaS & Startup Finance](https://www.foundrlist.com/tools/category/saas-finance)** ([.md](https://www.foundrlist.com/tools/category/saas-finance.md)) — 154 free tools: Calculate MRR, ARR, SaaS valuation multiples, runway, burn rate, churn, LTV:CAC, payback period, and SAFE equity dilution.
- **[SEO, GEO & AI Search](https://www.foundrlist.com/tools/category/seo-geo)** ([.md](https://www.foundrlist.com/tools/category/seo-geo.md)) — 134 free tools: Generate llms.txt, ai.txt, mcp.json, robots.txt, and JSON-LD schemas, audit meta tags, and optimize your startup for Google and AI search engines.
- **[Product Launch & Directories](https://www.foundrlist.com/tools/category/launch-marketing)** ([.md](https://www.foundrlist.com/tools/category/launch-marketing.md)) — 128 free tools: Plan high-converting launches on FoundrList, Product Hunt, Hacker News (Show HN), and Reddit, audit launch taglines, and calculate directory ROI.
- **[Copywriting, Landing Pages & CRO](https://www.foundrlist.com/tools/category/copywriting-cro)** ([.md](https://www.foundrlist.com/tools/category/copywriting-cro.md)) — 126 free tools: Grade landing page headlines, generate PAS and AIDA hero copy, audit cold email subject lines, and calculate conversion rate revenue lift.
- **[AI, LLM Tokens & Unit Economics](https://www.foundrlist.com/tools/category/ai-llm)** ([.md](https://www.foundrlist.com/tools/category/ai-llm.md)) — 111 free tools: Estimate LLM token counts, compare AI API costs and gross margins, size RAG chunks and vector databases, and format structured system prompts.
- **[Developer, Config & Security](https://www.foundrlist.com/tools/category/developer-tools)** ([.md](https://www.foundrlist.com/tools/category/developer-tools.md)) — 110 free tools: Generate cron expressions, CSP and CORS headers, next.config and vercel.json rules, test regex and webhooks, inspect JWTs, and audit Core Web Vitals.
- **[Startup Legal, Ops & Investor Docs](https://www.foundrlist.com/tools/category/founder-docs)** ([.md](https://www.foundrlist.com/tools/category/founder-docs.md)) — 100 free tools: Generate Markdown Terms of Service, GDPR/CCPA Privacy Policies, SLAs, DPAs, monthly investor updates, pitch deck outlines, and changelogs.
- **[Pricing, Fees & Monetization](https://www.foundrlist.com/tools/category/pricing-monetization)** ([.md](https://www.foundrlist.com/tools/category/pricing-monetization.md)) — 101 free tools: Compare Stripe, Paddle, Lemon Squeezy, and App Store fees, model freemium vs usage-based pricing tiers, and optimize annual discount margins.
- **[Social, Community & Outreach](https://www.foundrlist.com/tools/category/social-growth)** ([.md](https://www.foundrlist.com/tools/category/social-growth.md)) — 75 free tools: Format X/Twitter launch threads, LinkedIn founder stories, Reddit community posts, newsletter sponsorships, and viral waitlist referral loops.
- **[Product Analytics, Funnel & PMF](https://www.foundrlist.com/tools/category/analytics-metrics)** ([.md](https://www.foundrlist.com/tools/category/analytics-metrics.md)) — 76 free tools: Calculate A/B test statistical significance, Sean Ellis 40% PMF scores, NPS, CSAT, DAU/MAU stickiness, cohort retention, and activation funnels.

