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Autonomous Micro-Tools Suite

15 Live Tools

Pure client-side SPAs • Zero dependencies • Privacy-preserving

Autonomous Single-Page Micro-Applications Engine

Purpose-Built Tools for Finance, Dev & Everyday Operations

Zero sign-in, zero build steps, and zero server logging. Every tool runs 100% locally in your browser with reactive calculations, instant data exports, and offline persistence.

Total Tools: 15 Active
Finance: 7
DevTools: 4
Productivity: 2
Utilities: 2
Active Tool Personal Tax & Payroll

South African PAYE & UIF Net Salary Calculator

Computes statutory 2026/2027 progressive SARS tax brackets (18% - 45%), Section 11F retirement deductions, Section 6A medical tax credits, and statutory UIF contributions with reactive SVG charts.

Primary rebate R17,820 (entry threshold R99,000)
UIF 1% employee cap at R177.12 / month
Launch PAYE Calculator
Directory: /sars-paye-uif-salary-calculator/
Active Tool Corporate Tax & CIPC

SARS Small Business Corporation (SBC) vs PTY Ltd Tax Comparator

Side-by-side corporate tax model testing Section 12E SBC graduated tax brackets against standard flat 27% CIT, Section 12E accelerated depreciation, and CIPC filing fee schedules.

Calculates potential tax savings up to R89,052
Interactive 4-point Section 12E eligibility checklist
Launch SBC Comparator
Directory: /sa-sbc-vs-company-tax-calculator/
Active Tool Retirement & Wealth

Two-Pot Retirement Savings Pot Tax & Payout Estimator

Estimates pre-retirement Savings Component withdrawals under the Two-Pot system. Computes SARS marginal tax directive withholding, administrator fees, and long-term compounding loss over 30 years.

Dynamic marginal bracket tax directive estimation
10, 20 & 30-year compounding deficit wealth projections
Launch Two-Pot Estimator
Directory: /sa-two-pot-retirement-withdrawal-calculator/
Active Tool VAT & Statutory Tax

SARS VAT 15% Inclusive, Exclusive & Apportionment Tool

Bidirectional VAT calculator supporting 15% and historical 14% rates. Features Section 17(1) turnover apportionment formulas under BGR 16, Section 22 bad debt adjustments, and VAT201 return builder.

Instant 3-way converter (Exclusive, Tax Fraction, Inclusive)
Section 17(1) BGR 16 ratio with 95% de minimis alert
Launch VAT Calculator
Directory: /sa-vat-calculator-and-apportionment-tool/
Active Tool Crypto & CGT

Crypto Capital Gains Tax & Cost Basis Engine

Parses trade histories to calculate short and long-term capital gains and losses across FIFO, LIFO, HIFO, and Weighted Average methods with SARS, IRS, HMRC, and ATO statutory rules.

FIFO / LIFO / HIFO SARS R40k Exclusion IRS Form 8949 CSV Audit Schedule PDF
Launch Crypto Tax Engine
Directory: /crypto-capital-gains-tax-calculator/
Active Tool Payments & Fintech

South African Payment Gateway Fee Comparator

Compares transaction fees, settlement timelines, and net take-home margins across Payfast, Paystack, Yoco, Peach Payments, and Ozow Instant EFT factoring in 15% South African VAT.

Local vs international card & Instant EFT splits
Automated lowest fee provider recommendation
Launch Fee Comparator
Directory: /sa-payment-gateway-fee-comparator/
Active Tool Property & Conveyancing

SA Property Transfer Duty & Bond Cost Calculator

Calculates full property purchase closing costs in South Africa: statutory SARS transfer duty brackets (R1.1m exemption), LPC conveyancing attorney tariffs, and Deeds Office fees.

Zero SARS duty on properties under R1,100,000
Monthly bond repayment and total upfront cash required
Launch Bond Calculator
Directory: /sa-transfer-duty-and-bond-cost-calculator/
Active Tool DevTools

Cron Schedule Visualizer & Human-Readable Generator

Parses standard 5-part and 6-part cron expressions into plain English summaries, computes the subsequent 10 upcoming run timestamps across timezones, and provides an interactive visual time-grid selector.

