Um cofre de senhas e autenticador 2FA (TOTP) bilíngue PT/EN com criptografia local AES-256, desbloqueio rápido por impressão digital ou P...
A bilingual PT/EN password vault and 2FA (TOTP) authenticator with client-side AES-256 encryption, biometric or PIN quick unlock, Chromium extension and encrypted attachments.
Um estúdio PT/EN para remover fundos, ampliar imagens, preparar produtos e adesivos, retocar detalhes e exportar em lote, sem APIs de IA ...
A PT/EN image studio for background removal, upscaling, product layouts, stickers, selective retouching and batch export, without paid AI APIs.
A state-of-the-art vectorization suite featuring sub-pixel Rust/WASM tracing, AI super-resolution, intelligent background isolation, and industrial multi-format export.
How we reimagined the critical HTTP 500 Server Error as a classic 1979 vector Asteroids arcade game, featuring destructible '5 0 0' rock monoliths, Newtonian inertia physics, and live server health-check recovery tools.
How we transformed the HTTP 403 Forbidden error into a phosphor green Space Invaders arcade machine, featuring dynamic destructible '4 0 3' pixel bunkers, accelerating march tempo, and procedural 8-bit sound.
How we turned the frustrating HTTP 404 Not Found error into an engaging retro arcade experience, featuring a functional '4 0 4' labyrinth, corner buffering, procedural Web Audio, and mobile touch controls.
A comprehensive, privacy-first web suite engineered to merge, split, compress, sign, convert, and OCR documents with client-side execution and high-performance cloud engines.
A distraction-free, instant-launch web scratchpad and temporary clipboard built to hold links, code snippets, notes, and quick thoughts with continuous local persistence.
A robust, asynchronous web platform engineered to fetch, transcode, and deliver authorized videos and audio from YouTube, X (Twitter), and major web platforms into MP4 and MP3 with zero-retention security and strict legal governance.
Inspect and catalog deep folder hierarchies right from your browser using File System APIs, exporting structured tree diagrams, file lists, and CSV reports with zero cloud uploads.
A browser-based code optimization studio engineered to compress and beautify JavaScript, CSS, and HTML payloads with instant compression metrics and zero server uploads.
A nostalgic web homage to the 1972 arcade masterpiece and the iconic Brazilian Telejogo console, featuring CRT scanline shaders, synthesized 8-bit sound, and fluid HTML5 Canvas physics.
Test your focus and strategic thinking with an authentic digital edition of Peg Solitaire (Resta Um), challenging you to eliminate pegs until only one remains in the center.
A browser implementation of Checkers (Draughts) featuring mandatory capture logic, chain jumps, Flying Kings, and responsive local 2-player or AI match options.
A lightning-fast Link in Bio aggregator enabling creators and professionals to assemble all their social profiles, stores, and portfolios into a single responsive landing page.
An elegant, responsive word puzzle hub celebrating Brazilian crosswords and word searches, packed with daily challenges, streak tracking, smart hints, and dark mode.
Relive childhood memories with an interactive simulation of the classic AquaPlay water toy, featuring realistic bubble propulsion, floating ring buoyancy, and relaxing arcade mechanics.
A privacy-centric web platform providing on-demand virtual numbers for instant SMS activation codes, shielding personal phone numbers from tracking, leaks, and spam.
Master the ultimate game of strategy in your browser, featuring full FIDE movement compliance, en passant, castling, pawn promotion, and AI opponents for tactical skill building.
Relive the magic of the iconic Italian plumber in a high-speed browser-native platformer featuring authentic jump physics, question blocks, coins, and enemies running at 60 FPS.
High-performance multi-tenant appointment scheduling engine tailored for barbershops: automatic WhatsApp reminders, bi-directional Google Calendar sync, package management, cash flow tracking, and installable PWA.
A tribute to Alexey Pajitnov's 1984 masterpiece, featuring authentic tetromino matrices, line clear animations, progressive gravity drop speed, and retro synthesized audio.
A sleek browser incarnation of Tic-Tac-Toe featuring local two-player mode and an unbeatable AI powered by the game-theoretic Minimax decision algorithm.
An authentic, tactile recreation of the iconic 1978 electronic memory game: analog square-wave synthesis, mobile haptic vibration, 3 game modes, and 100dvh responsiveness.
