Our Products
60 professional-grade products — from tax calculators trusted for accuracy to production-ready APIs and open-source packages.
Complete Tools Ecosystem
mtdevworks is a unified platform designed for Indian professionals and developers. All products follow consistent design principles, high accuracy standards, and transparent methodology. Whether you need quick calculations, API-driven automation, or operational tooling, you'll find everything in one place.
Finance & Tax Tools
Comprehensive calculators for GST, income tax, HRA, EPF, and investment planning. Each tool is built with official Indian tax rules and published circulars as reference. No hidden assumptions — full transparency on methodology and edge cases.
Developer Utilities
REST APIs, CLI tools, and browser extensions for common workflows: JSON validation, address parsing, format conversion, and data cleaning. Built for production use with clear documentation, rate limiting, and error handling.
API Services
Programmatic access to core functionality. Shared API key infrastructure, usage dashboard, and consistent authentication. Perfect for integrating into your applications or automation workflows.
How to Use This Directory
Browse all products below by category, or use the search to find what you need. Each product includes a detailed description, user guide, and links to relevant official sources. All tools are free to use — no sign-up required. For programmatic access, explore our API documentation and request an API key.
Browse all products by category
SaaS Products(1)
Live SaaS products with paid tiers, dashboards & API access
Finance Tools(31)
SEO-optimized calculators for Indian tax & investment planning
Finance ToolGST Tools Cluster
Combined workflow page for GST calculators and related compliance tools.
Finance ToolSalary Tools Cluster
Combined workflow page for salary planning, HRA, and optimization tools.
Finance ToolInvestment Tools Cluster
Combined workflow page for SIP, PPF, FD/RD, and investment planning tools.
Finance ToolGST Late Fee Calculator
Calculate GST late fees & interest instantly for GSTR-3B, GSTR-1, GSTR-4, GSTR-9.
Finance ToolHRA Exemption Calculator
Calculate HRA tax exemption under Section 10(13A) of the Income Tax Act.
Finance ToolSIP Return + Tax Calculator
Calculate SIP returns with CAGR, inflation adjustment, and LTCG tax impact.
Open Source Packages(1)
Zero-dependency NPM & pip packages
Developer Tools(24)
Production-ready developer utilities and IDE extensions
Dev ToolCursor Prompt Formatter
VS Code extension to format, structure, and optimize prompts for AI coding assistants.
Dev ToolJSON Formatter & Validator
Format, minify, sort keys, and validate JSON with real-time stats.
Dev ToolBase64 Encoder/Decoder
Encode & decode Base64 with URL-safe mode and file-to-Base64 conversion.
Dev ToolHash Generator
Generate MD5, SHA-1, SHA-256, SHA-512 hashes with comparison tool.
Dev ToolPassword Generator
Cryptographically secure password generator with entropy scoring and bulk mode.
Dev ToolAI Prompt Templates
Ready-to-use prompt templates for ChatGPT, Claude, and other LLMs.
Micro APIs(2)
Lightweight REST APIs with free tiers
Indian Validation Tools(5)
PAN, GSTIN, IFSC, PIN, Aadhaar masking, and Indian calendar utilities
Validation ToolsAadhaar Number Masker
Mask your 12-digit Aadhaar number for safe sharing per UIDAI guidelines.
Validation ToolsIFSC Code Lookup
Validate IFSC codes and identify bank name, branch, address, and MICR code.
Validation ToolsIndian Holiday Calendar
Complete Indian holiday and festival calendar for 2025-2026.
Validation ToolsIndian PIN Code Lookup
Find post office details, district, state, and delivery status for any PIN code.
Validation ToolsPAN Card Validator
Verify the format and structure of Indian Permanent Account Numbers.
General Utilities(4)
Productivity tools and everyday utilities
UtilityLorem Ipsum Generator
Generate paragraphs, sentences, or words of placeholder text for designs.
UtilityPomodoro Timer
25-minute focus sessions with short and long breaks to boost productivity.
UtilityQR Code Generator
Create QR codes for URLs, text, WiFi, vCard, email and download as PNG or SVG.
UtilityWord Counter
Count words, characters, sentences, paragraphs and estimate reading time.