FreeDevTool.App is a comprehensive collection of open source developer tools with offline functionality
Zero-dependency .NET implementation of the Open Knowledge Format (OKF) v0.2: knowledge bundles as directories of markdown files with YAML frontmatter. Library, CLI validator, static site renderer, Agent Framework tools and MCP server.
In-browser code formatter for 12 languages — Prettier, Ruff, sql-formatter. Encrypted sharing, JSONPath, JWT decoder, offline PWA. Your code never leaves the tab
Updated Zotero Integration literature note template for Obsidian, using YAML frontmatter and Properties. A drop-in replacement for the template in Alexandra Phelan's academic workflow guide.
YAML ⇄ JSON conversion with human-readable errors and YAML 1.1 vs 1.2 (Norway problem) warnings — the engine behind yamltojsonfree.com
Client-side YAML toolbox with 36 tools for editing, validating, formatting, converting, diffing, merging and generating Kubernetes, Docker and CI configs. Everything runs in the browser, nothing is sent to a server.
Free, local-first developer tools that never upload your data: JSON, YAML, XML and SQL formatters, business day and timestamp calculators, image compression, Base64, hashes, UUIDs, JWTs and Morse code. Runs entirely in the browser at liveparse.com
Validate YAML and convert it to JSON and back in your browser with exact error lines. Free, private alternative to Online YAML parsers and YAML to JSON sites: runs in your browser, nothing is uploaded.
Format, validate, convert and diff JSON, XML and YAML files. A small web tool built with Next.js and Monaco Editor. Paste or drag in a file, clean it up, switch formats, or compare two versions side by side.
Free online YAML validator & formatter — validate, format and convert YAML, all in your browser.
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