guyoung/CaptfEncoder

Health v2 · maintenance only

Adoption not part of the score

1294 stars · 193 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

CaptfEncoder is an open-source, cross-platform network security tool suite offering encoding/decoding conversions, classical and modern cryptography, asymmetric encryption, and miscellaneous utilities, with aggregated online tools. Version 3 is built in Rust with script extension support and ships as a desktop GUI application.

Use cases

• decode base64 strings from a CTF challenge
• encode text to hex, morse code, or brainfuck
• encrypt and decrypt classical ciphers like Caesar or Playfair
• compute hashes and work with asymmetric encryption
• convert between ascii, unicode, url, and html entity encodings
• extend the toolkit with custom scripts
• solve capture-the-flag crypto puzzles offline

When to choose

• you need a CyberChef-like offline GUI toolkit for CTF crypto and encoding tasks
• you want one cross-platform app covering many classical ciphers and encodings
• you prefer a native desktop tool with script extensibility

When to avoid

• you need a CLI or scriptable pipeline tool rather than a GUI
• you require modern TLS-grade cryptographic operations for production security
• you need actively maintained software with frequent updates

Facets

application · maturity maintenance

security cryptography serialization developer-tools gui security developer-tools cross-platform windows cross-platform ctf encoder decoder classical-ciphers cybersecurity toolkit electron rust cryptography linux macos desktop

Member repositories

For agents

markdown · JSON · MCP: product_card(name="guyoung/CaptfEncoder")