SQL Sandbox
Design database schemas, seed tables, and run SQL queries in the browser. Practice SELECT, JOIN, and DML with a personal schema builder.
Open SQL sandboxPlatform courses
Structured courses built by the platform team. Open a domain and choose a learning path that fits your level.
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Courses from authors
Courses shared by independent authors on SkillUpWithMe. Follow creators you trust and explore their catalogs.
My content
Your own courses and materials. Create a domain with lessons, or publish articles, guides, and other content. Use your favorite LLM — ChatGPT, Claude, Gemini, or DeepSeek — for fast, convenient content creation.
IT Section
CIDR Calculator
Calculate IPv4 subnet mask, network and broadcast addresses, and usable host range from CIDR notation.
Open CIDR calculatorCron Helper
Parse Unix cron expressions, understand each field, and preview the next scheduled run times.
Open cron helperGit Lab Simulator
Practice Git branching, commits, merges, and conflict resolution in a safe browser simulator.
Open Git Lab simulatorHash Generator
Compute MD5, SHA-256, SHA-512 and HMAC digests from text or files entirely in your browser.
Open hash generatorRegex Checker
Test JavaScript regular expressions with live matches, capture groups, highlight, and replace preview.
Open regex checkerQR Code Generator
Create QR codes from text, URL, Wi-Fi, and vCard with customizable colors and export to PNG or SVG.
Open QR generatorUUID Generator
Generate UUID v4 and v7 in the browser with batch mode, formatting options, copy, download, and validation.
Open UUID generatorTimestamp Converter
Convert Unix timestamp (seconds or milliseconds) to date and back with ISO UTC and local time output.
Open timestamp converterColor Tools
Convert HEX, RGB, and HSL values, preview the selected color, and quickly copy generated shades.
Open color toolsGoogle Soft Colors
Browse soft Material-inspired color palettes for UI and copy JSON or CSS variables for your theme.
Open Google soft colorsJSON/YAML Toolbox
Format, validate, and convert JSON and YAML in both directions directly in the browser.
Open JSON/YAML toolboxJWT Decoder
Decode JWT header and payload, inspect claims and expiration — fully in the browser.
Open JWT decoderDiff Checker
Compare two texts line by line with side-by-side highlights and unified diff in your browser.
Open diff checkerHTTP Request Builder
Light REST client in the browser: method, URL, headers, body, and response view.
Open HTTP request builderJava Playground
Run a lightweight Java subset in the browser: main, variables, loops, and System.out.println.
Open Java playgroundPython Playground
Run Python in the browser with Skulpt: print, loops, functions, and lists for early lessons.
Open Python playgroundMath 1–6
Elementary math helper: arithmetic, fractions with steps, percents, area and perimeter in the browser.
Open Math 1–6Math 7–11
Algebra for grades 7–11: equations with steps, function graphs, Pythagoras and circle formulas.
Open Math 7–11OGE / EGE Math Trainer
Full part-1 exam variants for OGE and EGE math: generated tasks, answer check, and step-by-step solutions.
Open OGE / EGE trainerCollaborative boards
Shared whiteboards for lessons and study groups: sticky notes, polls, sketches, and real-time collaboration in the browser — no install required.
Open collaborative boardsSAT / ACT Math Practice
Full SAT Math (44 questions) and ACT Math (60 questions) with multiple choice and grid-in, scoring and solutions.
Open SAT / ACT Math