Features of EverCal :
Clean UI: Minimalist design with Material 3/Expressive UI guidelines
Manual Events: Create events directly inside EverCal.
ICS Import: Import .ics calendars from Google Calendar, Outlook, or anywhere else.
Khal / vdir Support (Optional): Read events from your local vdir calendars via khal
Theme Support: Built-in Light and Dark modes. Also supports a global theme state and updates instantly when your system/theme changes.
WM + DE Friendly:
WM mode: no titlebar/client decorations (border handled by the compositor).
DE mode: proper titlebar included for environments like KDE/GNOME.

Features of Helium :

Ungoogled Foundation: Built on ungoogled-chromium, it strips out all Google-specific telemetry, API keys, and background tracking services.

Integrated uBlock Origin: Shipped as a native component, providing robust ad and tracker blocking by default without requiring manual setup.

Anonymized Extension Installs: Proxies all requests to the Chrome Web Store through Helium's own services to prevent Google from linking extension downloads to your IP or user profile.

Manifest V2 Support: Maintains support for MV2 extensions longer than standard Chrome, ensuring powerful ad blockers continue to work effectively.

Local-Only Data: Intentionally excludes cloud sync and built-in password managers to keep sensitive data strictly on your local device.

Features of Pagan :

• Use your own soundfont (.sf2)
• Import, reorchestrate and export .mid files
• Connect to and playback through Midi devices
• Variable Tone Tuning (not just 12)
• Export .wav files
• Variable sized steps-per-beat-per-instrument