FounderSold Database

AI-powered service that produced automated code improvements and refactors for developers. Sold for $12,000.

WordPress plugin adding honeypot spam protection, database storage, redirection and webhooks to Contact Form 7. Its original developer announced on the WordPress.org support forum that the plugin had been acquired by WPExperts; price undisclosed.

Maker of an MCP server that lets AI assistants drive a live Unreal Engine editor by natural language to build blueprints, scenes, materials and VFX. Acquired by Aura; terms undisclosed.

Chrome and Firefox extension for regex-powered find-and-replace text editing directly on web pages. The extension was acquired by another developer team and the original repository was retired.

Hotel price comparison API that aggregated room rates from 200+ booking websites and returned the top three vendors with addresses, reviews and ratings as JSON. Sold through the Transferslot marketplace; price undisclosed.

Configurable CAPTCHA library built around accessibility and simplicity, earning about $5k in its first year and drawing roughly 4k monthly uniques before being open sourced. Sold via Transferslot; price undisclosed.

Ruby/Rails code snippet sharing site with tagging, launched around 2005 by Peter Cooper. He sold it after a couple of years for roughly $30,000.

A WordPress plugin that aggregates and republishes RSS feeds inside a site. It was bought by Ionut Neagu's Vertigo Studio, which acquires WordPress plugins in the $60k-$350k ARR range; the price was not disclosed.

A Notion call-to-action widget builder (Actions.so) made by Nandha; acquired within ~2 weeks for a mid four-figure sum.

A tool to build product landing pages directly inside a Notion workspace, made by Karthik; reached #2 Product of the Day on Product Hunt and was acquired for a four-figure sum.

Third-party plugin that pulled photos from a user Apple Photos shared album onto a TRMNL e-ink display. Built solo by Gustav Westling and acquired by TRMNL, becoming a first-party plugin.

RealEmail was an email-verification and validation tool that reduced bounces for senders; founder Stephen Nancekivell sold it for a five-figure sum on Acquire.com.

An Atlassian Marketplace app that auto-generates readable documentation of a Jira instance's project configuration. Its maker sold his first company with his first app.

LLM-friendly document generation aimed at developers, turning sources into clean machine-readable docs. Sold for $3,500.

WordPress-focused SaaS/internet tool. Sold on Flippa, seller in the US to a buyer in Germany.

A tool that synced data from Airtable, CSV files and WordPress into a Webflow CMS, supporting one-time imports and automated recurring syncs to keep website content current.

Turnkey WordPress developer tool that automates plugin generation, sold with brand, domain and codebase. Sold on Flippa to a buyer in Switzerland.

A tool that automatically generated dynamic Open Graph (social preview) images for websites based on page content, to boost social click-through rates.

Data scraping tool that automates web scraping and data workflows; sold as a small indie product on Acquire.com and later grown by its buyer to roughly $1.7M ARR.

Hosted Dogecoin wallet and payments API with a Node.js client library for developers accepting DOGE. Acquired by Block.io; terms undisclosed.