# web-based

Visualize JSON, YAML, XML, and CSV as interactive graphs

JSON Crack transforms structured data files into interactive, visual graphs that make complex nested data easy to understand. Paste or import JSON, YAML, XML, CSV, or TOML and instantly see the data as a navigable node graph with collapsible sections, search, and path highlighting. All processing happens client-side with no server storage.

Ultrafast web framework built on Web Standards for every runtime

Hono is a lightweight, ultrafast web framework built on Web Standards that runs on Cloudflare Workers, Deno, Bun, Node.js, AWS Lambda, and any JavaScript runtime. At just 12kB with zero dependencies, it delivers router performance matching raw platform speed. Hono provides first-class TypeScript support with RPC-style client for end-to-end type safety, built-in middleware for auth, CORS, caching, and OpenAPI generation, plus JSX support for server-rendered HTML.

Python web framework with HTMX, no JavaScript needed

FastHTML is an open-source Python web framework by Answer.AI that renders HTML directly from Python functions using HTMX. It eliminates the JavaScript build step entirely, letting developers create interactive web apps with pure Python. FastHTML is designed for AI demo apps, admin tools, and internal tooling where full-stack simplicity matters more than SPA complexity. Built by Jeremy Howard's team.

StackBlitz's browser-based Node.js runtime for instant dev environments

WebContainers by StackBlitz runs Node.js natively in the browser using WebAssembly, enabling full development environments without server infrastructure. It powers StackBlitz and Bolt with instant project startup, npm package installation, and dev server execution entirely client-side. Supports Node.js APIs, filesystem operations, and terminal emulation within browser security constraints.

Google Chrome Labs visual design tool for editing live web pages

VisBug is a Chrome Labs browser extension that lets developers and designers edit live web pages visually. It provides tools for moving, resizing, and styling elements directly on the page with point-and-click interaction. Features include margin and padding visualization, typography editing, color modification, and accessibility inspection without touching code or opening DevTools.

All-in-one browser DevTools extension for web developers

Hoverify is a browser extension that consolidates essential web development tools into a single overlay interface. It provides element inspection with CSS details, responsive design testing, accessibility checking, color picking, screenshot capture, and asset downloading. Activated by hovering over any webpage element, it provides instant development context without opening browser DevTools.

Managed Postgres platform with 200+ extensions as pre-built stacks

Tembo is a managed PostgreSQL platform that packages 200+ Postgres extensions into purpose-built stacks for specific workloads. Stacks include OLAP analytics, vector search, message queues, geospatial, and machine learning, turning PostgreSQL into a specialized database for each use case. Eliminates the need for separate Redis, Elasticsearch, or Kafka instances alongside Postgres.

Google's AI-powered cloud IDE for full-stack app development

Firebase Studio is Google's cloud-based development environment that integrates Gemini AI for building, testing, and deploying full-stack applications. It provides browser-based coding with AI assistance for code generation, debugging, and database design. Connects natively with Firebase services including Firestore, Authentication, Cloud Functions, and Hosting for seamless deployment.

Free open-source screen recording for developer demos

Openscreen is a free, open-source alternative to Screen Studio for creating polished product demos and tutorials. With no subscriptions, no watermarks, and a commercial-use-friendly license, it provides professional screen recording with zoom effects, cursor highlighting, and export options — purpose-built for developers who create documentation and demo content.

BM25 full-text search extension for PostgreSQL

pg_textsearch is a PostgreSQL extension from Timescale that adds BM25 relevance-ranked full-text search directly inside Postgres. Using the same ranking algorithm as Elasticsearch and Lucene, it provides search-engine quality results without requiring a separate search cluster — particularly valuable for developers building RAG pipelines on PostgreSQL who want semantic-quality ranking alongside pgvector.

Self-hosted AI platform with RAG, agents, and 40+ connectors

Onyx is an open-core, self-hostable AI knowledge platform for enterprise search, RAG chat, deep research, custom agents, and workplace connectors. It connects to 40+ apps, supports permission-aware retrieval, and offers Cloud, Docker/Kubernetes, and enterprise deployment paths for teams that need controlled internal AI search.

macOS and Linux VM runtime for AI agents on Apple Silicon

Lume is an open-source CLI for creating and managing macOS and Linux virtual machines on Apple Silicon, built specifically for AI agent sandboxing, CI/CD pipelines, and desktop automation. Using Apple's native Virtualization.Framework for near-native performance, it provides the missing isolation layer for running coding agents safely — so an accidental destructive command doesn't affect your host machine.

