MangoWriter Features

Private writing, by design.
MangoWriter is a secure Windows editor that keeps your words protected from the moment you type them—without getting in your way.

Core security

  • Zero plaintext at rest – Content is encrypted before it ever touches storage. No stray temp files.
  • AES-GCM (256-bit) – Modern authenticated encryption safeguards confidentiality and integrity.
  • Strong key derivation – Passwords are hardened with Argon2 + PBKDF2, then cached in secure memory for the session to keep things fast.
  • Optional keyfile (second factor) – Bind documents to your keyfile for defense-in-depth. Visual cues show when a keyfile is loaded.
  • Session Lock – One click masks the screen and requires re-authenticate to continue.
  • Auto-Lock – Automatically locks and masks the screen after inactivity; in-memory keys are cleared. Timeout is configurable.
  • Secure clipboard – Copy/paste without leaving readable traces behind.
  • Redaction – permanently black out selected text.
    • Single-click to redact the current selection
    • Bulk redaction across the document using presets
  • Protected operations – Sensitive actions (e.g., Print, Export to plaintext/zip) prompt for re-authentication.

Local-only by design

  • No network connectivity – MangoWriter doesn’t phone home or make outbound calls.
  • No third-party DLLs – A focused, minimal dependency footprint.
  • No account required – Your files, your keys, your machine.

Focused editing experience

  • Clean, responsive editor – Familiar shortcuts and fast file ops.
  • Clear trust cues – Persistent indicators for encryption mode and keyfile state (e.g., a visible key indicator when loaded).
  • Frictionless performance – Session-cached keys keep encryption out of your way while you write.

File handling that respects ownership

  • Standard files you control – Open, save, and share like any normal document (with your password/keyfile).
  • Secure export options – Export to plaintext when needed, or to an encrypted zip for safer sharing.
  • Keyfile safety checks – Built-in hints/mismatch alerts help prevent “wrong keyfile” surprises.

Command-line arguments

  • Open a document: MangoWriter.exe "<path-to-document.mwe>" — launches MangoWriter and opens the specified file.
  • Optional keyfile (2FA): -k "<path-to-keyfile.mwk>" — supply the keyfile for keyfile-protected documents.
  • Tips: Quote paths that contain spaces. Example:
    MangoWriter.exe "C:\Work\Notes\Passwords.mwe" -k "C:\Keys\Work.mwk"

Who it’s for

  • Professionals handling sensitive drafts and research.
  • Legal, finance, and compliance teams that need local-only protection.
  • Writers who want privacy without complexity.

Under the hood (for the curious)

  • Cipher: AES-GCM-256
  • KDF: Argon2 + PBKDF2 (session-cached in secure memory)
  • Security model: Encryption-first defaults; protected ops require re-authentication; no telemetry or cloud services.

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