Open-source developer utilities — data conversion, automation, and lightweight web tools.
supabaseCleaner is a free browser-based CSV data cleaning tool that uses pattern-based presets to validate, transform, and fix messy spreadsheets from Amazon, Shopify, Salesforce, and other platforms—with no data uploads, ensuring 100% privacy.
PapaParse · Supabase · Vercel Serverless Functions
waferAnalyzer is a free, client-side data quality tool that instantly profiles CSV, Excel, and JSON files to detect missing values, duplicates, outliers, mixed types, and business logic errors, then delivers a quality score and actionable cleaning recommendations—all without uploading your data anywhere.
HTML · CSS · Vanilla JS
waferBoard is a markdown‑driven dashboard tool that lets you build interactive, data‑rich dashboards by writing clean markdown with special directives for stats, charts, and components.
JavaScript · Chart.js · Marked.js
waferMarkdown is a full‑screen markdown viewer, editor, and export tool that lets you load .md files, edit them live, and export to HTML or PDF in a clean, minimal, and fast interface.
HTML · CSS · Vanilla JS