coldcaller.pro is a French B2B prospecting SaaS selling qualified cold-calling leads to solopreneurs and agencies. Leads come enriched with the owner's direct mobile + email. Subscriptions €19–99/mo, no free trial, ~9% visitor-to-paid conversion, €2.4k MRR with minimal fixed costs (93% margin). 100% community driven acquisition (word of mouth). Runs solo — big upside with paid ads or a sales team.

Providing coaching and mentorship to aspiring software engineers.

MobileAPI.dev is a REST API that provides comprehensive device specifications, images, and pricing data for 30,000+ mobile devices from 200+ brands. It covers smartphones, tablets, smartwatches, and laptops. Features include fuzzy search with match-certainty scoring, autocomplete, manufacturer filtering, and an AI-powered natural-language query endpoint. Free tier includes 200 requests/month. Pro plan at $15/month with 10,000 requests. API key authentication, HTTPS, CORS enabled.