Developer Ecosystem • Tools & Apps

Crafted Utilities for Modern Developers

Lightweight, privacy-focused utilities designed to solve everyday frontend and engineering challenges with speed and precision.

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Chrome Extension • Free

Gridy

Precision Web Dev Alignment Guides & Edge Rulers

Lightweight Chrome extension overlaying interactive canvas edge rulers and draggable alignment guides on web apps. Features magnetic DOM snapping and per-domain local persistence.

Continuous Edge Rulers (10/50/100px)
Smart Magnet DOM Snapping
Per-Domain Storage Persistence
Zero CSS Leaks (Shadow DOM)
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Web App • 100% Client-Side

JWT Debugger & Inspector

Bi-directional JWT Encoder, Decoder & Signature Verifier

Inspect, decode, and generate JSON Web Tokens in real time. Features human-readable timestamp countdowns and HMAC signature verification natively via the Web Crypto API.

Bi-Directional Real-Time Encoding
HMAC HS256/384/512 Verification
Human Expiration (exp/iat) Countdown
100% Private (Zero Network Calls)
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Web App • Multi-Engine

Diagrammer

Interactive Live Diagram Editor & Exporter (Mermaid & PlantUML)

Visualize software architecture, workflows, and database models from plain text. Features real-time rendering for Mermaid, PlantUML, and Graphviz with pan & zoom, hi-res SVG/PNG export, and shareable URLs.

100% Client-Side Mermaid Rendering
PlantUML, Graphviz & D2 Support
Smooth Canvas Pan & Zoom
Vector SVG & Hi-Res PNG Export
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Web App • Dual-Pane

JSON Editor & Tree/Table Viewer

Dual-Pane CodeMirror 6, Interactive Tree & Table JSON Editor

Format, validate, repair, query, and transform JSON side-by-side. Features interactive tree nodes, tabular grids, full CodeMirror 6 editing, and instant diff comparisons.

CodeMirror 6 Text Mode
Interactive Tree Hierarchy
Spreadsheet-Style Table View
Side-by-Side Dual Pane Transfer
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Web App • 100% Client-Side

hanDraw

Virtual Hand-Drawn Whiteboard & Sketch Tool (Rough.js)

Organic whiteboard sketch tool inspired by Excalidraw. Draw wireframes, software architecture, and concept mind maps with hand-drawn Rough.js geometry, auto-save persistence, and hi-res export.

Organic Rough.js Hand-Drawn Engine
Shapes, Freehand Pencil, Text & Arrows
Smooth Infinite Pan & Zoom Canvas
100% Client-Side & Local Auto-Save
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More Developer Tools in the Pipeline

We believe developer tools should be instantaneous, zero-install, and privacy-respecting. Stay tuned for upcoming CSS Layout Visualizers and API mocking tools.

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