Zasper is described as 'An IDE with massive concurrency support, exceptional speed, and minimal memory footprint. Perfect for data apps using Jupyter notebooks' and is a Code Editor in the development category. There are more than 50 alternatives to Zasper for a variety of platforms, including Mac, Windows, Linux, BSD and Web-based apps. The best Zasper alternative is Notepad++, which is both free and Open Source. Other great apps like Zasper are Visual Studio Code, Sublime Text, VSCodium and Vim.
Custom task and session manager using Git worktrees to organize parallel workflows, integrates with agent CLIs and TUIs through hooks and scripts, provides live agent status, automated environment setup, VM sandboxing for secure code, and session-aware automation.
KillerShell puts a file browser, a terminal and a text editor in one window, on one tab strip and one set of keys, so you stop alt-tabbing.
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Deepnote is a collaborative data science notebook built for teams that is shareable, Jupyter-compatible, and runs in the cloud.
A native editor for Markdown, notes, and code across macOS, iPhone, and iPad. Minimal by design. Quick edits, fast file access, no IDE bloat.
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...
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