An authentic, high-performance web recreation of the 1978 Taito classic: procedural destructible bunkers, escalating alien march tempo, mystery UFO bonuses, and mobile-first 100dvh viewport.
A browser recreation of the world's favorite card game, featuring official rules, action cards (+2, +4, skip, reverse, wild), smooth card animations, and tactical computer opponents.
Transform ordinary text into hundreds of iconic retro ASCII art fonts and FIGlet banners designed for README files, code headers, and terminal welcome prompts.
Discover ECALC PRO: the open-access civil engineering cloud suite integrating 35+ specialized sizing apps, direct DXF CADClone vector bridges, OfficeClone live spreadsheets, and ABNT-compliant calculation reports.
Next-gen offline-first personal and corporate financial manager: smart installment engine, OFX bank statement parser, 50/30/20 budget gauge, and instant PDF reporting.
Modernize jobsite health and safety (SST): generate Risk Management Programs (PGR), Job Hazard Analyses (APR), Work Permits (PT), and EPI receipts under NR-01, NR-18, and NR-35.
Access an indexed compendium of Brazilian ABNT civil engineering standards: search codes, scopes, mandatory parameters, and design guidelines for structures, MEP, and safety.
Convert structural engineering and physical units with zero floating-point error: stress and pressure (MPa, psi, bar, kgf/cm²), bending moments, hydraulic flow, and density.
Calculate detailed material consumption per square meter: estimate cement, sand, gravel, mortar, bricks, tiles, paint, and tie wire based on SINAPI/TCPO compositions.
Compare 5 major structural building technologies: evaluate execution speed, self-weight, waste generation, thermal-acoustic insulation, and cost per m².
Plan construction jobsites and worker welfare facilities: size sanitary blocks, mess halls, locker rooms, and container layouts compliant with Regulatory Standard NR-18.
Standardize site quality audits: use ready-to-run Service Verification Sheets (FVS) for structural concrete, masonry, plumbing, electrical, and waterproofing under PBQP-H/ISO 9001.
Manage digital jobsite daily logs (RDO): log daily weather conditions, subcontractor workforces, equipment hours, inspections, and export audit-ready PDF reports under CONFEA Res. 1024.
A versatile vector QR Code generator supporting custom brand palettes, logo embedding, Wi-Fi auto-connect profiles, vCards, and high-res PNG/SVG exports.
Solve topographic land surveys: compute closed traverse bearings, coordinates, angular and linear closure errors, Bowditch adjustment, and differential leveling runs.
Size building fire protection systems: calculate hydrant/hose reel hydraulics, minimum residual pressures, fire pump head and flow, and extinguisher coverage under NBR 13714/12693.
Design interior combustible gas distribution lines: calculate appliance consumption, simultaneity factors, pipe diameters via Pole and Renouard equations under NBR 15526/15358.
Assess architectural acoustics: compute weighted sound reduction index (Rw), apparent airborne sound transmission, and impact sound levels on floor slabs (L'nTw) under NBR 15575.
Evaluate envelope thermal comfort: calculate wall and roof thermal transmittance (U-value), thermal capacity (CT), and verify compliance with Brazilian Bioclimatic Zones under NBR 15220/15575.
Estimate surface finishing materials: calculate ceramic and porcelain tiles, thin-set mortar, grout, scratch coat, wall render, skim coat, and multiple coats of architectural paint.
Select and size structural waterproofing systems: choose flexible vs. rigid membranes, quantify bituminous sheets, primers, polymer mortars, and water tightness tests under NBR 9575.
Extract and download official YouTube cover thumbnails across all available resolutions (maxresdefault, HQ, SD) in a single click just by pasting the video URL.
Size on-site wastewater disposal systems: calculate septic tank volumes with mandatory 1000L base, upflow anaerobic filters, and absorption sumidouros under NBR 7229/13969.
Size cold and hot water piping networks: compute flow velocities, continuous friction loss via Hazen-Williams, equivalent length minor fittings, and dynamic pressures under NBR 5626.
Size building water storage tanks and cisterna: compute daily domestic water demand, fire protection reserves (RTI), and lift pump horsepower under NBR 5626.
Calculate thermal cooling loads for HVAC and split systems: evaluate envelope conduction, solar window radiation, occupant heat gain, and select capacities in BTU/h and TR.
