Gab App Store - Gab App Store is the place to find apps either made by Gab or Mastodon clients that work with Gab.
Apple App Store - Install apps on your iDevice via the App Store.
F-Droid - F-Droid is an interesting alternative for Android users who want to try something different and not have to use the Goole Play store all the time.
ManageEngine EventLog Analyzer - EventLog Analyzer is an IT compliance and log management software for SIEM.
AppAgg - Application Aggregator
TheAppStore.org - Find apps by rating, price, category, updated date and more