File Extension Changer
Bulk-change file extensions in Windows or add an extension to files that don't have one. Preview changes before renaming.
OPEN CIRCUIT • UTILITIES
SOFTWARE & APPS
Free Windows and Android software from Open Circuit RC & Tech for file management, QuarkXPress document repair, RC calculations, astrophotography planning, and casual gaming.
Kill Pasteboard
Fix QuarkXPress 4 Windows documents that refuse to open because they require the old Pasteboard XT XTension. Kill Pasteboard creates a fixed copy and leaves the original untouched.
RC Toolbox
RC-focused calculator for android
Astro Sky Planner
Astrophotography companion Android app that shows the user the best sky objects for the location and conditions. Includes your local forecast, best targets and Bortle Class for the given location and much much more!
Simply Solitaire
A simple solitiare Android app
SUPPORT OPEN CIRCUIT • FREE SOFTWARE
ENJOYING THE APPS?
If you find these free tools useful, consider supporting their development. Every coffee helps keep new apps and utilities coming.
☕ BUY ME A COFFEE
If these apps have been useful, you can support their development with a coffee.
☕ BUY ME A COFFEE →
PAYPAL DONATION
Prefer PayPal? You can make a one-time donation to support Open Circuit RC & Tech.