Apps similar to Squircle CE include Notepad++, which is free and open source. Other options are Visual Studio Code, Sublime Text, VSCodium and Vim. There's no shortage of Text Editors like Squircle CE, with more than 50 alternatives for Mac, Linux, Windows, Android and the web.
Lightweight multi-platform code editor with hardware-accelerated GUI, customizable minimalist interface, syntax highlighting for 50+ languages, terminal and LSP support, plugin extensibility, unlimited editor splits, persistent project state, and portable, ad-free use.
TextPad is designed to provide the power and functionality to satisfy the most demanding text editing requirements. It can edit files up to the limits of virtual memory, and it will work with the 32-bit and 64-bit editions of Windows 7, Vista, XP, 2000, Server 2003 and 2008.
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A native macOS text editor with syntax highlighting for 50+ languages, Markdown WYSIWYG, JSON/YAML support, regex and Column Mode, custom scripts, batch processing, and optional AI assistance.
Caret is a lightweight-but-powerful programmer's editor running as a Chrome Packaged App. Inspired by Sublime and built on top of the Ace editing component, it offers:
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Caxton is a native Mac workbench for text and data files of any size. Every delimited file opens as text and as a typed grid, edits made in either view show in the other, and saving writes the same file back. Nothing is imported anywhere.
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PlainForge opens, edits, and saves local files with a focus on privacy, control, and productivity. No ads, no tracking, no login, and no internet permission.
Vim-flavoured modal editor with the parts a writer actually needs and a few features vim never had. Single static binary, sub-10 ms startup, soft-wrap by default, Claude Code in the editor, syntax highlighting, hunspell spellcheck, Goyo-style reading mode, persistent registers...
Jollpi is a lightweight, simple, and reliable text editor, built with Python 3, GTK4, and GtkSourceView 5. This version is a modern rewrite of the original 2010 Python 2 + PyGTK Jollpi text editor - now refreshed for modern Linux distributions.
MacVim is a port of the text editor Vim to macOS. MacVim supports multiple windows with tabbed editing and a host of other features such as:
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ad (pronounced A.D.) is an attempt at combining a modal editing interface of likes of vi and kakoune with the approach to extensibility of Plan9's Acme. Inside of ad text is something you can execute as well as edit.
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