Best Developer Tools Tools

A browser-based Salesforce debug log analyzer that visualizes execution timelines with flame graphs, tracks governor limits, and breaks down SOQL/DML performance. Paste logs directly or connect your org to fetch them automatically—no data leaves your machine.

An open-source data catalog that helps teams discover, organize, and manage their data assets with AI-native features like search, lineage tracking, and MCP integration. Built for developers and data engineers who want powerful data governance without enterprise overhead.

Evaliphy is an end-to-end testing framework for AI features that lets developers write TypeScript assertions and catch regressions in CI, designed for software engineers rather than ML researchers. It enables testing of real APIs and RAG systems without requiring machine learning background knowledge.

A free, browser-based file converter that transforms 50+ file formats (images, data, documents) entirely on your device with zero server uploads or data collection. All conversions use client-side technologies like WebAssembly and Canvas API to ensure complete privacy.

A Kubernetes operator that simplifies self-hosting Langfuse (an LLM observability platform) with automated deployments, upgrades, and migrations. Designed for platform teams needing production-ready LLM monitoring infrastructure without manual configuration overhead.

An MCP (Model Context Protocol) tool that enables Claude and other coding agents to generate beautiful, codebase-aware UI designs that match your product instead of generic AI-generated layouts.

TestRelic AI uses artificial intelligence to help QA teams quickly identify why their Playwright tests failed by asking natural language questions instead of manually debugging logs. It generates actionable artifacts like dashboards and reports directly from live test data without requiring manual queries or configuration.

A desktop IDE for video engineers that wraps FFmpeg, ffprobe, and MediaInfo into a unified workspace with project management, tabbed files, and job queuing. Inspect, convert, analyze, and validate video files without using the terminal.

M3U8 Player is a free online toolkit for HLS and M3U8 streams. It lets users play M3U8 links in the browser, download M3U8 streams, and convert M3U8 to MP4 without installing desktop software or creating an account.

Free browser-based tools for PDF, images, text & developers. Files never leave your browser. No signup. AI agent API included.

Compare text, JSON, and code side by side. Find differences instantly. Includes JSON formatter, Base64 encoder, and word counter. Compare text, code, and JSON — right in your browser sidebar.

NextName is a fast domain research platform for checking availability, running WHOIS lookups, comparing registrar pricing, and inspecting DNS and SSL data in one place.

Free browser-based image tools — resize, compress, convert, make OG images, generate QR codes, extract color palettes. No signup, no upload to servers.

Mock blocked APIs, passthrough ready routes, see live source

Codex Claude Gemini CLI parallel agents orchestration

Open-source visual framework for building multi-agent and RAG applications. Native MCP support with ready-made agent components.

OpenAI's official Python SDK for building agentic AI applications. Lightweight framework with tool use, handoffs, and guardrails built in.

Graph-based agent orchestration framework by LangChain. Build stateful, multi-agent workflows with loops, branching, and parallel execution.

Open-source visual AI workflow builder. Build AI agents and chatbots with a drag-and-drop interface. Self-hostable with LangChain integration.

Developer-first application security platform. Scans code, cloud, containers, and dependencies for vulnerabilities in one unified dashboard.

Google's Node.js library for controlling headless Chrome/Chromium. Automate browser testing, scraping, screenshot generation, and PDF creation.

Open-source API development ecosystem. A lightweight, fast alternative to Postman for testing REST, GraphQL, and WebSocket APIs.

Industry-standard desktop website crawler for technical SEO audits. Identifies broken links, duplicate content, crawl errors, and on-page issues.

A modern, highly configurable terminal emulator with serial port support, SSH client, and extensive customization options.

Stop babysitting your terminal