## Featured & Head-Term Founder Tools
- **[SaaS Valuation Calculator (ARR Multiple & Rule of 40)](https://www.foundrlist.com/tools/saas-valuation-calculator)** ([.md](https://www.foundrlist.com/tools/saas-valuation-calculator.md)) — Calculate your SaaS startup valuation from MRR/ARR, YoY growth rate, net dollar retention (NRR), and gross margin using 2026 private & public SaaS multiples. (SaaS & Startup Finance)
- **[MRR to ARR & SaaS Growth Forecast Calculator](https://www.foundrlist.com/tools/mrr-to-arr-calculator)** ([.md](https://www.foundrlist.com/tools/mrr-to-arr-calculator.md)) — Convert Monthly Recurring Revenue (MRR) to Annual Run Rate (ARR) and model 12-month compounding SaaS growth. (SaaS & Startup Finance)
- **[SaaS LTV:CAC Ratio & Customer Lifetime Value Calculator](https://www.foundrlist.com/tools/ltv-cac-calculator)** ([.md](https://www.foundrlist.com/tools/ltv-cac-calculator.md)) — Calculate Customer Lifetime Value (LTV), LTV to CAC ratio, and CAC payback period in months from ARPU, gross margin, and churn. (SaaS & Startup Finance)
- **[Startup Runway, Burn Rate & Default Alive Calculator](https://www.foundrlist.com/tools/startup-runway-calculator)** ([.md](https://www.foundrlist.com/tools/startup-runway-calculator.md)) — Calculate how many months of cash runway your startup has left and check whether you are Default Alive or Default Dead. (SaaS & Startup Finance)
- **[Stripe Fee Calculator (2.9% + $0.30 & Net Payout)](https://www.foundrlist.com/tools/stripe-fee-calculator)** ([.md](https://www.foundrlist.com/tools/stripe-fee-calculator.md)) — Calculate Stripe payment processing fees, effective take rate, and net payout per transaction or monthly subscription volume. (Pricing, Fees & Monetization)
- **[llms.txt & llms-full.txt Generator for AI Search (GEO)](https://www.foundrlist.com/tools/llms-txt-generator)** ([.md](https://www.foundrlist.com/tools/llms-txt-generator.md)) — Generate a clean, spec-compliant /llms.txt file for your website or SaaS so ChatGPT, Claude, Perplexity, and Grok cite your pages. (SEO, GEO & AI Search)
- **[ai.txt Generator (v1.1.1 AI Permissions & Attribution Spec)](https://www.foundrlist.com/tools/ai-txt-generator)** ([.md](https://www.foundrlist.com/tools/ai-txt-generator.md)) — Create a compliant /ai.txt file declaring AI crawler permissions, restricted routes, and canonical attribution requirements. (SEO, GEO & AI Search)
- **[robots.txt Generator for Google & AI Search Bots (GPTBot, ClaudeBot, PerplexityBot)](https://www.foundrlist.com/tools/robots-txt-generator)** ([.md](https://www.foundrlist.com/tools/robots-txt-generator.md)) — Build a production robots.txt that allows Googlebot and AI answer engines (OAI-SearchBot, ClaudeBot, PerplexityBot) while protecting private routes. (SEO, GEO & AI Search)
- **[JSON-LD Schema Markup Generator (SoftwareApplication, FAQPage & OfferCatalog)](https://www.foundrlist.com/tools/json-ld-schema-generator)** ([.md](https://www.foundrlist.com/tools/json-ld-schema-generator.md)) — Generate validated Schema.org JSON-LD structured data for SaaS products, pricing pages, and FAQs. (SEO, GEO & AI Search)
- **[Product Hunt & FoundrList Launch Tagline Checker (60-Char Grader)](https://www.foundrlist.com/tools/product-hunt-tagline-checker)** ([.md](https://www.foundrlist.com/tools/product-hunt-tagline-checker.md)) — Test your startup launch tagline against the 60-character directory limit, clarity benchmarks, and high-CTR value proposition rules. (Product Launch & Directories)
- **[Hacker News 'Show HN' Title & Maker Comment Generator](https://www.foundrlist.com/tools/show-hn-post-generator)** ([.md](https://www.foundrlist.com/tools/show-hn-post-generator.md)) — Format a technical, zero-hype Show HN title and first comment that resonates with Hacker News engineers and founders. (Product Launch & Directories)
