Free tools
Free tools for founders
Quick, free tools to validate your startup and save time. No sign-up required.
Community and discovery
Find where your customers talk, post, and engage. (6 tools)
Reddit shadowban checker
Check if a Reddit username is shadowbanned or invisible. Uses Reddit’s public API; no login required.
Use toolBest time to post on Reddit
Find the best time to post on any subreddit. Activity by hour, engagement stats, and trending keywords from the last 100 posts.
Use toolBest time to post on Hacker News
Find the best times to post on HN from the last 500 stories. Activity heatmap, engagement stats, and trending keywords.
Use toolBluesky analytics
Free Bluesky profile analyzer. Engagement metrics, top posts, activity patterns, and follower stats for any public profile.
Use toolReddit user analyzer
Deeper Reddit profile analytics: engagement metrics, top subreddits, activity by hour, and recent posts and comments.
Use toolGitHub repository analyzer
Analyze any public GitHub repository: star and fork counts, commit activity trend, language breakdown, and top contributors.
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SEO and web diagnostics
Audit your site for search engines, crawlers, and AI. (10 tools)
SSL certificate checker
Check TLS certificate validity, expiry date, issuer, and SANs for any public domain. Quick HTTPS health check, no sign-up.
Use toolGoogle indexing checker
Check robots.txt and sitemap.xml in one pass: crawl rules, Sitemap lines, and whether your default sitemap is declared.
Use toolLLM SEO and GEO site analyzer
Inspect llms.txt, AI crawler rules, JSON-LD schema, and semantic HTML for generative search readiness.
Use toolAI citation checker
Check whether your site gives AI assistants like ChatGPT and Claude what they need to cite it, and what to fix first.
Use toolOG share image checker
Verify Open Graph and Twitter Card images load and are large enough for rich social previews.
Use toolMeta tags checker
Review HTML title, meta description, OG and Twitter tags, and canonical URL for any public page.
Use toolFavicon checker
Detect favicon, Apple touch icon, and web manifest links, and confirm each asset resolves.
Use toolSitemap.xml validator
Fetch /sitemap.xml, validate XML, count URLs, and spot lastmod and optional fields.
Use toolDNS lookup
Check DNS records for any domain: A, AAAA, MX, TXT, NS, CNAME, and SOA. Free, no sign-up required.
Use toolHTTP headers checker
Inspect HTTP response headers for any public URL: security score, cache policy, content type, and all raw headers.
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Growth and brand
Validate your name, plan your launch, and grow smarter. (8 tools)
Name and brand availability checker
Check if your startup or product name is available as a domain and on 13+ platforms, from Reddit and GitHub to Instagram and TikTok, in one click.
Use toolBuyer intent phrase generator
Generate the phrases your customers type into Reddit, Hacker News, X, and Stack Overflow, so you know which problems are worth solving.
Use toolTime saved calculator
See how many hours you spend on manual customer discovery each month and how much time you could save.
Use toolCompany email finder
Enter a company domain and get up to 5 contact emails in one click. Personal and generic addresses with confidence scores.
Use toolPolicy generator
Starter Privacy Policy, Terms and Conditions, and Refund policy in one Markdown file, filled from your business details in the browser.
Use toolEmail validator
Check format, domain, disposable and free-mail signals, and deliverability hints for a single address. No sign-up required.
Use toolCurrency converter
Convert amounts between major currencies and common crypto. Handy for pricing, payouts, and travel, no sign-up.
Use toolUTM link builder
Build UTM tracking URLs for Google Analytics 4 or any analytics platform. Fill in source, medium, and campaign, then copy.
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The tools page is genuinely helpful, especially for early-stage founders trying to figure out customer discovery and validation. I liked how everything is organized in one place - it saves a lot of time instead of jumping between random resources online. It's straightforward, practical, and actually useful, which is rare. I found a couple of tools there that I hadn’t come across before, and they’ve already helped me think more clearly about outreach and positioning. This is valuable for anyone trying to get their first real traction.
Yash Kedia
SDE 2, Disseqt AI · Feb 2026
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