Open source. Open possibilities.

An interactive visual learning platform designed to make algorithms and data structures easy to understand through step-by-step animations, custom inputs, and playback controls.

RAWGraphs is an open-source web tool for creating custom vector-based data visualizations from tabular data, built on d3.js. It runs entirely in the browser with no server-side processing, and exports editable SVG output.

A comprehensive curated collection of tools and recipes for Go projects, covering testing, dependencies, visualization, and static analysis.

Metabase is an open-source business intelligence and embedded analytics tool designed to allow users to query data and create dashboards without requiring SQL knowledge.

ChartDB is an open-source, web-based database diagram editor that lets you visualize schemas instantly with a single query. No installation or password needed. Supports multiple databases and AI-powered SQL export.

deck.gl is a GPU-powered visualization framework designed for high-performance rendering of large-scale data sets using WebGL2 and WebGPU.

FiftyOne is an open-source tool for building high-quality datasets and computer vision models. It enables users to visualize, label, evaluate, and curate visual AI data.

Helio is a data visualization tool that transforms raw data from CSVs, SQL databases, or REST APIs into personalized dashboards using visual pipelines and AI-assisted editing.

Excelize is a pure Go library for reading and writing Microsoft Excel spreadsheets in XLAM, XLSM, XLSX, XLTM and XLTX formats. It supports Excel 2007+ files, chart and image insertion, complex spreadsheet components, and a streaming API for large worksheets.

A cross-platform, audio-reactive visualizer featuring real-time system audio capture and high-performance WebGL2 rendering.

FlowGram is an extensible workflow development framework providing built-in tools including canvas, form, variable management, and pre-built materials (like LLM, Condition, Code Editor). It enables developers to build custom AI workflow platforms with visual composition and integration capabilities.

plotly.py is an interactive, open-source, browser-based graphing library for Python, built on plotly.js. It provides 30+ chart types, works in Jupyter notebooks, standalone HTML, and Dash apps, and is MIT licensed.

Peaky Peek is a local-first, open-source audit and trust console for AI agents. It captures causal chains, verifies claims deterministically, and produces explainable trust scores with failure narratives — all running on your machine.

EasySpider (易采集) is a free visual browser automation and web scraping tool with a no‑code GUI, command‑line mode, flowchart‑style task design, looping, conditional branches, OCR, custom JS/Python, MySQL output, scheduled and parallel runs, IP pool switching, and AGPL‑3.0 license; featured at WWW 2023 with a patent and a Zhejiang University thesis.

A collection of front-end visual effect cases (Vue version) featuring over a hundred examples including CSS animations, Canvas, Three.js 3D, and AI applications, with a corresponding React version available.

Redash is a browser-based data exploration and visualization tool that allows users to query, visualize, and share data from various SQL and NoSQL sources.

D3 is a free, open-source JavaScript library for visualizing data. Built on web standards with a low-level approach, it renders dynamic, data-driven graphics using SVG, Canvas and HTML, and serves as a foundation for many higher-level chart libraries.

A cinematic Git commit replay tool for the terminal that transforms Git history into animated stories with realistic typing and syntax highlighting.

Plotly.js is a standalone JavaScript data visualization library used to create a wide variety of interactive charts and graphs.