Markitdown

DSH Hub is a curated directory dedicated to DeepSeek Harness plugins and clients. All projects point to public GitHub repositories and can be explored by category, popularity, or latest verification, helping developers safely and efficiently extend their Harness workflows.

DSH Plugin is an independent DeepSeek Harness plugin directory and registry, cataloging 262+ community plugins across 8 major categories: visual processing, UI productivity, terminal TUI, development tools, browser integration, security policies, skill workflows, and remote execution. It provides intelligent analysis based on public source repositories, security signal detection, version compatibility evidence, and structured installation commands, helping users comprehensively understand plugin functionality and risks before installation.

OfoxAI is a unified large language model API aggregation platform for developers, allowing access to over 100 top models such as OpenAI, Anthropic, Gemini, DeepSeek, Qwen, Kimi, Doubao, GLM, and Mistral through a single API endpoint. It supports three categories: code models (inference, refactoring, Agent building), image models (generation, editing, refinement), and video models (text/image-to-video generation, optional audio). The platform offers 99.9% uptime, low latency of around 300ms, and compatibility with the OpenAI SDK format, enabling seamless migration by simply modifying base_url and api_key. Featured functions include Vibe Coding (AI-assisted coding), model verification, usage leaderboards, and model recommenders. In July 2026, a 20% discount on the GPT-5.6 series will be launched, offering discounted prices directly upon calling all GPT models (including gpt-5.6-sol/terra/luna, gpt-5.5, gpt-image-2, etc.) without requiring deposits or coupons. Team collaboration is supported, with one person's deposit shared across the team, and administrators can view each member's usage.

SandBase is a native infrastructure platform designed for AI Agent builders, providing a unified sandbox environment, model invocation, MCP server integration, skill management, and long-session workflow support for Codex, Claude, Sandy, and custom Agents. Through API, CLI, and MCP access paths, developers can run code sandboxes, invoke 250+ models, connect to external tools like GitHub, manage custom skills, and implement persistent Agent sessions with state tracking on the same platform. The platform adopts a zero monthly fee, pay-as-you-go pricing model, offering $1 free credit upon registration and 100 hours of sandbox runtime free for 6 months, suitable for Agent deployments ranging from individual developers to enterprise-grade production teams.

Claude Certified Architect is an independent preparation platform for the Claude Certified Architect exam (CCA-F), building a complete learning system around the official 5-domain blueprint. The platform offers structured courses aligned with the official blueprint, a 120-minute full-length mock exam with 60 questions, Leitner spaced-repetition flashcards, free domain-specific study guides and diagnostic tests, and supports five languages: English, Japanese, Korean, Brazilian Portuguese, and Simplified Chinese. It covers five core domains: Agentic Architecture & Orchestration (27%), Tool Design & MCP Integration (18%), Claude Code Workflows (20%), Prompt Engineering & Structured Output (20%), and Context Management & Reliability (15%), providing a clear path from blueprint learning to certification.

WebsiteScreenshot is a free online website screenshot and scrolling video capture tool. Take full-page screenshots up to 20,000 pixels long, capture viewport-only snapshots, or record smooth scrolling walkthrough videos in PNG, JPEG, PDF, MP4, and GIF formats. No registration required for basic use. Features include custom resolutions, device simulation (desktop/tablet/mobile), ad blocking, cookie/GDPR banner removal, capture delay, and API access. Perfect for developers, designers, marketers, and QA teams who need clean, professional website captures for demos, reviews, documentation, and client presentations.

Fotools is a comprehensive free online developer tools platform offering 100+ utilities across JSON processing, encoding/encryption, network diagnostics, frontend/backend development, unit conversion, multimedia editing, image processing, document conversion, and text manipulation. No installation or registration required — all tools run directly in your browser with fast, secure processing. Perfect for developers, designers, content creators, and everyday users who need quick access to YAML/JSON converters, Base64 encoders, code formatters, video compressors, PDF tools, QR code generators, and more.

Vivgrid is a comprehensive AI agent infrastructure platform offering observability, debugging, evaluation, testing, and deployment with a globally distributed GPU network. From prototype to production, Vivgrid provides full visibility into prompts, API calls, memory fetches, and tool usage with <50ms inference latency. Support multi-agent orchestration, stateful memory, safety guardrails, and real-time monitoring across gpt-4.1, gemini-2.5-pro, Claude, deepseek-r1, and more LLMs for resilient AI systems.