SaaS Apps Built Under fabox.org
A collection of purpose-built applications serving businesses and users across Europe and beyond.
Explore AppsBuilding at fabox.org
Every app under fabox.org is built with a focus on clean design, reliable performance, and real-world utility. From health tracking to invoicing — each project solves a specific problem for a specific audience.
Gross to net salary calculator
A free online tool to easily calculate your net take-home pay from your gross salary after taxes and social contributions.
Salary calculator
A free online tool to easily calculate your net take-home pay from your gross salary after taxes, insurance, and deductions.
JSON Formatter
A free online tool to validate, format, and beautify your JSON data, making it perfectly structured and easy to parse.
Base64 converter
A free online tool to quickly encode text or files into Base64 format, or decode Base64 strings back into their original format.
QR-Code generator
A free online tool to quickly create custom QR codes for URLs, text, Wi-Fi networks, or contact details.
Text to speech
A free online tool to instantly convert written text into natural-sounding spoken audio and download it as an MP3 file.
Cute TTS
A free online tool to generate text-to-speech audio and videos of a cute character face with realistic lip-syncing.
Loan calculator
A free online tool to easily calculate your monthly loan payments, interest rates, and total repayment schedule.
SVG to PNG
A free online tool to easily convert SVG vector graphics into high-quality PNG images with transparent backgrounds.
Docker learn
Master Docker and containerization with hands-on tutorials. Learn to build, ship, and scale applications efficiently from scratch.
Image compressor
Compress your images instantly without losing quality. Optimize JPEG, PNG, and WebP files to boost your website speed and save storage.
Office to PDF
archivedEasily convert Word documents, Excel spreadsheets, and PowerPoint presentations into high-quality PDF files. Fast, secure, and preserves your original formatting.
JWT: Json Web Token
An online JSON Web Token playground. Decode, verify, and generate JWT tokens instantly. Perfect for debugging headers, payloads, and signatures.
Pixel Crypt
Hide encrypted secret messages inside your photos using secure steganography. Share confidential notes, passwords, or private text completely hidden in plain sight. Only someone with the correct key can decrypt and reveal the hidden message.
SSH Keygen
A simple tool to generate SSH key pairs for secure authentication.
Gear simulator
An interactive workbench for mechanical systems. Simulate gear trains in real time to explore speed, torque, and direction through animated lessons and a freeform sandbox mode.
Background Remover
A free online tool to automatically remove image backgrounds instantly, leaving you with a clean, transparent background.
Tamagotchi TTS
A free online tool to generate text-to-speech audio and videos of a Tamagotchi with realistic lip-syncing.
Youtube Downloader
archivedA free online tool to easily download YouTube videos and convert them into high-quality MP4 or MP3 formats instantly.
Tickets generator
A free online tool to easily design and generate custom tickets for events, raffles, concerts, or parties.
Planetary Gear
Calculate, design, and visualize planetary (epicyclic) gear systems. Analyze gear ratios, rotation speeds, torque, tooth configurations, and mechanical efficiency in real-time.
Torque
Gearbox designer. Pick any motor and Torque designs a fully parametric cycloidal drive (/designer), compound gear train (/gear-train), planetary gearbox (/planetary) or worm gearbox (/worm) for it. It checks that the gearbox is strong enough, then exports print-ready STL, STEP and a Fusion 360 script.
Impeller Academy
Impeller Academy — a free, interactive course that takes a complete beginner to expert level on impellers: how they work, every type, where they're used, and how to design and build one.Every lesson follows the same rhythm: everyday comparison → animation → try it yourself → key idea → 3-question quiz. Progress and XP live in the browser (no account)
Propeller & impeller generator
Design custom propellers, pump impellers and fan wheels. Shape them with sliders and curves, preview them live in 3D, check performance and printability, and export print-ready STL or Fusion 360-ready STEP.
Model Forge
Build your own AI. No code. Connect blocks, drop in your data and train a real model on your own device. Then test it, use it and share it.
XML formatter
A free online tool to clean, format, and beautify your XML code, making it structured and easy to read.
PDF Signer
A free online tool to easily add secure electronic signatures and initials to your PDF documents without installing any software.