Marcin Krzyzanowski

Marcin Krzyzanowski is an independent developer and software engineer specializing in iOS and macOS tools, widely known for creating essential Swift libraries like CryptoSwift and ObjectivePGP.

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At a Glance

40Tool Views

Warsaw, PolandHeadquarters

2014Est.

1Employee

Focus Areas

AI Coding Assistants

Development Environments

Version Control

Connect

AI Tools by Marcin Krzyzanowski

(1)

Commander

macOS UI for AI Coding Agents

AI Coding Asst.Dev Environments Version Control

Discussions

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Latest News

03/30/2026

Products & Services

CryptoSwift

2014

A growing collection of standard and secure cryptographic algorithms implemented in Swift.

ObjectivePGP

2016

iOS and macOS library for OpenPGP encryption and digital signatures.

Commander

2025

A native macOS app for AI-powered coding with Claude Code and Codex CLI, featuring git workflow and worktree support.

VMDesktop

2024

Linux Virtual Machine launcher for macOS distributed via Gumroad.

Market Position

Independent expert specializing in core developer tools and libraries for the Apple ecosystem, known for high-quality open-source contributions.

Leadership

Founders

Marcin Krzyzanowski

Software engineer specializing in iOS/macOS development. Previous roles at Goodnotes (Senior Software Engineer), Judo (Senior Software Engineer), Topology, PSPDFKit (iOS Developer), SwingDev (Senior Software Engineer), Nibble Apps, and Mailcloud. Recognized for significant contributions to the open-source community.

Executive Team

Marcin Krzyzanowski

Founder & Lead Developer

Extensive career in iOS/macOS development, currently at Goodnotes.

Founding Story

Marcin began his professional presence as an independent developer by contributing to the burgeoning Swift ecosystem, creating libraries to solve fundamental needs like cryptography and encryption for iOS developers.

Business Model

Revenue Model

Mixed model: Many products are free/open-source; others are offered on a 'name a fair price' basis or via Gumroad donations.

Pricing Tiers

Free / Open Source

CryptoSwift, ObjectivePGP (MIT/Commercial), Commander.

VMDesktop

€0+

Available on Gumroad as 'name a fair price'.

Private / Independent

Target Markets

Industries & Segments

Software Developers
iOS Engineers
macOS Developers
Security Researchers

Use Cases

Swift application development
Secure data encryption on Apple platforms
AI-assisted coding workflows
Custom text editors for macOS

Notable Customers

Apple Developer Community
Swift Ecosystem users

Quick Facts

Headquarters

Warsaw, Poland

Founded

2014

Entity Type

Sole Proprietorship

Employees

Total Funding

Self-funded

Office Locations

Warsaw

History & Milestones

2025

Released STTextView and Commander, focusing on modern macOS development and AI-integrated workflows.

2024

Joined Goodnotes as a Senior Software Engineer.

2016

ObjectivePGP became an open-source project.

2014

Started development of CryptoSwift, which became one of the most popular Swift cryptographic libraries.

2011

Finalist of Startup Fest with the Postalcard.mobi project (organized by Agora).

Key Capabilities

Standard and secure cryptographic algorithms in Swift

OpenPGP implementation for iOS/macOS

Native AI-powered coding interface

Extensible text-view components for macOS

Integrations & Partnerships

Platform Integrations

iOS
macOS
Swift Package Manager
CocoaPods
Gumroad
Claude Code
Codex

Key Partnerships

Goodnotes (Employer)

Apple Open Source Community

Connect

Website

krzyzanowskim.com/

GitHub

CommanderApp

X / Twitter

cifilter

AI Topics

Marcin Krzyzanowski focuses on these topics:

AI Coding Assistants(1)

Development Environments(1)

Version Control(1)

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Marcin Krzyzanowski

Marcin Krzyzanowski is an independent developer and software engineer specializing in iOS and macOS tools, widely known for creating essential Swift libraries like CryptoSwift and ObjectivePGP.

Visit Website