- **[Startup Directory Submission ROI & DR Backlink Calculator](https://www.foundrlist.com/tools/directory-submission-roi-calculator)** ([.md](https://www.foundrlist.com/tools/directory-submission-roi-calculator.md)) — Estimate organic search traffic, Domain Rating (DR) lift, and customer acquisition ROI from submitting your startup to 100+ curated directories. (Product Launch & Directories)
- **[LLM Token Counter & AI API Margin Calculator](https://www.foundrlist.com/tools/llm-token-counter-cost-calculator)** ([.md](https://www.foundrlist.com/tools/llm-token-counter-cost-calculator.md)) — Estimate monthly token usage, inference API bill, and SaaS gross margin across OpenAI GPT-4o, Claude Sonnet, Gemini, and Grok. (AI, LLM Tokens & Unit Economics)
- **[A/B Test Statistical Significance & Conversion Lift Calculator](https://www.foundrlist.com/tools/ab-test-statistical-significance-calculator)** ([.md](https://www.foundrlist.com/tools/ab-test-statistical-significance-calculator.md)) — Calculate Z-score statistical confidence, relative conversion rate lift, and annualized revenue impact from landing page A/B experiments. (Product Analytics, Funnel & PMF)
- **[SaaS Landing Page Headline Analyzer & Hero Copy Grader](https://www.foundrlist.com/tools/landing-page-headline-analyzer)** ([.md](https://www.foundrlist.com/tools/landing-page-headline-analyzer.md)) — Score your startup landing page hero headline for clarity, outcome specificity, reading grade, and conversion power. (Copywriting, Landing Pages & CRO)
- **[B2B SaaS Valuation Calculator](https://www.foundrlist.com/tools/b2b-saas-valuation-calculator)** ([.md](https://www.foundrlist.com/tools/b2b-saas-valuation-calculator.md)) — Calculate your B2B SaaS startup valuation using ARR multiples, YoY growth rate, net revenue retention (NRR), and Rule of 40 benchmarks. (SaaS & Startup Finance)
- **[AI SaaS Valuation Calculator](https://www.foundrlist.com/tools/ai-saas-valuation-calculator)** ([.md](https://www.foundrlist.com/tools/ai-saas-valuation-calculator.md)) — Calculate your AI SaaS startup valuation using ARR multiples, YoY growth rate, net revenue retention (NRR), and Rule of 40 benchmarks. (SaaS & Startup Finance)
- **[B2B SaaS LTV:CAC & Payback Period Calculator](https://www.foundrlist.com/tools/b2b-saas-ltv-cac-calculator)** ([.md](https://www.foundrlist.com/tools/b2b-saas-ltv-cac-calculator.md)) — Model Customer Lifetime Value (LTV), LTV:CAC ratio, and CAC payback months for your B2B SaaS business. (SaaS & Startup Finance)
- **[AI SaaS LTV:CAC & Payback Period Calculator](https://www.foundrlist.com/tools/ai-saas-ltv-cac-calculator)** ([.md](https://www.foundrlist.com/tools/ai-saas-ltv-cac-calculator.md)) — Model Customer Lifetime Value (LTV), LTV:CAC ratio, and CAC payback months for your AI SaaS business. (SaaS & Startup Finance)
- **[B2B SaaS Runway, Burn Rate & Default Alive Calculator](https://www.foundrlist.com/tools/b2b-saas-runway-burn-rate-calculator)** ([.md](https://www.foundrlist.com/tools/b2b-saas-runway-burn-rate-calculator.md)) — Calculate cash runway in months, net monthly burn, burn multiple, and Paul Graham 'Default Alive' status for your B2B SaaS startup. (SaaS & Startup Finance)
- **[AI SaaS Runway, Burn Rate & Default Alive Calculator](https://www.foundrlist.com/tools/ai-saas-runway-burn-rate-calculator)** ([.md](https://www.foundrlist.com/tools/ai-saas-runway-burn-rate-calculator.md)) — Calculate cash runway in months, net monthly burn, burn multiple, and Paul Graham 'Default Alive' status for your AI SaaS startup. (SaaS & Startup Finance)
