Tagtaxa

Sinisa Drpa is an independent software developer who makes applications for the iPad, iPhone, and Mac under the company name Tagtaxa. The goal is to craft simple, yet useful utilities an provide total customer satisfaction.

Filter

Pattern Digger
Paid
Finds and maintains a list of special annotations in source code or any other text file.
Mac
Effect Stack
Trial version
Effect Stack is a non-destructive image editor for Mac which lets you chain image filters.
Mac
Insider
Paid
One-window app that helps you to find documents and text within them, combining Mac OS Spotlight with Unix find and grep.
Mac