Over the years I've built a great number of Magento 1 modules. Many of them I can't even remember, or they were not tracked after being released into the wild. I eventually decided to catalog them here before being lost forever. This list is continually being updated.
A multi-store login detection system which would prompt visitors with cross-website accounts to select their destination store view.
A responsive product quick-view integration with full PDP capabilities.
A fully-automated system for purging unused catalog images.
A low-level, event-based order process flow monitor.
A Sage VDS implementation helper module that deploys a virtual design studio link to product pages.
An extension that aggregates distributor inventory for display on the B2B catalog.
The official Magento connector for HubShop.ly.
A visitor tracking system that helps to debug specific user journeys.
A custom ERP integration stringing together several platforms for a hunting equipment retailer.
A related products enhancement using the Jetlore platform.
A tracking integration to send visitor data to the Jetlore platform.
Just another access restriction module.
A customized Slack integration for Magento event notifications.
A built-in reporting tool that provides SKU-level data for coupon usage.
An event-tracking builder for Magento that sends data to Listrak's API.
A connector interface for Beanstalk repository webhooks.
A managed service client provisioning system built on Magento.
A Harvest time tracking API connector for Magento.
An internal aggregator of Magento security patches with knowledge base articles.
A series of resource planning tools for internal use.
A module for receiving comments and forwarding them to a target Slack channel.
An extension of the popular Paradox Labs integration that provides alternate API account storage.
A custom refer-a-friend module with unique customization options.
An employee content management widget.
A price extension that offers unit-based price options and unique custom option enhancements.
A drop-in replacement for Magento Enterprise gift card accounts using Valutec services.