Heynote

heynote.com Code Editors & IDEs Online tool

Organize text in Heynote’s persistent buffer, which divides notes into separate blocks.

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About Heynote

Heynote is a text editor built around a single persistent buffer that is divided into blocks. Each block can hold a separate note, such as a meeting summary, a to-do list, a JSON response from an API, or a message draft. Each block can also have its own language setting, with syntax highlighting and auto-formatting. Math blocks work as calculator scratchpads that support variables, functions and unit conversions, including currencies.

Notes can be spread across multiple buffers, which can be organized into directories, and each buffer corresponds to a file on disk. The homepage lists downloads for Mac, Windows, and Linux (AppImage and Snap). The homepage does not state pricing, and it does not describe sync or cloud features.

Key features

Persistent text buffer divided into blocks, with new blocks created by Cmd-Enter
Per-block language setting with syntax highlighting and auto-format
Math blocks with variables, functions and unit conversions, including currencies
Multiple buffers organized into directories, each corresponding to a file on disk
Inline images pasted or dragged into a buffer, selectable and resizable in the editor
Freehand annotation tool for marking up images, with one-step clipboard update

Best for: People who want to keep notes, code snippets, API responses and quick calculations together in one scratch-style editor.

Good for

Each buffer is stored as a file on disk, so notes are kept in ordinary files
Blocks let separate items, such as a draft or a JSON response, be kept apart within one buffer
Math blocks support variables, functions and unit conversions in addition to basic arithmetic