Based on our record, File-Extensions.org seems to be more popular. It has been mentiond 1 time since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
File-extensions.org lists following files for .3 extension:. Source: about 1 year ago
Jason - Infinitely hackable mobile client
FileProInfo - It's All About Files, Software, Online Tools - 100% Free
Kamon.io - Kamon makes an instrumentation library and Application Performance Monitoring tool that helps developers find and fix performance issues in microservices. Works best for Scala (Akka, Play, Lagom) and Java.
FileInfo.com - FileInfo is the central file extensions registry and contains a database of over 10,000 file types.
WorkForce Software - WorkForce Software provides workforce management solutions for organizations with complex policies and compliance concerns.
FILExt - Open, view and convert files online