
LangSmith
Langfuse
Helicone AI
LangChain
Portkey
Humanloop
Braintrust.dev
Evidently AI
CodeUtil.dev
CodifyFormatter.org
DevToys
DuskTools.app
Text-Utils JSON Formatter
CyberChef
150+ Developer Tools
CodersTool
CodeUtil.dev is a collection of 20+ browser-based developer tools. JSON formatter & validator, regex tester, cron expression generator, Base64 encoder/decoder, JWT debugger, URL parser, hash generator, and more. Everything runs client-side โ no data leaves your browser. No sign-up needed, just open and use.
LangSmith
CodeUtil.devLangSmith is recommended for AI developers, machine learning engineers, and businesses aiming to build, test, and optimize applications based on language models. It is particularly useful for teams that require robust evaluation tools and a streamlined process for managing and deploying language-driven applications.
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CodeUtil.dev runs entirely in the browser โ all processing happens on your device, so your data never touches a server. It bundles 20+ tools (JSON, regex, Base64, JWT, cron, hashing, and more) under one roof with zero sign-up. Just open the page and start working.
Langfuse - Langfuse is an open-source LLM engineering platform that helps teams collaboratively debug, analyze, and iterate on their LLM applications.
CodifyFormatter.org - Free Online Tools like Beautify Code, Minifiy Code, Code Converter, Code Formatter, Viewer, Editor for Developer: JSON, XML, HTML, CSS, JavaScript, Java, SQL, CSV and Excel and String Tools
Helicone AI - Open-source LLM Observability for Developers
DevToys - A collection of converters, formaters, encoders, generators and other tools for your Windows desktop.
LangChain - Framework for building applications with LLMs through composability
DuskTools.app - 150+ free browser-based developer tools - no sign-up, no tracking, no backend. JSON formatter, Base64 encoder, regex tester, JWT decoder, UUID generator, HTTP status lookup, MIME types, port reference, cron builder & more. Everything runs locally in