- **[B2B SaaS MRR to ARR & 12-Month Forecast Calculator](https://www.foundrlist.com/tools/b2b-saas-mrr-arr-growth-forecast-calculator)** ([.md](https://www.foundrlist.com/tools/b2b-saas-mrr-arr-growth-forecast-calculator.md)) — Forecast 12-month MRR, ARR, expansion revenue, and net new ARR for your B2B SaaS product. (SaaS & Startup Finance)
- **[AI SaaS MRR to ARR & 12-Month Forecast Calculator](https://www.foundrlist.com/tools/ai-saas-mrr-arr-growth-forecast-calculator)** ([.md](https://www.foundrlist.com/tools/ai-saas-mrr-arr-growth-forecast-calculator.md)) — Forecast 12-month MRR, ARR, expansion revenue, and net new ARR for your AI SaaS product. (SaaS & Startup Finance)
- **[B2B SaaS Churn Rate & Net Revenue Retention Calculator](https://www.foundrlist.com/tools/b2b-saas-churn-retention-impact-calculator)** ([.md](https://www.foundrlist.com/tools/b2b-saas-churn-retention-impact-calculator.md)) — Quantify how reducing monthly churn by 1–2% compounds ARR and enterprise valuation for your B2B SaaS company. (SaaS & Startup Finance)
- **[AI SaaS Churn Rate & Net Revenue Retention Calculator](https://www.foundrlist.com/tools/ai-saas-churn-retention-impact-calculator)** ([.md](https://www.foundrlist.com/tools/ai-saas-churn-retention-impact-calculator.md)) — Quantify how reducing monthly churn by 1–2% compounds ARR and enterprise valuation for your AI SaaS company. (SaaS & Startup Finance)
- **[B2B SaaS Rule of 40 & SaaS Magic Number Calculator](https://www.foundrlist.com/tools/b2b-saas-rule-of-40-magic-number-calculator)** ([.md](https://www.foundrlist.com/tools/b2b-saas-rule-of-40-magic-number-calculator.md)) — Benchmark your B2B SaaS startup's Rule of 40 efficiency score (YoY ARR growth + EBITDA/FCF margin) and sales efficiency. (SaaS & Startup Finance)
- **[AI SaaS Rule of 40 & SaaS Magic Number Calculator](https://www.foundrlist.com/tools/ai-saas-rule-of-40-magic-number-calculator)** ([.md](https://www.foundrlist.com/tools/ai-saas-rule-of-40-magic-number-calculator.md)) — Benchmark your AI SaaS startup's Rule of 40 efficiency score (YoY ARR growth + EBITDA/FCF margin) and sales efficiency. (SaaS & Startup Finance)
- **[SaaS Startup llms.txt Generator](https://www.foundrlist.com/tools/saas-startup-llms-txt-generator)** ([.md](https://www.foundrlist.com/tools/saas-startup-llms-txt-generator.md)) — Generate a spec-compliant /llms.txt file for your SaaS Startup so ChatGPT, Claude, Perplexity, and Grok index and cite your product accurately. (SEO, GEO & AI Search)
- **[SaaS Startup llms-full.txt Single-File Corpus Builder](https://www.foundrlist.com/tools/saas-startup-llms-full-txt-generator)** ([.md](https://www.foundrlist.com/tools/saas-startup-llms-full-txt-generator.md)) — Compile your SaaS Startup's core pages, pricing, docs, and API endpoints into a single /llms-full.txt Markdown corpus for LLM ingestion. (SEO, GEO & AI Search)
- **[SaaS Startup ai.txt Permissions & Attribution Generator](https://www.foundrlist.com/tools/saas-startup-ai-txt-generator)** ([.md](https://www.foundrlist.com/tools/saas-startup-ai-txt-generator.md)) — Build an ai-txt v1.1.1 policy file (/ai.txt) for your SaaS Startup declaring AI search permissions, restricted paths, and canonical attribution. (SEO, GEO & AI Search)
- **[SaaS Startup robots.txt Generator for AI Crawlers (GPTBot, ClaudeBot, PerplexityBot)](https://www.foundrlist.com/tools/saas-startup-robots-txt-ai-crawler-generator)** ([.md](https://www.foundrlist.com/tools/saas-startup-robots-txt-ai-crawler-generator.md)) — Generate a production robots.txt for your SaaS Startup that welcomes AI search bots (OAI-SearchBot, Claude-SearchBot, PerplexityBot) while blocking private routes. (SEO, GEO & AI Search)
- **[SaaS Startup SoftwareApplication JSON-LD Schema Generator](https://www.foundrlist.com/tools/saas-startup-software-application-json-ld-generator)** ([.md](https://www.foundrlist.com/tools/saas-startup-software-application-json-ld-generator.md)) — Generate rich Schema.org SoftwareApplication JSON-LD markup for your SaaS Startup to win rich snippets in Google Search and AI Overviews. (SEO, GEO & AI Search)