Size grid-tied solar photovoltaic generators: compute solar peak sun hours (PSH/HSP), array peak power (kWp), panel quantities, and financial payback periods.
Design interior lighting systems with the Lumen Method: calculate target lux illuminance, room cavity ratios, total required lumens, and Lighting Power Density (LPD/DPIL).
Size electrical branch circuits and distribution boards: calculate ampacity, thermal and grouping derating, voltage drop limits, and breaker coordination under NBR 5410.
Estimate global construction costs using official CUB/SINDUSCON parametric indices: configure residential and commercial project typologies under NBR 12721.
Perform civil earthwork volume calculations: compute cut and fill balance, soil bulking and compaction shrinkage factors, and dump truck hauling logistics.
Size roof framing and pitches: calculate water slope angles, hip/ridge lengths, timber purlins/rafters, and exact tile quantities with breakage allowances.
Design ergonomic, code-compliant staircases: compute risers and treads via Blondel's Law (2E + P = 63-64cm), landing thresholds, and throat slab depths under NBR 9050.
A sovereign link shortening solution offering custom URL aliases, high-speed HTTP redirects, QR code generation, and granular click telemetry without third-party tracking.
Accurately calculate masonry blocks and laying mortar: deduct window/door openings using TCPO standards and compute structural grout takeoffs under NBR 15270/16868.
Detail rebar schedules and structural steel: calculate nominal linear weights, bar substitutions, anchorage lengths, and cutting waste matrices according to NBR 7480.
Compute laboratory and jobsite concrete mix proportions: determine water-cement ratio via Abrams Law, aggregate corrections, moisture compensation, and batch yields under NBR 12655.
Size gravity and cantilever reinforced concrete retaining walls: calculate active earth pressures (Rankine/Coulomb), overturning, sliding safety factors, and stem rebar.
Design shallow foundations and reinforced concrete footings: calculate allowable soil bearing capacity, footing plan dimensions, rigid criteria, and bending reinforcement under NBR 6122.
Size solid and pre-stressed joist slabs: compute design distributed loads, Marcus bending moment tables, minimum slab thickness, and crack deflection criteria under NBR 6118.
Calculate reinforced concrete columns subjected to axial compression and bending moments: compute slenderness ratios, 2nd order local effects, and rebar ratios according to NBR 6118:2023.
A batch media workstation engineered to resize, reformat, watermark, and sequentially rename dozens of images simultaneously using high-speed client-side canvas routines.
Pre-dimension reinforced concrete beams directly in your browser: calculate bending moments, shear forces, longitudinal rebar, and immediate vs. creep deflections according to NBR 6118:2023.
Explore the new ECALC PRO 2.0: 41 audited engineering web apps featuring shared project states, DXF vector export to CADClone, live calculation sheets in OfficeClone, and full compliance with Brazilian ABNT/NR standards.
A forensic-grade image metadata analyzer revealing hidden EXIF tags, camera hardware details, shutter parameters, and embedded GPS coordinates on an interactive satellite map.
A lightweight financial integration tool designed to connect web applications directly to the Mercado Pago API, generating instant dynamic Pix QR Codes with real-time webhook confirmation.
Convert audios, batch optimize images, merge and split PDFs, extract audio from videos, and manage ZIPs entirely in your browser with absolute zero cloud uploads.
A vibrant arcade tribute to Hangman: 1,500+ Portuguese words in 21 categories, smart accent recognition, 60s Blitz, 2-player pass & play, synthesized Web Audio, and offline PWA.
A blazingly fast, privacy-first linguistic engine for writers, poets, and puzzle lovers: 267k Portuguese words, offline PWA, Scrabble scoring, and smart filters.
The next-generation universal converter: 19 technical categories, live exchange rates, voice-activated NLP, offline PWA, and Chrome Extension MV3.
A zero-latency browser utility to encode images, SVGs, and files into Base64 strings and Data URIs with instant CSS background and HTML tag copy shortcuts.
Experience the adrenaline of authentic Brazilian Truco directly in your browser, featuring Paulista and Mineiro rules, card animations, dynamic bluffing AI, and voice callouts.
Step back into 1989 with a lightweight, browser-based Game Boy emulator featuring authentic 4-shade phosphor palettes, stereo sound synthesis, and touch D-Pad controls.
A must-have developer utility to synthesize realistic, mathematically valid Brazilian mock data (CPF, CNPJ, credit card tokens, names, and addresses) for software testing and QA.
