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A free shared teaching and collaboration canvas with video, screen sharing, and equation tools.

Teach with an infinite, persistent whiteboard integrated into a virtual classroom.

Solve and inspect mathematical expressions

Algebra and calculus through dedicated solvers

Plot equations and coordinate data in two or three dimensions

Equations explored through graphs and symbolic methods

Use a Vim-based editor with Lua configuration, a documented API, and remote-procedure-call support for extensions.

A free Windows programmer’s editor with project workspaces, macros, FTP, HTML preview and a hex editor.

A compact programmer's editor with both graphical and terminal interfaces and Lua-based customization.

Maintain linked wiki pages in a local, plain-text notebook.

A Java-based programmer’s editor with syntax modes, split views and an in-editor plugin manager.

Edit a project across Windows, macOS, Linux, or the browser, with an extensible editor and integrated tools.

Edit source files with a lightweight cross-platform editor and optional Python add-ons.

A browser-based shared math canvas for handwriting, graphs, sliders, and PDF assignments.

Draft and model products with a choice of parametric, associative or history-free tools

A native macOS code editor with project tools, Git integration, and an extension system under active development.

A freeware icon and cursor editor with library-management support.

A modal, configurable text editor for programming and general text work.

Edit source and configuration files directly in a terminal with a compact, keyboard-driven editor.

A Windows source-code editor with syntax highlighting, tabbed files, and search across documents.

Customize a cross-platform editor with packages, project panes, Git tools, and language-server support.

A Windows source-file editor with syntax highlighting, code folding, portable downloads and text-format tools.

A Windows text and code editor with CSV tools, search, and support for very large files.

A KDE editor for multi-file coding with split views, project navigation, search, and plugins.