- **[SaaS Startup FAQPage JSON-LD Schema Generator](https://www.foundrlist.com/tools/saas-startup-faq-page-json-ld-schema-generator)** ([.md](https://www.foundrlist.com/tools/saas-startup-faq-page-json-ld-schema-generator.md)) — Create validated FAQPage structured data for your SaaS Startup pricing and landing pages to capture high-intent answer engine citations. (SEO, GEO & AI Search)
- **[SaaS Startup Pricing OfferCatalog JSON-LD Generator](https://www.foundrlist.com/tools/saas-startup-offer-catalog-pricing-json-ld-generator)** ([.md](https://www.foundrlist.com/tools/saas-startup-offer-catalog-pricing-json-ld-generator.md)) — Serialize your SaaS Startup pricing tiers into Schema.org Service & OfferCatalog JSON-LD so search engines and shopping agents read exact plan prices. (SEO, GEO & AI Search)
- **[SaaS Startup /.well-known/mcp.json Discovery Manifest Generator](https://www.foundrlist.com/tools/saas-startup-mcp-json-manifest-generator)** ([.md](https://www.foundrlist.com/tools/saas-startup-mcp-json-manifest-generator.md)) — Generate a /.well-known/mcp.json manifest advertising your SaaS Startup's public API endpoints, OAuth server, and Markdown twin catalog to AI agents. (SEO, GEO & AI Search)
- **[FoundrList Launch Post & Maker Comment Generator for AI SaaS](https://www.foundrlist.com/tools/foundrlist-ai-saas-post-generator)** ([.md](https://www.foundrlist.com/tools/foundrlist-ai-saas-post-generator.md)) — Generate a high-converting FoundrList Launch title, 60-character tagline, and authentic maker comment tailored for AI SaaS products. (Product Launch & Directories)
- **[B2B SaaS Landing Page Hero Headline Grader](https://www.foundrlist.com/tools/b2b-saas-landing-page-headline-grader)** ([.md](https://www.foundrlist.com/tools/b2b-saas-landing-page-headline-grader.md)) — Analyze and optimize your B2B SaaS copy using the Landing Page Hero Headline Grader with instant conversion scoring and rewrite suggestions. (Copywriting, Landing Pages & CRO)
- **[Anthropic Claude Sonnet Cost & Gross Margin Calculator for AI Coding Copilot SaaS](https://www.foundrlist.com/tools/claude-sonnet-api-coding-copilot-saas-cost-margin-calculator)** ([.md](https://www.foundrlist.com/tools/claude-sonnet-api-coding-copilot-saas-cost-margin-calculator.md)) — Calculate monthly token consumption, API inference spend, and SaaS gross margin when powering a AI Coding Copilot SaaS with Anthropic Claude Sonnet. (AI, LLM Tokens & Unit Economics)
- **[Next.js App Router Content-Security-Policy (CSP) & HTTP Security Headers Builder](https://www.foundrlist.com/tools/nextjs-app-router-security-headers-csp-generator)** ([.md](https://www.foundrlist.com/tools/nextjs-app-router-security-headers-csp-generator.md)) — Generate and validate content-security-policy (csp) & http security headers builder snippets for Next.js App Router applications right in your browser. (Developer, Config & Security)
- **[B2B SaaS Monthly Investor Update Email & Metrics Template](https://www.foundrlist.com/tools/b2b-saas-monthly-investor-update-email-generator)** ([.md](https://www.foundrlist.com/tools/b2b-saas-monthly-investor-update-email-generator.md)) — Generate a clean, structured monthly investor update email & metrics template in Markdown tailored for B2B SaaS companies. (Startup Legal, Ops & Investor Docs)

## Launch Your Product on FoundrList
- [Launch with Ghosty AI](https://www.foundrlist.com/agent) ([Markdown](https://www.foundrlist.com/agent.md))
- [Pricing & 100-Directory Submission ($97)](https://www.foundrlist.com/pricing) ([Markdown](https://www.foundrlist.com/pricing.md))