A high-performance blogging engine and modern CMS equipped with AI content generation, rich markdown authoring, automated sitemaps, and built-in search engine optimization.
Turn any smartphone or tablet into a professional surveying camera: real-time GPS telemetry, UTM projection, CAD dimensioning, and client-side PDF dossier generation.
A productivity workspace acting as your digital second brain, combining markdown note capture with automated AI summarization, semantic tagging, and instant knowledge retrieval.
A statistical utility for lottery enthusiasts featuring combinatorial wheels, frequency analysis, delayed number tracking, and automated ticket validation for major draws.
A complete, private office workstation right in your browser: Word, Excel, PowerPoint, Project Gantt charts, and PDF manipulation running 100% client-side.
A peer-to-peer web transfer tool enabling instantaneous, encrypted file and text sharing between PC, Mac, Android, and iOS devices on the same network with zero file size limits.
A lightning-fast digital menu and order management SaaS engineered for pizzerias, supporting split pizza toppings, custom crust selections, and WhatsApp integration.
Test and generate pixel-perfect web favicons across simulated browser environments, including Chrome Dark/Light, Google Search SERP, and mobile home screens with multi-size ICO export.
A browser-based project scheduling environment engineered with interactive Gantt diagrams, critical path analysis, task dependencies, and milestone tracking.
An interactive spreadsheet studio built right into the browser, supporting essential mathematical formulas, data sorting, cell formatting, and seamless CSV/Excel exports.
The major evolution of our open-source scanner PWA: native fingerprint unlock via WebAuthn, 47-digit bank slip decoding, and ESC/POS thermal printing.
A clean, responsive word processing environment featuring full typography tools, tables, image insertion, and seamless PDF/DOCX exporting with zero installation required.
A comprehensive fitness management suite designed for gym owners and personal trainers to organize workout sheets, student memberships, recurring payments, and retention analytics.
A secure client-side password vault storing your sensitive credentials locally inside an encrypted vault file with zero telemetry and complete privacy against data breaches.
How WebAssembly, WebGPU, Client-Side AI, and Zero-Knowledge architectures turned the browser into the most powerful distributed OS.
Building a high-precision 2D CAD workstation running 100% in the web browser, compliant with ABNT standards and featuring 170+ engineering blocks.
An official Google Chrome Manifest V3 extension tailored for instant screen grabbing, cropping, blurring confidential data, and annotating visuals with high-speed clipboard sharing.
Discover the engineering behind bringing CorelDRAW workflows to the browser, with real-time Bézier polynomial curves and client-side PowerTRACE.
A modern clinical management suite engineered for dental practices, featuring interactive tooth odontograms, digital patient records, multi-chair scheduling, and financial analytics.
A edição profissional de fotos no computador sempre foi sinônimo de instaladores pesados, máquinas com refrigeração dedicada e assinatura...
A complete Photoshop-style editor in the browser: WebGL 2.0 layer shaders, AI background removal, photo colorizer, and PSD file support.
Na marcenaria moderna, na vidraçaria e na serralheria, o custo da matéria-prima representa mais de 60% do valor final do produto. Uma cha...
Optimizing 2D sheet cutting stock with kerf compensation, OCR AI sketch reading, and automated A4 workshop work orders.
A tribute to the groundbreaking 1977 home console, featuring cycle-accurate emulation, authentic TIA audio synthesis, CRT scanline filters, and native gamepad support.
An instant, privacy-first PDF reader built for speed, allowing users to inspect documents, extract text, and navigate pages without heavy desktop installations.
Vazamentos massivos de senhas em plataformas como LastPass reacenderam um debate urgente na comunidade de cibersegurança: por que confiar...
PBKDF2 with 100,000 iterations, Web Cryptography API, Chrome MV3 extension, and Panic PIN protection.
A versatile developer utility for multi-line search, regex matching, case-preserving replacements, and instant syntax diffing directly in the browser.
A popularização de ferramentas de Inteligência Artificial generativa trouxe consigo um novo ecossistema de rastreamento digital invisível...
Binary header disassembly, stripping AI invisible watermarks, and restoring total visual privacy.
Transform written content, articles, and scripts into natural, expressive human-like spoken audio using advanced neural Text-to-Speech models directly from your browser.