Instant human-readable English breakdown
Export to Node.js, Python APScheduler, Go & K8s
Launch Cron Visualizer
Directory: /cron-expression-visualizer-generator/
Active Tool DevTools

SVG Path Visualizer, Cleaner & Code Minifier

Visual vector path optimizer. Strips editor bloat, rounds coordinate precision, simplifies shorthand Bezier curves, and exports to React/Vue JSX and CSS data URIs.

Interactive zoom/pan canvas & Bezier node inspector
Side-by-side byte savings & JSX component export
Launch SVG Optimizer
Directory: /svg-path-optimizer-and-visualizer/
Active Tool DevTools

Client-Side Regex Tester, Explainer & Generator

Evaluates regular expressions in real-time with layered DOM match overlays, capture group tables, ReDoS catastrophic backtracking alerts, and AST explanations.

18+ Presets (SA ID, Phone numbers, VAT & Email)
Code generation in JS, Python, PHP, Go, Rust
Launch Regex Tester
Directory: /regex-tester-and-cheat-sheet/
Active Tool
DevTools v1.0

JSON to TypeScript & Zod Schema Generator

Converts arbitrary JSON data into strongly-typed TypeScript interfaces, Zod validation schemas, standard JSON Schema (Draft-07), Python Pydantic models, Go structs, and Rust Serde types with automated type inference.

TypeScript & Zod JSON Schema Draft-07 Pydantic / Go / Rust Live Sandbox Validator
Launch Schema Generator
Directory: /json-schema-and-typescript-interface-generator/
Active Tool Productivity & Billing

Freelance Invoice & Payment Receipt Generator

Zero-login client-side invoice and receipt builder with live A4 vector canvas, customizable branding, line-item tax calculations, multi-currency formatting, and instant clean print/PDF export.

Split-screen editor with live A4 document canvas
LocalStorage auto-save & print-optimized PDF CSS
Launch Invoice Studio
Directory: /client-invoice-and-receipt-generator/
Active Tool Productivity

Markdown Table Editor, CSV Converter & Formatter

Visual spreadsheet grid supporting row/column addition, removal, alignment, sorting, and matrix transposition with bidirectional CSV, TSV, HTML, JSON, LaTeX, and ASCII conversions.

Bidirectional CSV / JSON / LaTeX conversions
90° matrix transposition & Excel clipboard copy
Launch Table Editor
Directory: /markdown-table-and-data-matrix-editor/
Active Tool Utility & Energy

Home Solar Inverter, Battery & Backup Sizing Calculator

Determines exact inverter capacity (kVA/kW) and lithium battery storage (kWh) needed for home and office appliances during power outages with inductive surge multipliers.

Dynamic appliance wattage checklist & surge math
Lithium DoD (80-90%) & backup duration modeling
Launch Solar Sizer
Directory: /solar-inverter-and-battery-backup-sizing-calculator/
Active Tool Utility & Energy

Tiered Electricity & Water Incline Block Tariff (IBT) Calculator

Models household electricity and municipal water utility bills against stepped incline block tariffs (IBT) and fixed service charges across City of Cape Town, Joburg, Tshwane, eThekwini, and Eskom.

Cape Town & Joburg Tshwane & eThekwini Eskom Homepower Printable Statement PDF
Launch Tariff Calculator
Directory: /municipal-water-and-electricity-tariff-calculator/

Architecture & Deployment Standards

Specifications followed across all micro-utilities in this repository

Zero NPM Dependencies Self-Contained SPA
100% Client-Side Math

All calculations run entirely in the browser using pure vanilla JavaScript. No sensitive salary, tax, or business profit figures are ever dispatched across the wire.

AdSense Auto Ads Enabled

Unified Auto Ads script tag configured with publisher ID ca-pub-9938389941694225 for clean, automated responsive placement across all subfolder index.html pages.

Mobile-First & Printable

Fully responsive down to entry-level Android viewports. Includes bespoke print stylesheet rules generating clean executive PDFs and formal compliance memos.