Pulsar

Kate is packed with features that will make it easier for you to view and edit all your text files. Kate lets you to edit and view many files at the same time, both in tabs and split views, and comes with a wide variety of plugins, including an embedded terminal that lets you launch console commands directly from Kate, powerful search and replace plugins, and a preview plugin that can show you what your MD, HTML and even SVG will look like. Kate supports highlighting for over 300 languages making it easier to read code in almost all programming languages. Kate also understands how brackets works and will help you navigate inside complex code blocks hierarchies. On-the-fly spellchecking is also included and will help you check your text before publishing. Work on multiple files at the same time with split views. Use the project sidebar to navigate your project directory structures and use Kate's smart tabs to quickly access your recently opened documents.

Quiver is a notebook built for programmers. It lets you easily mix text, code, Markdown and LaTeX within one note, edit code with an awesome code editor, live preview Markdown and LaTeX, and find any note instantly via the full-text search. A note in Quiver is comprised of cells, snippets of text, code, Markdown, LaTeX (via MathJax) or diagrams (sequence diagram, flowchart). You can freely mix different cell types within one note. You can set different languages for different code cells, too. The programmer's notebook should make code editing effortless. Quiver packs the awesome ACE code editor in code cells, with syntax highlighting support for more than 120 languages, over 20 themes, automatic indent and outdent, and much more. Quiver lets you write in Markdown with inline formatting and custom CSS options. A live preview window renders Markdown as you type. Quiver uses MathJax to typeset mathematical equations written in LaTeX.