Here’s a list of some best modern free and open source cross-platform code editors for developers.
Visual Studio Code
Free and open source IDE based on the Electron/Atom Framework. Created by Microsoft.
VS Code combines the streamlined UI of a modern editor with rich code assistance and navigation, and an integrated debugging experience — without the need for a full IDE. It uses the Electron framework based on the Atom shell.
VS Code combines the simplicity of a code editor with what developers need for their core edit-build-debug cycle. It provides comprehensive code editing, navigation, and understanding support along with lightweight debugging, a rich extensibility model, and lightweight integration with existing tools.
VS Code source code on GitHub.
Zed
Zed is a high-performance, multiplayer code editor developed by the creators of Atom and Tree-sitter.
Zed efficiently leverages CPU cores and GPU for instant startup, quick file loading, and responsive keystrokes. Zed maintains a full syntax tree for every buffer, providing precise code highlighting, auto-indent, and structural selection. It speaks the Language Server Protocol for autocompletion, code navigation, diagnostics, and refactorings. With features like Vim mode, integrated terminal, and collaboration channels, Zed empowers developers to code at the speed of thought. Explore it on the Zed GitHub repository. 🚀🔥
For more curated list, visit a showcase of some amazingly awesome open source text editors on GitHub.