This project investigates the advantages and limitations a decentralized contact discovery system for a messaging application may have. The areas of interest in this project concerns performance and scalability of the system. The simulator uses a mathematical approach where each task’s expected runtime was estimated from experiments or previous…

Google Python email scraping utility with validation

youtube wealth coach leads extraction

googlemaps local business extractor

Open-source Claude skill packs for B2B GTM teams. Covers ICP definition, account research, lead scoring (FIRE framework), prospecting, meeting prep, outbound strategy, and inbound routing.

An improvement on the PoC for the privacy-preserving contact discovery scheme I implemented as part of my UCL masters degree

telegram email extraction tool

Browser-based Private Set Intersection demo implementing classic DH-PSI (Meadows 1986, Huberman-Franklin-Hogg 1999) over ristretto255 with RFC 9380 hash-to-curve. The primitive behind Signal contact discovery and Apple password monitoring.

ReachIn is a Chrome extension that collects publicly available email addresses from LinkedIn search result pages.

Hunter is an email finding and verification service that helps find professional email addresses associated with a domain and verify email deliverability.

Instacart email extraction tool

Bandcamp email extraction tool

Privacy-first messaging backend with OPRF contact discovery, ephemeral key lifecycle enforcement, and ratchet-bound media keys. Rust/gRPC.