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.
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.
Deepnote is a collaborative data science notebook built for teams that is shareable, Jupyter-compatible, and runs in the cloud.
A native macOS text editor built for very large files. Opens, searches, and edits multi-gigabyte logs and CSVs in seconds by indexing files instead of loading them into memory.
United States
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.
Tatastu is the friendly desktop app for building with Claude. It is the visual home for Claude Code and a calmer alternative to editors like Cursor, made for people new to coding or who just want it to feel simple.
United States
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...
Agentic AI coding suite with multiple parallel agents for planning, coding, verifying, and orchestrating complex software tasks.
An AI-powered IDE for data teams that connects directly to your data warehouse to write SQL, Python, and dbt workflows with full schema context.
United States
Netherlands
EU
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.
Sidekick is an agentic CLI-based AI tool inspired by Claude Code, Copilot, Windsurf and Cursor. It's meant to be an open source alternative to these tools, providing a similar experience but with the flexibility of using different LLM providers while keeping the agentic...
Canada
Notepad is a fast and distraction-free online writing space. Capture thoughts, take notes, and share instantly. Perfect for quick ideas, to-do lists, etc.
Norway
