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.

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.

AI assistant for social media comments and DMs on Facebook, Instagram and TikTok. It hides spam and negative comments, replies in the brand's voice using its own knowledge base, and opens a DM when a comment shows purchase intent. Built for brands, agencies and performance marketers running ad-heavy pages.