aCalendar vs Shadowbox

Professional comparison and analysis to help you choose the right software solution for your needs.

aCalendar

Shadowbox

aCalendar vs Shadowbox: The Verdict

⚡ Summary:

aCalendar: aCalendar is an open-source calendar and scheduling application for Android. It features a simple interface for managing events, reminders, and tasks. Syncs with various services like Google Calendar.

Shadowbox: Shadowbox is a JavaScript library that enables website users to view images, video, and other content in lightbox-style popups. It provides an elegant overlay display and rich media support without requiring Flash.

Both tools serve their respective audiences. Compare the features, pricing, and user ratings above to determine which best fits your needs.

Last updated: May 2026 · Comparison by Sugggest Editorial Team

Feature	aCalendar	Shadowbox
Sugggest Score	—	—
Category	Office & Productivity	Photos & Graphics
Pricing	Open Source	Open Source

Product Overview

aCalendar

Description: aCalendar is an open-source calendar and scheduling application for Android. It features a simple interface for managing events, reminders, and tasks. Syncs with various services like Google Calendar.

Type: software

Pricing: Open Source

Shadowbox

Description: Shadowbox is a JavaScript library that enables website users to view images, video, and other content in lightbox-style popups. It provides an elegant overlay display and rich media support without requiring Flash.

Type: software

Pricing: Open Source

Key Features Comparison

aCalendar Features

Month, week, day, agenda views
Recurring events
Reminders and alarms
Synchronization with Google Calendar
Integration with contacts
Multiple calendar support
Event sharing via SMS, email
Search events
Customizable widgets
Multiple color themes

Shadowbox Features

Displays photos, videos, PDFs, and other content in pop-up overlays
Works with common media formats like YouTube, Vimeo, Flickr, etc.
Customizable with themes, transitions, animations
Keyboard shortcuts
Social media sharing options
Responsive design
Works on mobile and touch devices
Lightweight codebase

Pros & Cons Analysis

aCalendar

Pros

Open source
Simple and easy to use
Good integration with Android
Syncs with Google Calendar
Basic features for free

Cons

Limited features compared to proprietary options
No support for iOS or web
Sync issues reported
Development seems stagnant

Shadowbox

Pros

Enhances user experience for media-rich sites
Easy implementation with minimal coding
Good documentation and support
Open source and free
Wide browser support
Customizable without coding
Lightweight performance

Cons

Can be tricky to customize extensively
Occasional bugs or inconsistencies
Not ideal for large volumes of media content
Limited native video player features
Development has slowed in recent years

Pricing Comparison

aCalendar

Open Source

Shadowbox

Open Source

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