Top Alternatives to Phototheca

IrfanView is free image viewer application for Windows.

XnView is an efficient multimedia viewer, browser and converter.

FastStone Image Viewer is a fast, stable, user-friendly image browser, converter and editor.

Shotwell is an image organizer designed to provide personal photo management for the GNOME desktop environment.

digiKam is a free and open-source image organizer and tag editor written in C++ utilizing the KDE Platform.

ACDSee is an image organizer, viewer, and image editor programs for Windows, macOS and iOS.

gThumb is an image viewer and organizer with a couple of limited options to also edit images.

JPEGView was a popular image viewer for Mac OS.

Zoner Photo Studio is a bitmap editor and image file manager is one of the most widely used programs for editing digital photographs.

Mylio is a photo organizer that slays your digital clutter.

Daminion specializes in LAN-based digital image management systems optimized for small teams, but their standalone Windows client is available for free.

FastStone Image Viewer is an image viewer and organizer for Microsoft Windows, provided free of charge for personal and educational use.

Viu 2 is a free image viewing/browsing software.