Hi there, I'm Tokuhiro Matsuno 👋

Kotlin/Rust/Python engineer based in Tokyo, Japan Working at Sakura Internet | Blog: 64p.org

About Me

I've been contributing to open source since 2008, with 925+ repositories and 5,100+ stars across various projects. My main focus has been on Perl ecosystem development, but I also work with Java, Kotlin, Go, Rust, and TypeScript.

Notable Projects

🚀 Most Popular

• plenv ⭐ 531 - Perl version manager (Shell)
• dcv ⭐ 216 - Docker compose versioning tool (Go)
• Amon ⭐ 164 - Lightweight web framework for Perl
• git-xlsx-textconv ⭐ 148 - Excel diff tool for Git (Go)
• java-handbook ⭐ 144 - Java programming handbook

🔨 Perl Ecosystem

• Furl ⭐ 106 - Fast HTTP client
• Minilla ⭐ 98 - CPAN module authoring tool
• Perl-Build ⭐ 84 - Perl installation tool
• SQL-Maker ⭐ 46 - SQL builder
• Test-TCP ⭐ 33 - Testing TCP/HTTP servers

🔧 Tools & Utilities

• obsidian-2hop-links-plugin ⭐ 34 - Obsidian plugin (TypeScript)
• go-hsperfdata ⭐ 25 - JVM performance data parser (Go)
• obsidian-pomodoro-plugin ⭐ 22 - Pomodoro timer for Obsidian

☕ Java/Kotlin Projects

• spring-vue-sample ⭐ 70 - Spring Boot + Vue.js sample
• toydi ⭐ 62 - Lightweight DI container
• avans ⭐ 50 - Web framework
• tinyorm ⭐ 30 - Minimal ORM for Java

Journey Through the Years

2026 (14 repos) - Cloud & Development Tools

Recent work on cloud infrastructure and development tools:

• sakpilot - TypeScript project ⭐ 2
• dbmate-deployer - Database migration deployment tool (Go)

2025 (27 repos) - Modern Web & AI

Exploring modern web technologies and AI integration:

• historylens - History visualization tool (TypeScript) ⭐ 1

2024 (23 repos) - Social & Content Tools

• bsky-to-markdown - Bluesky to Markdown converter (TypeScript) ⭐ 3

2022 (22 repos) - Productivity & Visualization

• mindcheese ⭐ 13 - Editable mindmap library (TypeScript)
• dotfiles ⭐ 4 - Personal development environment configuration

2016-2020 (136 repos) - Java & Kotlin Era

Extensive work on Java and Kotlin projects:

• spring-vue-sample ⭐ 70
• java-handbook ⭐ 144
• toydi ⭐ 62

2009-2015 (444 repos) - Perl Golden Age

Most productive period, building the Perl ecosystem:

• plenv ⭐ 531
• Furl ⭐ 106
• Minilla ⭐ 98
• SQL-Maker ⭐ 46
• Hundreds of CPAN modules

2008 (19 repos) - The Beginning

Started the open source journey on GitHub

Tech Stack

Perl      ████████████████████████████████████████ 436 repos
Java      ██████████ 101 repos
JavaScript ██████ 63 repos
C         ████ 46 repos
Go        ████ 39 repos
Kotlin    ███ 35 repos
TypeScript ██ 18 repos
Python    ██ 17 repos
C++       ██ 22 repos
Rust      █ (emerging)

Stats

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💼 Working at Sakura Internet 📝 Blog: 64p.org 🐦 Twitter: @tokuhirom