OSS Discovery

JP
Japan
OPERATING SYSTEMS & VIRTUALIZATION
CLOUD-READY
ACTIVELY MAINTAINED
FREE
CotEditor

COTEDITOR

CotEditor is a premium, open-source text editor. It provides syntax highlighting, auto-completion, and integrates with various tools. Built with Swift, CotEditor supports macOS, targets developers, writers, and researchers. It offers flexibility, customization, and seamless user experience, focusing on stability, security, and performance, utilizing Cocoa, SwiftUI, and more.

GITHUB STARS
7.9k
+12% this month
FORKS
485
Active community
LAST PUSH
Apr 24, 2026
High momentum
WATCHERS
120
Tracking updates
LICENSE
Other
Commercial use
CotEditor is a premium, open-source text editor. It provides syntax highlighting, auto-completion, and integrates with various tools. Built with Swift, CotEditor supports macOS, targets developers, writers, and researchers. It offers flexibility, customization, and seamless user experience, focusing on stability, security, and performance, utilizing Cocoa, SwiftUI, and more.

High Performance

Built for speed and minimal overhead.

Self-hostable

Docker, Kubernetes, or bare metal

Developer Native

Programmable via any language workflow

SUPPORTED LANGUAGES

Swift
Swift
HTML
HTML
Tree-sitter Query
Tree-sitter Query
Python
Python
CSS
CSS
JavaScript
JavaScript
TypeScript
TypeScript
PHP
PHP
C#
C#
Ruby
Ruby
Shell
Shell
Go
Go
Makefile
Makefile
TeX
TeX
Rust
Rust
Kotlin
Kotlin
C++
C++
Java
Java
Lua
Lua
PLpgSQL
PLpgSQL
Scala
Scala
C
C

VISUAL INTERFACE

Screenshot 1
Screenshot 2
Screenshot 3

The Quick Glance

Status
Active
Category
Operating Systems & Virtualization
Pricing
Free
Self-Hosted
No
Available on
iOS
Latest Release
7.0.0
Apr 19, 2026

Relative Standing — across 1,284 tools

STARS7.9k
Top 39% globally
FORKS485
Top 49% in Open Source
ACTIVITYHigh
Top 47% Activity
WATCHERS120
Top 30% Community