Software · Office & notes

KillerNotes

A searchable, encrypted notepad for techs - rich text, inline images, real tables, full-text search, and tear-off .knote sharing.

Completely free
Windows
Open source
No account

Official website

Ad-supported exit link (Clictune): an intermediate page may show for a few seconds before the official website. Direct link to the website, no intermediate page

Download from the official source

Link to the official download page, ad-supported (Clictune): an intermediate page may show for a few seconds. Direct link to the download

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Geographic availability: No geographic restriction found in our sources; availability is not checked country by country.

Technical details

Pricing: Completely freeconfirmed by GitHub, Winget (Windows Package Manager)
License: GPL-3.0 — Open source (copyleft)confirmed by GitHub, Winget (Windows Package Manager)
Open source: Yes
Commercial use: Yesconfirmed by GitHub, Winget (Windows Package Manager)
Account required: Noconfirmed by GitHub, Winget (Windows Package Manager)
Credit card required: Noconfirmed by GitHub, Winget (Windows Package Manager)
Watermark: Not applicable
Ads: not documented
Platforms: WindowsEstablished by Windows: GitHub, Winget
Publisher: Steve the Killer
Latest version: 1.6.1
Latest activity: 1 November 2026
Source code: github.com/stevethekiller/killernotes

Overview

KillerNotes is a note-taking program, available on Windows.

Features described in its GitHub repository, on its official website and in its Winget manifest: full-text search, data encryption, scheduled tasks and Markdown support.

File formats mentioned: RTF and HTML.

Overview written by LicitPro from the documentation published by the authors and the cited sources; we have not tried the resource ourselves.

Excerpts that establish this information

“Searchable, encrypted notes with rich text, inline images, scheduled backups with safe restore, AES-256 protection, and .knote sharing.” — official website, 10 November 2026
“A searchable, encrypted notepad for techs - rich text, inline images, real tables, full-text search, and tear-off .knote sharing.” — Winget, 10 November 2026
“Searchable, encrypted notes with rich text, inline images, scheduled backups with safe restore, AES-256 protection, and .knote sharing.” — official website, 10 November 2026
“Searchable, encrypted notes with rich text, inline images, scheduled backups with safe restore, AES-256 protection, and .knote sharing.” — official website, 10 November 2026
“Opens and exports .txt, .md, .html, .rtf, and images, with a markdown/HTML preview.” — Winget, 10 November 2026

At a glance

All of KillerNotes is free: no feature is locked behind a paid plan, and its code is open.

Its licence (GPL-3.0) is a copyleft open source licence: you may use, study, modify and redistribute it, including commercially; modified versions must keep the same licence.

Strengths

Open source code
No account needed
Commercial use allowed

Sources and checks

Facts collected from GitHub (credit card, account, source code, publisher, licence, free status, platforms, commercial use) — 8 November 2026
Facts collected from Winget (Windows Package Manager) (credit card, account, source code, publisher, licence, free status, platforms, commercial use, version) — 6 November 2026
Last technical check: 6 November 2026
Description from github.com — Manifeste Winget (MIT)

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