CudaText is a code editor with a simple, tabbed interface and side-panels. Includes split view, code folding, hotkeys, theme support, color picker and more. The program supports 190+ syntaxes and add-ons written in Python, as well as some IDE features if plugins are used.
The program is cross-platform with clients available for Mac and Linux. Note that settings are modified via text config files (JSON format) in place of options dialogs.