✨ A curated list of KSeF tools and resources

🧾 Free, open-source KSeF FA(3) invoice validator. XSD + semantic rules, runs in the browser. CLI & npm package included.

Artisanal Claude Code plugins, slow-proofed to perfection.

The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.

A complete AI agency at your fingertips - From frontend wizards to Reddit community ninjas, from whimsy injectors to reality checkers. Each agent is a specialized expert with personality, processes…

Emdash is the Open-Source Agentic Development Environment (🧡 YC W26). Run multiple coding agents in parallel. Use any provider.

Kotlin Multiplatform Push Notification Library targetting android, iOS, Desktop and Web (JS and Wasm)

Design engineering for Claude Code. Craft, memory, and enforcement for consistent UI.

BuildConfig for Kotlin Multiplatform Project

Claude Code skill implementing Manus-style persistent markdown planning — the workflow pattern behind the $2B acquisition.

SKIE - Swift Kotlin Interface Enhancer

fast multi-lang runtime

Library to use AndroidX/Kotlin ViewModels with SwiftUI

Kotlin for iOS using MVVM pattern with KMP ViewModel and Koin Injection

A Claude Code skill for autonomous skill extraction and continuous learning. Have Claude Code get smarter as it works.

Spec Driven Development 🤠 Write codebase-aware specs for AI coding agents so they don't derail.

Autonomous multi-session AI coding

🛰️ A versatile WebRTC pre-compiled Android library that reflects the recent WebRTC updates to facilitate real-time video chat for Android and Compose.

Command Line Google Play APK downloader. Download APK files to your PC directly from Google Play Store.

Google Play Downloader via Command line

Dex to Java decompiler

📘 OpenAPI/Swagger-generated API Reference Documentation

Executable GenAI prompt templates

🌀 OpenAPI to TypeScript codegen. Production-ready SDKs, Zod schemas, TanStack Query hooks, and 20+ plugins. Used by Vercel, OpenCode, and PayPal.

Python SDK, Proxy Server (AI Gateway) to call 100+ LLM APIs in OpenAI (or native) format, with cost tracking, guardrails, loadbalancing and logging. [Bedrock, Azure, OpenAI, VertexAI, Cohere, Anthr…

A TypeScript starter for engineering leaders to create single-purpose automation scripts. Clone → run → ship. Unified runner, AI agent friendly.

🎈 Modernized and sophisticated tooltips, fully customizable with an arrow and animations for Android and Jetpack Compose.