Apps with 'Support for Themes' feature

Open-source browser with Gecko engine, supporting HTML add-ons and providing privacy features like Enhanced Tracking Protection and third-party cookie blocking.

Cross-platform, free media player supports multimedia files, DVDs, streaming, offers hardware acceleration, 4K, lossless audio, and more.

Free open-source code editor and Notepad replacement supporting multiple languages, featuring high speed, low resource usage, privacy focus, and plugin extensibility.

Obsidian is a note-taking app that lets you create a personal knowledge graph with ease. It is designed for non-linear thinking and allows you to easily link your notes together wiki-style.

Cross-platform email client providing POP/IMAP support, robust filtering, multiple accounts, and chat. Extendable via add-ons with RSS/Atom, etc.

Privacy-centric, open-source browser with unique UI features like vertical tabs, Split View, and Zen Glance, focusing on security and tranquility.

Open source vector graphics editor supporting SVG with features like custom brushes, pressure sensitivity, and layer management across multiple platforms.

Fast, secure browser with built-in ad block, privacy controls, and global tracking protections. Optimizes data, speed, and battery life.

Comprehensive software providing screen recording and live streaming on Mac, Windows, and Linux with powerful encoding support and unlimited scenes.

Web browser built on an open-source platform featuring multiple account support, integrated password manager, dark mode, real-time translation, and seamless cross-device syncing.

Secure Swiss-based email with end-to-end encryption and zero third-party access. Available across devices, offering a free version to promote privacy.

Free e-book manager offering library management, multi-format conversion, syncing to devices, news download as e-books, built-in viewer, editor, and privacy.

Free, extensible code editor with Git integration, AI-driven IntelliCode, and 30,000+ extensions, supporting various languages like Python, Java.

Experience instant messaging with remarkable speed and robust security. Join massive group chats or channels. Enjoy free and advanced features.

Open source note-taking app with Markdown support, to-do integration, and synchronization with cloud services like Dropbox and OneDrive.

Privacy-focused search engine offering Zero-click Info, instant answers, and more, built from open-source software for a user-friendly experience.

Desktop-focused Linux system offering custom menus, multimedia codecs, browser plugins, native DVD playback, and integrated software manager with user-friendly tools.

Ubuntu is a community developed, Linux-based operating system that is perfect for laptops, desktops and servers. It contains all the applications you need - a web browser, presentation, document and spreadsheet software, instant messaging and much more.

Highly customizable browser with built-in ad and tracker blockers, Chromium compatibility, advanced tab management, cross-device sync, and strong privacy features.

A versatile open-source word processor with robust formatting, style options, and cross-platform availability, ideal for both memos and complex book publishing.

Sophisticated text editor for code with sleek interface, multi-select tabs, side-by-side definitions, and swift variable renaming using multiple selections.

Privacy-focused browser with over 500 settings for enhanced security and performance, independent of Firefox, and not affiliated with Mozilla.

Federated and open-source social network with no ads, 500-character limit, custom emojis, and content warnings, emphasizing privacy and personal interaction.

Free and open-source tool for screen capture and recording; enables file uploads, annotation, dark mode, 4K support, and customizable themes.

Open-source media player supporting Linux to iOS, highly customizable with plug-ins, supports 4K and diverse formats, privacy-centric and ad-free.