Bluefish

What Bluefish is

Bluefish is a free, open-source desktop editor for programmers and web developers writing websites, scripts, and code. It supports more than 30 markup and programming languages and is available for Linux, macOS, and Windows. The editor can open more than 1,000 documents, and its features page reports tests with over 10,000 open simultaneously. Editing tools include regular-expression search and replace, snippets, unlimited undo and redo, and recovery of modified documents after a crash. Code assistance includes folding, bracket and tag highlighting, autocompletion, and automatic tag closing for many languages. Project support lets users work across projects and restores settings for each one. Bluefish can load and save remote files through FTP, SFTP, HTTP, HTTPS, WebDAV, and CIFS via gvfs. Users can also integrate external programs or run custom scripts. The project is volunteer-run and released under the GNU GPL. One packaging limitation applies to the official Flatpak: strict security settings prevent integration with system tools such as make, pylint, weblint, and the web browser, although internal functionality works as expected.