· briskly.tools · a small tools studio · one person shop
Every tool
you'd build
yourself, already built.
Free web tools that do one thing well. No signup, no watermark, no “connect your Google account.” Made for busy people who need the thing, now, and nothing else.
quick: invoice rate calc email signature
The tools so far.
· 17 live · more shipping
- · financefree
Invoice generator.
PDF invoices in 30 seconds. 10 currencies, 3 templates, Word-compatible export. Saved to your browser, never uploaded.
· browser-only→ - · financefree
Freelance rate calc.
Work backwards from a target salary to hour/day/project rates. Tax, benefits, billable hours, and the 12 weeks a year you won't actually bill.
· browser-only→ - · financefree
Customer lifetime value.
CLV / LTV:CAC for SaaS and subscription products. ARPA, churn, gross margin, CAC in; three CLV variants, LTV:CAC ratio, CAC payback, and benchmark health checks out.
· browser-only→ - · financefree
CAC calculator.
Customer acquisition cost calculator with per-channel breakdown, paid vs blended attribution, LTV:CAC ratio, payback period, and channel-concentration warnings. The sibling tool to CLV.
· browser-only→ - · financefree
Cash runway.
Months of runway, zero-cash date, and a scenario explorer that projects 5 years out: cut expenses X%, grow revenue Y%, see if you reach default-alive. For SaaS startups.
· browser-only→ - · productivityfree
Email signature maker.
Six templates, five fonts, auto-pulled logo, Gravatar photo. Paste-ready HTML for Gmail, Outlook, and Apple Mail.
· browser-only→ - · legalfree
NDA generator.
Mutual or one-way non-disclosure agreement. Editable parties and terms, optional non-solicit, governing-law field. Prints to PDF, data stays local.
· browser-only→ - · legalfree
Rental agreement.
Residential lease, fixed-term or month-to-month. Rent, deposit, utilities split, pet and smoking rules, governing law. Prints to PDF.
· browser-only→ - · legalfree
Freelance contract.
Services agreement for solo freelancers. Hourly / fixed / milestone fees, IP ownership toggle, IC status clauses. US or Canada jurisdiction. Prints to PDF.
· browser-only→ - · legalfree
Consulting contract.
Advisory variant: license-back IP by default (keep your methodology), retainer / hourly / fixed, 30-day notice. For solo consultants and advisors.
· browser-only→ - · ai toolsfree
LLM token counter.
Count tokens across GPT-5.5, GPT-5.4, Claude 4.x, Gemini 3.x, Llama 4. Per-model cost + context fill. Exact for OpenAI; approximate for the rest. In-browser, no API key.
· browser-only→ - · ai toolsfree
AI model picker.
Five questions, one recommendation plus two alternatives. Pick the right Claude / ChatGPT / Gemini / Llama model for your use case, budget, and context size.
· browser-only→ - · ai toolsfree
AI cost calculator.
Project monthly API cost across 11 LLMs. Set request volume, prompt size, output length, cache hit rate. Cheapest model and cheapest flagship highlighted. Six workload presets.
· browser-only→ - · ai toolsfree
AI tell killer.
Stop ChatGPT, Claude, and Gemini from sounding like AI. 21 tells across word choice, structure, formatting, and behavior. Generates a paste-in prompt, a Claude Code rules block, and a Node.js lint script.
· browser-only→ - · ai toolsfree
AI output linter.
Paste any AI-generated text. See em dashes, the word 'comprehensive', the AI vocabulary cluster, and other detectable tells highlighted with line numbers. Real-time, in-browser, no signup.
· browser-only→ - · ai toolsfree
AI slop detector.
Paste any URL. Get a 0-100 AI-slop score based on the visual template patterns AI site builders ship by default. Inter font, purple-blue gradients, shadcn cards, all flagged with fixes.
· browser-only→ - · ai toolsfree
Block AI crawlers.
robots.txt generator that blocks GPTBot, ClaudeBot, Google-Extended, PerplexityBot, Bytespider, CCBot, and 16 more. Three presets plus per-bot toggles. Copy or download the file directly.
· browser-only→ - · dev toolsfree
Email deliverability.
Paste any domain, get SPF + DMARC + DKIM + MX analysed in one lookup. Pass/warn/fail per record with remediation. Runs in your browser via DNS-over-HTTPS, no signup.
· browser-only→ - · dev toolsfree
UUID generator.
v4, v7, v1, or nil. Bulk up to 1,000. Four format options, one-click copy. Cryptographically secure via the Web Crypto API. Nothing uploads.
· browser-only→ - · dev toolsfree
Regex tester.
Live match highlighting, capture groups, replace mode, and flag toggles. ECMAScript flavor. Ships with dedicated regex cheat sheet and Python cheat sheet sub-pages.
· browser-only→ - · dev toolsfree
Base64 encoder.
Text ↔ base64 with UTF-8 handled correctly. Standard and URL-safe variants, file upload, live image preview for decoded PNG/JPG/GIF. No signup.
· browser-only→ - · dev toolsfree
Timestamp converter.
Unix / epoch timestamp ↔ human-readable date. Live clock, 16 timezones, seconds or milliseconds, ISO 8601 + RFC 2822 + relative output.
· browser-only→ - · dev toolsfree
JSON to CSV.
Bidirectional JSON ↔ CSV with nested-object flattening, custom delimiters, Excel-compatible output. Sub-pages for JSON-to-Excel and CSV-to-JSON workflows.
· browser-only→ - · dev toolsfree
Barcode generator.
QR codes plus Code 128, EAN-13, UPC, ITF-14, Code 39, MSI, Codabar, Pharmacode. Custom colors, sizes, error correction. Download PNG or SVG. No signup.
· browser-only→
02 · why
A well-used notebook,
not a dashboard.
Most online tools are products pretending to be tools. Free tiers designed to funnel you into a signup. Watermarks that exist so you'll pay to remove them. Ads the size of the tool itself.
Briskly doesn't do any of that. Every tool works fully, for free, without an account. You get what you came for, you leave, your data doesn't follow you.
Made by one person who actually uses these tools. If something's broken, email me.
· tools first
Browse by area.
· 4 hubs
- · hub
AI
Token counters, model comparisons, prompt-caching, MCP, and the long-form guides on what's actually different about each AI lab in 2026.
browse → - · hub
Dev tools
JSON ↔ CSV, regex tester with cheat sheets, UUID generator, base64, timestamp converter, barcode generator. Browser-only, no signup.
browse → - · hub
Freelance
Invoice generator, rate calculator, contracts, NDAs. Plus the writing on how to set rates, draft contracts, and invoice clients without the LegalZoom tax.
browse → - · hub
Reviews
Honest comparisons of B2B SaaS in verticals where the wrong pick costs real money: EMR for small practices, ERP for small business, MSP, SEO for law firms.
browse →
Also: AI tool reviews.
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Best MSP for small business 2026: 8 providers tested with real per-user pricing, fit by industry (healthcare, legal, finance, ecommerce). Decision framework.
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Best ERP for Small Business 2026 (8 Tested, Real Pricing)
Best ERP for small business 2026: 8 systems tested with per-user pricing, fit by industry (manufacturing, retail, distribution, services). Decision framework.
· Healthcare Software
Best EMR for Small Practice 2026 (8 Tested, Real Pricing)
Best EMR for small practice 2026: 8 systems tested with real per-provider pricing, fit by practice type (primary, family, cash-based, solo). Decision framework.