A powerhouse image optimization studio running 100% inside your browser using HTML5 Canvas and WebAssembly to drastically reduce file sizes without sacrificing visual fidelity.
Plataformas tradicionais de assinatura eletrônica de contratos impõem modelos comerciais predatórios: cobram por cada documento enviado, ...
Fluid Bézier signature capture, direct PDF stream injection, and SHA-256 integrity validation without accounts or fees.
A zero-knowledge client-side cryptocurrency wallet engineered with AES-256-GCM encryption, PBKDF2 derivation, and multiple RPC node fallbacks to keep your digital assets private and secure.
Engenheiros civis, calculistas estruturais e técnicos de obra precisam frequentemente validar dimensionamentos rápidos no canteiro sem ac...
Reinforced concrete beams, column slenderness, hydraulics, and matrix linear algebra in the browser.
A modern web application built to manage preventive maintenance, fuel consumption, insurance, and operating costs for corporate fleets and personal vehicles with zero friction.
Aplicativos de scanner para smartphones geralmente vêm acompanhados de assinaturas agressivas, anúncios invasivos e marcas d’água irritan...
Document scanning via webcam or smartphone with adaptive thresholding, perspective rectification, and multipage PDF export.
Em uma era de vigilância em massa e retenção invasiva de metadados, a privacidade em comunicações ponto a ponto não é um privilégio — é u...
Elliptic curve Diffie-Hellman key exchange, volatile RAM storage, and emergency panic PIN.
Perder o celular e ficar trancado fora de todas as suas contas online é um dos maiores pesadelos digitais modernos. Aplicativos tradicion...
RFC 6238 time-based one-time password generator with client-side AES-GCM 256 master password encryption.
A transparência pública é essencial para a democracia, mas os portais oficiais de dados abertos costumam ser lentos, confusos e repletos ...
Public transparency meets fintech UI: fast columnar filtering of over two decades of government spending.
Fotógrafos, e-commerces e criadores de conteúdo que precisam aplicar logotipos e direitos autorais em dezenas de imagens por dia frequent...
Watermark hundreds of photos simultaneously using multithreaded Web Workers and OffscreenCanvas.
Programar a partir de qualquer computador, tablet ou Chromebook sem precisar configurar ambiente local, instalar extensões pesadas ou com...
Full Monaco-based code editor with syntax highlighting, IntelliSense, Prettier, and AI assistant in the browser.
Sorteios em redes sociais e eventos corporativos sofrem de uma desconfiança crônica: como os participantes podem ter certeza de que o res...
Random giveaways with real cryptographic entropy, Canvas wheel animations, and immutable verification certificates.
A medição de níveis de pressão sonora para conformidade com normas técnicas de conforto acústico (ABNT NBR 10151) e segurança do trabalho...
Accurate acoustic measurement using the Web Audio API, A/C weighting curves, and FFT frequency filters.
Quem usou computadores com Windows 95, 98, 2000 ou XP certamente guarda na memória as horas jogando o lendário 3D Pinball Space Cadet. Cr...
Decompiled C++ source compiled to WASM via Emscripten with native physics and synthesized Web Audio.
Resolver um Cubo Mágico 3x3x3 (Cubo de Rubik) é um dos maiores quebra-cabeças lógicos da humanidade, mas o processo de aprender dezenas d...
Computer vision color classification and Kociemba Two-Phase algorithm to solve any cube in under 20 moves.
A migração obrigatória do ecossistema de extensões do Google Chrome para o Manifest V3 (MV3) quebrou centenas de utilitários populares de...
Chrome MV3 extension architecture with automated viewport stitching, vector annotations, and zero bloat.
Consumir e arquivar conteúdo audiovisual em um mundo de conexões instáveis exige ferramentas que combinem agilidade no download e intelig...
Fast YouTube video/audio download paired with an AI Chrome extension that summarizes hours of video into minutes.
Lavanderias comerciais, lavanderias self-service e tinturarias operam em um ritmo acelerado de balcão: peças de roupas recebidas por quil...
Point of sale (POS) and operations management with direct Web Serial and Web USB thermal receipt printing.
A dependência de pacotes de escritório proprietários para tarefas simples como mesclar dois arquivos PDF, extrair páginas ou editar um te...
Free, private in-browser document manipulation: merge, compress, extract, and convert PDFs without server uploads.