---

Welcome to MangoWriter

MangoWriter is a secure, lightweight text editor designed for environments where confidentiality is paramount—whether for governments, secure rooms, or anyone who needs to keep their text protected from unauthorized access.

At its core, MangoWriter provides a simple, intuitive experience, much like your everyday text editor. But don’t let its simplicity fool you. This is a tool built with state-of-the-art encryption and security features that ensure your work remains completely private. We’ve stripped away unnecessary features and distractions, focusing on doing one thing exceptionally well: protecting your text.

Inspired by Antoine de Saint-Exupéry’s philosophy that “perfection is achieved, not when there is nothing more to add, but when there is nothing left to take away,” MangoWriter embodies this belief. Our design philosophy has been to create a clean, efficient tool focused on the essentials, so your data stays safe and your mind stays on your work.

MangoWriter Security Features

• Core crypto
  • AES-GCM (256-bit) for encryption and integrity. If a file is altered, AES-GCM’s authentication fails and MangoWriter won’t open it.
  • Key derivation: password is pre-hashed with Argon2, then strengthened with PBKDF2-HMAC-SHA256 (310,000 iterations).
  • Optional keyfile (2FA): user-generated 128-byte file combined with the password for the encryption key.
• Keys & unlock flow
  • Your password is never written to disk. It’s requested when you open/unlock a document; key material lives only in secure memory while the document is unlocked and is wiped on lock, timeout, or exit.
  • Sensitive buffers are zeroed after use.
• Data handling
  • No plaintext is ever written to disk. MangoWriter uses no caches or temp files; only the encrypted document is saved.
  • Secure clipboard: copied content is bound to the current session and isn’t readable outside MangoWriter.
• Screen Management
  • Screen lock: locking instantly masks document content.
  • Redaction: permanently blacks out redacted text
    • Single-click to redact the current selection
    • Bulk redactions across the document using presets
• Attack surface
  • Offline by design: no network, no telemetry.
  • No third-party DLLs; builds are code-signed (OV) and timestamped.
  • Available as MSI installer or portable ZIP (same signed binaries).
• Secure export
  • Export as password-protected ZIP; re-authentication is required to export.

[Read the full security deep dive ➜]