Tools

Free online invoice maker for freelancers and small businesses. Create professional invoices, track billing, and get paid faster.

Free online resume builder for job seekers. Build ATS-friendly CVs with clear sections and export a polished resume in minutes.

Tailor shop management software and offline-first measurement ledger. Orders and customer data live in your Google Drive—search by invoice, track deliveries, and protect privacy with no central server.

Daily planner and productivity app to organize tasks, habits, and focus blocks in one lightweight workflow.

Free online JSON formatter and validator. Beautify JSON, catch syntax errors, and view structured data with syntax highlighting in your browser.

Free Base64 encoder and decoder online. Encode text or small files to Base64 and decode Base64 strings instantly—no install required.

Free URL encoder and decoder for developers. Percent-encode query strings, decode encoded URLs, and handle reserved characters safely.

Free online color picker for web and UI design. Copy hex, RGB, and HSL values, build palettes, and match colors for CSS and mockups.

Online regex tester and debugger. Run regular expressions against sample text, see matches in real time, and fix pattern bugs faster.

Free SQL formatter and beautifier online. Pretty-print SELECT and DDL statements, add indentation, and read complex queries more easily.

Free online Markdown editor with live preview. Write READMEs, docs, and notes with split view and export when you are finished.

Free online hash generator for MD5, SHA-1, SHA-256, and more. Hash text or files for checksums, API debugging, and security workflows.

Unix timestamp converter online. Turn epoch seconds into local dates, compare time zones, and debug APIs that use ISO-8601 or Unix time.

Free text and code diff checker online. Compare two snippets side by side with highlighting to review changes, configs, or copy.

Free text case converter for camelCase, snake_case, PascalCase, kebab-case, and more. Refactor variable names and strings in one step.

Strong random password generator online. Create secure passwords with custom length, symbols, and strength feedback for logins and secrets.

Free Lorem Ipsum generator for designers and developers. Produce placeholder paragraphs, sentences, or word counts for layouts and mock data.

Free UUID and GUID generator online. Create RFC-style unique identifiers, bulk-generate IDs for tests, APIs, and databases.

Free QR code generator online. Build QR codes for URLs, plain text, Wi-Fi, and vCards with adjustable size and colors for print or web.

Free JWT decoder and encoder in the browser. Inspect JSON Web Tokens, verify HS256–HS512 signatures, and debug OAuth and APIs like jwt.io.

Free CSV to JSON converter online. Parse spreadsheets into JSON with header rows, custom delimiters, and instant preview for data pipelines.

Free HTML formatter, beautifier, and minifier online. Tidy markup, spot structure issues, and shrink HTML for faster page loads.

Cron expression generator and human-readable explainer. Build Linux crontab schedules with presets, validate syntax, and decode jobs to plain English.

Free YAML ↔ JSON converter online. Transform Kubernetes, CI, and app configs both ways with formatting and validation in the browser.

Git hosting, pull requests, Actions CI/CD, and code search—GitHub is the default platform for Git collaboration and open-source software.

Deploy Next.js, static sites, and serverless functions to a global edge network with preview URLs, analytics, and automatic HTTPS.

Collaborative UI and UX design in the browser—wireframes, high-fidelity screens, prototypes, and design-system handoff for product teams.

Notion combines docs, wikis, databases, and kanban boards so teams can plan roadmaps, write specs, and share knowledge in one place.

LangChain chains LLMs with tools, memory, and retrievers so you can ship agents, RAG apps, and structured workflows on top of any model.

LlamaIndex ingests PDFs, wikis, and databases into indexes so LLMs can answer questions with citations and retrieval-augmented generation (RAG).

PostgreSQL is a mature open-source SQL database with JSON support, extensions, and strong ACID guarantees for web apps, analytics, and OLTP.

Supabase pairs managed Postgres with auth, storage, edge functions, and realtime channels—an open backend for mobile and web apps.

Pinecone is a managed vector database for semantic search, recommendations, and RAG at scale with low-latency nearest-neighbor queries.

Jest is the go-to JavaScript unit test runner for React and Node—snapshots, mocks, and watch mode with minimal configuration.

Playwright automates Chromium, Firefox, and WebKit for reliable end-to-end tests, visual regression, and CI-friendly browser coverage.

TypeScript adds static types to JavaScript for safer refactors, autocomplete, and large codebases—compiles to plain JS for any runtime.

Tailwind CSS is a utility-first styling system—compose responsive layouts, dark mode, and design tokens without leaving your markup.

Docker packages apps into portable containers so dev, staging, and production stay consistent across laptops, CI, and Kubernetes clusters.

Linear is a fast issue tracker and product roadmap tool for software teams—keyboard-first triage, cycles, and GitHub integrations.

Raycast is a macOS launcher with extensions, clipboard history, snippets, and scripts—replace Spotlight with a developer-focused command palette.

Obsidian is a local-first notes app with Markdown files, graph view, and plugins for personal knowledge management (PKM) and research.

Midjourney generates high-quality AI art and concept imagery from text prompts—popular with designers for mood boards and creative exploration.

Stability AI publishes open and commercial diffusion models for image and video, plus tools for creative pros and generative AI research.