Show HN Daily Selection (2025-03-29)
- An Almost Free, Open Source TURN Server
- Hexi – Modern header-only network binary serialisation for C++
- Cursor IDE now remembers your coding prefs using MCP
- zxc – terminal TLS intercepting proxy in Rust with tmux and Vim as UI
- Context7 – LLM Code Snippets from Docs in Minutes
- Cloud IP Ranges
- MRI Image Viewer in Go
- Fully animated GitHub profile using SVGs (dark/light mode support)
- Searchable encryption, SQL proxy for Postgres
An Almost Free, Open Source TURN Server [Developer Tools]
21 points, 4 comments
An almost free, open-source TURN server using Oracle Cloud's free tier.
- Uses Oracle Cloud Infrastructure's free tier for minimal cost
- Self-hosted and open-source solution for WebRTC TURN servers
- Detailed end-to-end technical guide for setup
- Designed for users with basic networking and Linux knowledge
- Long-term reliability tested (5+ years on Oracle Cloud)
Discussion Link, Original Link
Hexi – Modern header-only network binary serialisation for C++ [Developer Tools]
65 points, 28 comments
Hexi is a modern header-only C++ library for efficient and safe binary serialization with minimal dependencies.
- Header-only design with zero dependencies beyond the standard library
- High performance with zero allocations and zero copies in many cases
- Built-in safety features to prevent vulnerabilities from malformed data
- Easy integration, suitable for both production and quick prototyping
- Supports custom buffer structures and allocators for optimized byte handling
Discussion Link, Original Link
Cursor IDE now remembers your coding prefs using MCP [Developer Tools]
82 points, 31 comments
Cursor IDE now remembers coding preferences and project specs using Graphiti's MCP for persistent memory.
- Custom entities capture coding standards, preferences, and procedures.
- Real-time updates adapt to changes in frameworks or standards instantly.
- Persistent retrieval ensures preferences are remembered across sessions and projects.
zxc – terminal TLS intercepting proxy in Rust with tmux and Vim as UI [Developer Tools]
4 points, 0 comments
A terminal TLS intercepting proxy in Rust with tmux and Vim as UI.
- Disk-based storage
- Custom HTTP/1.1 parser for malformed requests
- Supports HTTP/1.1 and WebSocket
- Includes proxy and Vim plugin components
Discussion Link, Original Link
Context7 – LLM Code Snippets from Docs in Minutes [Developer Tools]
4 points, 0 comments
LLM-powered tool for quickly generating code snippets from documentation.
- Extracts and converts documentation into usable code snippets
- Saves time by automating the snippet creation process
- Integrates with existing documentation sources
- Designed for developers working with LLMs
Discussion Link, Original Link
Cloud IP Ranges [Developer Tools]
6 points, 8 comments
A free service providing standardized public IP data from various cloud providers to block unwanted traffic.
- Collects and standardizes public IP ranges from multiple cloud providers
- Helps block traffic from cloud providers to prevent scraping and crawling
- Free to use and download
Discussion Link, Original Link
MRI Image Viewer in Go [Health]
4 points, 0 comments
A simple MRI image viewer written in Go to view DICOM files without needing Windows.
- Open-source tool for viewing MRI images in DICOM format
- Cross-platform compatibility (not limited to Windows)
- Created out of personal need for accessible medical imaging
- Encourages collaboration and improvements from the community
Fully animated GitHub profile using SVGs (dark/light mode support) [Developer Tools]
5 points, 2 comments
Animated GitHub profile using SVGs with dark/light mode support.
- Fully animated profile using SVGs
- Supports dark and light modes
Discussion Link, Original Link
Searchable encryption, SQL proxy for Postgres [Developer Tools]
8 points, 0 comments
CipherStash Proxy enables encrypted and searchable PostgreSQL data without modifying SQL queries.
- Written in Rust for performance and safety
- Uses formally type-checked SQL mapper
- Implements searchable encryption for sensitive data