KillerNotes

KillerNotes is a notepad for people who keep working notes: client details, half-finished scripts, the command that fixed it last time. Instead of eighty Notepad tabs and a folder of stray .txt files, everything lives in one searchable database that opens instantly.

Notes are rich text with inline images and real tables, not markdown you have to preview. Full-text search covers every note as you type, and notes organize into tags and nested groups rather than one flat list.

The entire database is encrypted with SQLCipher AES-256, not individual notes bolted on top, so nothing readable is sitting on disk. Password protection for the whole database is optional, so it stays out of your way if you do not need it.

Any note tears off as a shareable .knote file, which is the whole note including its images and formatting in one file you can send someone.

Ships as a single signed portable executable. No installer, no runtime to chase, no account, no sync service, no subscription, and no telemetry of any kind. Nothing leaves your machine. Free and open source under GPLv3. Ten interface languages.