Extensible Softwares and Apps

Discover best Extensible softwares, apps and websites.

Filter by Platform

Platforms:

Extensible Applications

Sort:
ThinkComposer

ThinkComposer

Open Source

ThinkComposer is a highly flexible visual modeling tool designed for users to create rich, structured diagrams based on their specific domain knowledge. It facilitates the organization and visualization of complex information through various diagram types and hierarchical structures, enabling deep understanding and effective communication of ideas.

Highly flexible and extensible through plugins
Extensible by Plugins/Extensions
Office & Productivity
TagSpaces

TagSpaces

Freemium

TagSpaces is a versatile, open-source application for organizing digital files across multiple platforms using a flexible tagging system. It allows users to manage documents, notes, photos, and more directly on their local storage or synced cloud drives, enhancing discoverability without relying on central databases or proprietary formats. Ideal for individuals seeking robust offline file management and knowledge organization.

Database-free and portable organization via file tagging.
Support for Batch Mode
Development File Management News & Books Office & Productivity
MobaXterm

MobaXterm

Freemium

MobaXterm is a versatile, portable terminal for Windows, packing an enhanced X server and a suite of network tools like SSH, RDP, VNC, and Telnet into a single executable. It offers a tabbed interface and includes built-in Unix commands, file transfer capabilities, and session management.

All-in-one tool reducing need for multiple applications.
Windows Explorer integration
Network & Admin OS & Utilities
Scratch

Scratch

Open Source

Scratch is a powerful yet lightweight text editor designed for developers and anyone working with code or plain text. It offers automatic saving, syntax highlighting, and a range of features to boost productivity, all within a customizable and extensible interface.

Automatic saving significantly reduces risk of data loss.
Extensible by Plugins/Extensions
Development
Notepad++

Notepad++

Open Source

Notepad++ is a widely-used free and open-source text and source code editor for Windows. Built on the Scintilla editing component, it offers a rich set of features for programmers, including syntax highlighting for multiple languages, code folding, macro recording, and a tabbed interface for managing multiple files efficiently. Its lightweight design ensures fast performance even with large files.

Free and Open Source
Color coding
Development
Nomacs

Nomacs

Open Source

Nomacs is a fast and lightweight free, open-source image viewer offering a wide array of features for diverse image formats, including RAW and PSD. It provides essential editing tools, batch processing capabilities, and extensibility via plugins, making it more than just a simple viewer.

Excellent support for numerous image formats, including RAW and PSD.
Batch processing
Photos & Graphics
Redmine

Redmine

Open Source

Redmine is a robust and flexible open-source project management web application designed to help teams manage projects, track issues, and collaborate effectively. It offers a wide range of features, including multi-project support, Gantt charts, time tracking, and extensive customization options through plugins and themes.

Open-source and free with no licensing costs.
Built-in File Manager
Business & Commerce Development File Management Office & Productivity
Sublime Text

Sublime Text

Freemium

Sublime Text is a sophisticated text editor for code, markup, and prose. It's known for its speed, powerful features, and extensive customization options. With features like multiple cursors, GoTo Anything, and a robust plugin ecosystem, it's a favorite among developers and writers alike for boosting productivity and creating a tailored editing environment.

Exceptional performance and speed
Automatic packaging
Development
Audacious

Audacious

Open Source

Audacious is a highly customizable, lightweight audio player designed for discerning listeners who prioritize sound quality and system resource efficiency. Supporting a vast array of audio formats and extensible via a robust plugin system, it offers a classic, skinnable interface for a personalized listening experience.

Extremely lightweight and resource-efficient.
Integrated codecs
Audio & Music
Radio Tray

Radio Tray

Open Source

Radio Tray is a lightweight and unobtrusive online radio streaming application designed specifically for Linux users. It resides conveniently in the system tray, providing quick access to your favorite internet radio stations without cluttering your desktop. It supports a variety of stream formats and is built with simplicity and efficiency in mind.

Excellent system tray integration.
Extensible by Plugins/Extensions
Audio & Music
Nightingale

Nightingale

Open Source

Nightingale is a highly customizable cross-platform audio player with a focus on extensibility, featuring a beautiful interface, a wide array of supported formats, and tools like media library management, podcast playback, and integrated web browsing.

Highly customizable through extensions and skins.
Extensible by Plugins/Extensions
Audio & Music
MediaPortal

MediaPortal

Open Source

MediaPortal is a versatile, open-source media center software transforming your PC into a complete home theater solution. It enables watching and recording TV, playing videos, music, and DVDs, managing photos, and even accessing online services, all through a user-friendly interface on your TV screen.

Comprehensive TV and recording features.
Extensible by Plugins/Extensions
Audio & Music CD/DVD Tools Online Services Video & Movies
OpenELEC

OpenELEC

Open Source

OpenELEC is a small, fast booting embedded operating system built specifically to turn your computer into a Kodi (XBMC) media center. It focuses on simplicity and minimal configuration for a plug-and-play home theatre experience.

Extremely fast boot times.
Extensible by Plugins/Extensions
Audio & Music Development OS & Utilities Photos & Graphics Video & Movies
Tomahawk

Tomahawk

Open Source

Tomahawk is a free and open-source music player that integrates various music sources, including streaming services, local files, and social networks, into a unified library and playback experience. It allows users to discover, play, and share music seamlessly across platforms.