Instant serverless TypeScript platform for APIs, crons, and bots

Val Town is a collaborative platform for writing and deploying serverless TypeScript functions instantly from the browser. Create APIs, cron jobs, email handlers, and bots with a single Cmd+S. Features version control, collaboration, and a social coding model where functions can import from other users. YC-backed with 450K+ monthly active users.

Auto-capture workflows into step-by-step documentation

Scribe automatically captures your on-screen workflows and converts them into step-by-step documentation with annotated screenshots. Simply perform a process with the browser extension or desktop app active, and Scribe generates a shareable guide with numbered steps, highlighted click targets, and descriptive text. Used for creating SOPs, training materials, and onboarding docs without manual documentation effort.

Browser-based AI SQL editor with modern UX

Sheeta.ai is a browser-based AI SQL editor designed to modernize the data workflow with a simple, intuitive interface and high-accuracy query generation. It addresses the UX gaps of traditional database tools like DBeaver by providing a clean, modern interface with AI-powered query suggestions, schema visualization, and result exploration built for the contemporary data stack.

Governed analytics with a unified semantic layer

Querio turns plain English into SQL queries with a focus on governed analytics, connecting to live data warehouses and enforcing a unified semantic layer across the organization. It ensures that AI-generated queries remain consistent with business logic definitions, preventing the common problem where different teams get different answers to the same question from the same data.

AI QA agent specialized for mobile apps

FinalRun is a specialized AI QA agent for mobile applications that automates testing of complex mobile gestures and flows on both iOS and Android platforms. It addresses the specific mobile QA gap that generic web-testing tools miss, handling touch interactions, swipe gestures, device rotation, and platform-specific behavior that require mobile-native understanding.

Secure text-to-SQL with schema-only processing

Text2SQL.ai is a secure text-to-SQL platform that uses a schema-only model where actual database data never leaves the developer's infrastructure. It provides an affordable solution for teams building internal analytics tools with a public API for embedding SQL generation into custom applications, prioritizing data privacy for organizations in regulated industries.

English-to-SQL with 100K+ users

AI2SQL converts plain English into optimized SQL queries with automatic schema detection, serving over 100,000 users worldwide. It features SQL explanation for learning, a formula generator for spreadsheets, and extensions for Slack and Chrome, providing a comprehensive ecosystem for non-technical users and developers who want to query databases faster using natural language input.

Lightweight virtual Kubernetes clusters

vCluster creates lightweight, isolated virtual Kubernetes clusters inside physical host clusters, enabling teams to run sandboxed environments for development, testing, and AI agent experimentation without provisioning separate infrastructure. Each virtual cluster has its own API server, control plane, and resource isolation while sharing the underlying compute, reducing infrastructure costs by up to 90% compared to full cluster provisioning.

Open-source Kubernetes cost monitoring (CNCF)

OpenCost is a CNCF-certified open-source tool for real-time Kubernetes cost monitoring that maps cloud spend directly to namespaces, deployments, pods, and labels. It provides granular cost allocation across teams and projects without vendor lock-in, supporting AWS, GCP, Azure, and on-premises clusters as the industry standard for open-source FinOps visibility in cloud-native environments.

Autonomous Kubernetes management and predictive scaling

Sedai provides an autonomous control layer for Kubernetes that right-sizes workloads, remediates anomalies, and performs predictive autoscaling ahead of traffic demand. Sedai says it manages large enterprise cloud environments for customers including Palo Alto Networks and builds behavioral models to scale pods before demand arrives rather than reacting after performance degrades.

Distributed event streaming platform

Apache Kafka is the industry standard open-source event streaming platform with 30K+ GitHub stars, used by 80% of Fortune 100 companies. Handles trillions of events per day with high throughput, low latency, and built-in fault tolerance. Features real-time stream processing via Kafka Streams, connectors for 100+ data sources, exactly-once semantics, and multi-datacenter replication. Foundation for event-driven architectures, real-time pipelines, and data integration at scale.

Hybrid search and ML ranking engine at scale

Vespa is an open-source serving engine with 6K+ GitHub stars for hybrid search combining vector similarity, BM25 text ranking, and structured filtering in a single query. Built by Yahoo for web-scale, it handles billions of documents with millisecond latency. Features real-time indexing, ML model serving, tensor computation, and ACID-compliant writes. Supports custom ranking models, query federation, and geographic search. Used for recommendation systems, personalization, and RAG.