Developer tool / API businesses launched recently
APIs, libraries, infrastructure and tools for developers. New developer tool / api launches collected daily from Show HN and Product Hunt, grouped by category, with a one-click idea check for your own version.
Skir
Modern serialization format and code generation tool.
GitAgent
Open standard defining AI agents as files in Git repositories.
Mog Programming Language
Statically typed embedded language designed for LLM generation.
Local Document Parsing
Local document processing library for AI agent applications.
FFmpeg Subtitle Converter
Fixes FFmpeg subtitle conversion between different formats like SRT to PGS
Tmux-IDE
Terminal-based IDE designed for multi-agent agentic engineering workflows
Pgit
Git-compatible CLI version control system backed by PostgreSQL
Nit
Git implementation in Zig that reduces AI token costs by 71%
Littlebird
Screenreading tool for improving AI accessibility
Sheet Ninja
Use Google Sheets as a database backend
Home Maker
Declare and manage dev tools in a Makefile
Veil
Dark mode PDF viewer that preserves images
Gridland
Build terminal apps that run in browser and native
Email.md
Convert Markdown to responsive email-safe HTML
Video.js
Open-source video player library used by billions monthly
Pluck
Copy UI components from websites and paste into AI coding tools
Docking
Extensible Linux dock with 38 applets and multi-monitor support
AdaShape
3D modeler for designing 3D-printed parts on Windows
ctx
Development environment for building with AI agents
Baton
Desktop app to manage multiple Claude Code agents
Pace
Claude connector for analyzing wearable health data in natural language
Output.ai
Open source framework extracted from 500+ production AI agents
Waffle
Native macOS terminal that auto-tiles sessions into a grid
Orange Juice
Browser extension with small UX improvements for Hacker News
FluidCAD
Parametric CAD tool controlled with JavaScript code
Ilha
Lightweight UI library optimized for AI context windows
Nyx
Autonomous testing harness for AI agent vulnerabilities
Agent Communication Tool
Lightweight framework for agents to communicate without API costs
Lightwhale
Immutable Linux OS for easy self-hosted Docker containers
Markdown TUI
Terminal UI for viewing and editing Markdown files with syntax highlighting
GeoTraceroute
3D globe visualization of network traceroutes and submarine cable paths
LLM Determinism Benchmark
Test suite for LLM structured output reliability
Pu.sh
Minimal shell-based coding agent framework in 400 lines
GhostBox
CLI tool for ephemeral machine provisioning on GitHub Actions
Utilyze
Accurate GPU monitoring tool with better metrics than nvtop
Tack
Tool to mark points and regions on images
CADara
Open-source in-browser CAD application
Mochi.js
Bun-native browser automation library using CDP
Agent Harness Kit
Scaffolding framework for multi-agent workflows
Open Email Builder
Open-source email builder alternative
Epiq
Git-based issue tracker with TUI for terminal workflows
Neural Snake Demo
In-browser neural network training demo using WebGPU
Pablo
Chrome extension that extracts HTML and CSS from any website element
C++ AST Explorer
Interactive tool for exploring and analyzing C++ abstract syntax trees
Open Envelope
JSON schema standard for defining and deploying AI agent teams
Audiomass
Free open-source multitrack audio editor that runs in your browser.
DropLock
End-to-end encrypted secret sharing web app with no server backend.
Textile
Desktop app for combining text from commands, clipboard and hardcoded strings.
Listings are collected from public launch sites and classified by keyword; models and categories are corrected by an editor over time. Links go to the business itself; we have no relationship with any of them.