Seamlessly integrates various music sources into one library.
Extensible by Plugins/Extensions
Audio & Music Social & Communications
MusicBrainz Picard

MusicBrainz Picard

Open Source

MusicBrainz Picard is a leading open-source music tagger that identifies and organizes your digital music collection using acoustic fingerprints and comprehensive metadata from the MusicBrainz database. It offers powerful features like automatic tagging, file renaming, and plugin support to keep your music library clean and accurate.

Highly accurate tagging using acoustic fingerprints and MusicBrainz data.
Automatic Tagging
Audio & Music
MediaCoder

MediaCoder

Freemium

MediaCoder is a versatile, free multimedia transcoding software for Windows. It provides extensive control over conversion parameters, supporting a wide range of audio and video formats with optional hardware acceleration built for experienced users and professionals.

Supports a very wide range of audio and video formats and codecs.
Support for CUDA acceleration
Audio & Music Video & Movies
TextMate

TextMate

Commercial

TextMate is a robust and feature-rich graphical text editor for macOS, specifically designed for developers. It offers syntax highlighting, powerful macros, bundles for extensibility, and a highly customizable interface to streamline coding workflows.

Highly extensible with the Bundle system for language-specific support.
Extensible by Plugins/Extensions
Development
Shutter

Shutter

Open Source

Shutter is a comprehensive screenshot utility specifically designed for Linux systems. It offers robust features for capturing, editing, and sharing screenshots, making it a versatile tool for developers, designers, and everyday users.

Comprehensive capture options including scrolling windows.
Built-in Image editor
Photos & Graphics
Atom

Atom

Open Source

Atom is a highly customizable and extensible open-source text editor developed by GitHub. Built on Electron, it provides a modern, hackable platform for developers, offering robust features like syntax highlighting, Git integration, and a vast ecosystem of packages to enhance productivity and tailor the editing experience to individual needs.

Highly customizable and extensible through a vast package ecosystem.
Customizable
Development
KDevelop

KDevelop

Open Source

KDevelop is a powerful, free, and open-source Integrated Development Environment (IDE) designed for Unix-like systems, Windows, and macOS. It offers a robust set of features for a wide range of programming languages, including C++, Python, PHP, and more, making it a versatile tool for software developers.

Free and Open Source
Extensible by Plugins/Extensions
Development
Thunderbird

Thunderbird

Open Source

Thunderbird is a free, open-source email client developed by the Mozilla Foundation, offering robust features for managing multiple email accounts, integrated chat, and RSS feeds. Known for its extensibility and focus on user privacy and security.

Excellent multi-account management.
Built-in RSS reader
Office & Productivity Social & Communications
Miranda NG

Miranda NG

Open Source

Miranda NG is a highly extensible, multi-protocol instant messaging client for Windows. A successor to the popular Miranda IM, it offers a modular architecture supporting numerous chat networks, allowing users to consolidate their conversations into a single interface. It's designed for resource efficiency and deep customization.

Connects to a wide range of chat networks
Extensible by Plugins/Extensions
Online Services Social & Communications
WeeChat

WeeChat

Open Source

WeeChat is a highly customizable, free and open-source command-line based chat client. Designed for efficiency and portability, it supports multiple protocols including IRC and XMPP, making it a versatile tool for connecting to various networks.

Extremely lightweight and fast performance.
Extensible by Plugins/Extensions
Social & Communications
Form Tools

Form Tools

Open Source

Form Tools is a powerful, open-source PHP/MySQL form data management script designed for developers and businesses. It seamlessly integrates with existing web forms to capture, organize, and manage submissions through a user-friendly interface, offering extensive customization and extensibility.

Integrates with any existing HTML form.
Extensible by Plugins/Extensions
Development
Awesome New Tab Page

Transform your Chrome's New Tab Page into a highly customizable, feature-rich dashboard.

Extremely high level of customization and control over the New Tab Page.
Google Chrome extension
Online Services Web Browsers
Flarum

Flarum

Open Source

Flarum is a modern, open-source forum platform designed for simplicity and speed. It provides an intuitive user interface and a highly extendable architecture, making online discussions engaging and easy to manage.

Modern, clean, and fast user interface.
Extensible by Plugins/Extensions
Development Social & Communications
Nautilus

Nautilus

Open Source

Nautilus, also known as GNOME Files, is the official file manager for the GNOME desktop environment. It provides a user-friendly interface for managing files and folders, offering features like file preview, search, and network drive support.

User-friendly and intuitive interface.
Extensible by Plugins/Extensions
File Management
FBackup

FBackup

Free

FBackup is a free backup software for Windows that can back up your important files and folders to local drives, external drives, network locations, and cloud storage services (via plugins). It offers various backup types, scheduling options, and compression features to secure your data.

Completely free for personal and commercial use.
Extensible by Plugins/Extensions
Backup & Sync
Marlin

Marlin

Open Source

Marlin is a modern, fast, and feature-rich file manager built with GTK3. It offers a sleek user interface with tabbed browsing, dual pane support, and extensibility through plugins, making file management efficient and customizable.

Fast and responsive GTK3 interface.
Dropbox integration
File Management
ProcessWire

ProcessWire

Open Source

ProcessWire is a powerful and flexible open-source CMS and framework for building websites and web applications. Known for its elegant API and developer-friendly architecture, it offers a robust solution for managing content at any scale with emphasis on customization and ease of use.

Highly flexible and customizable content structure.
Extensible by Plugins/Extensions
Business & Commerce Development Photos & Graphics Social & Communications
Showing 1 - 30 of 49 results