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Armin Ronacher on GitHub

Armin Ronacher

@mitsuhiko

Software developer and Open Source nut. Creator of the Flask framework. Founder of @earendil-works. Other things of interest: @pallets and @getsentry

  • Earendil
  • Austria
  • 23K
    Total stars
  • 26K
    Followers
  • 201
    Public repos
  • 11K
    Contributions

24 following

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Profile tree

  • Contributions: 10,649. Past 12 months.
  • Followers: 25,718. People who follow you.
  • Total stars: 22,924. Across all repos.
  • Following: 24. People you follow.
  • Public repos: 201. Owned, non-fork.

A living snapshot

Every leaf is a headline number from Armin Ronacher’s public GitHub. The canopy fills out as the work grows - sway and all.

  • 11K Contributions Past 12 months
  • 26K Followers People who follow you
  • 23K Total stars Across all repos
  • 24 Following People you follow
  • 201 Public repos Owned, non-fork

Data from GitHub API · refreshed in real time

10,649
Contributions
Past 12 months
252
Current streak
Nov 30, 2025 – Aug 8, 2026
252
Longest streak
Nov 30, 2025 – Aug 8, 2026
Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Mon Wed Fri
Less More

Language distribution for mitsuhiko Rust 47.5%, Go 19.0%, TypeScript 12.6%, JavaScript 7.7%, Python 7.4%, Shell 1.8%, Other 3.9%
  • Rust 47.5%
  • Go 19.0%
  • TypeScript 12.6%
  • JavaScript 7.7%
  • Python 7.4%
  • Shell 1.8%
  • Other 3.9%

Frontend Backend Mobile DevOps Data AI Security Embedded Game Dev
  • Backend 100
  • Data 59
  • Frontend 41
  • DevOps 35
  • Embedded 5
  • Mobile 0
  • AI 0
  • Security 0
  • Game Dev 0

Longest streak
252d
Nov 2025
Favourite coding day
Tuesday
1,125 contributions
Most active year
2026
4,544 contributions
Signature language
Rust
47% of tracked code
Flagship repository
insta
2,943 stars
On GitHub since
2008
18 years and counting

Armin Ronacher maintains a public GitHub presence built primarily around Rust, which accounts for roughly 47% of their committed code, alongside Go and TypeScript. The profile lists 201 public repositories that have attracted 22,924 stars, led by insta at 2,943. Over the past year they recorded 10,649 contributions, including a longest run of 252 consecutive active days. Armin Ronacher has been on GitHub since 2008 and is followed by 25,718 developers.

This overview is generated from Armin Ronacher’s public GitHub activity at the time of the last refresh. Figures cover public repositories and the trailing twelve months of contributions.

insta

A snapshot testing library for rust

  • snapshot-tests
  • rust
  • vscode-extension
Rust 2,943 ★ 154 forks 56 issues yesterday
Apache-2.0 Live demo GitHub
agent-stuff

These are commands I use with agents, mostly Claude

TypeScript 2,819 ★ 212 forks 7 issues yesterday
Apache-2.0 GitHub
minijinja

MiniJinja is a powerful but minimal dependency template engine for Rust compatible with Jinja/Jinja2

  • jinja2
  • templates
  • rust
  • jinja
Rust 2,726 ★ 161 forks 23 issues yesterday
Apache-2.0 Live demo GitHub
pipsi

pip script installer

Python 1,994 ★ 135 forks 54 issues 5d ago
NOASSERTION GitHub
similar

A high level diffing library for rust based on diffs

  • diff
  • unified-diff
  • patch
  • rust
Rust 1,310 ★ 53 forks 5 issues yesterday
Apache-2.0 Live demo GitHub
pluginbase

A simple but flexible plugin system for Python.

Python 1,139 ★ 141 forks 4 issues 7d ago
NOASSERTION GitHub
self-replace

Utility library that helps to implement processes that replace themselves

Rust 825 ★ 32 forks 5 issues 7d ago
Apache-2.0 GitHub
systemfd

Development helper utility for helping with auto reloading for projects supporting systemd socket activation

Rust 656 ★ 18 forks 3 issues 10d ago
Apache-2.0 GitHub

flask

The Python micro framework for building web applications.

Python 72,181 ★ 16,932 forks
pi

AI agent toolkit: unified LLM API, agent loop, TUI, coding agent CLI

TypeScript 85,682 ★ 10,638 forks
minijinja

MiniJinja is a powerful but minimal dependency template engine for Rust compatible with Jinja/Jinja2

Rust 2,726 ★ 161 forks
jinja

A very fast and expressive template engine.

Python 11,726 ★ 1,791 forks
click

Python composable command line interface toolkit

Python 17,616 ★ 1,916 forks
agent-stuff

These are commands I use with agents, mostly Claude

TypeScript 2,819 ★ 212 forks

  • insta 2,943 ★

    A snapshot testing library for rust

  • agent-stuff 2,819 ★

    These are commands I use with agents, mostly Claude

  • minijinja 2,726 ★

    MiniJinja is a powerful but minimal dependency template engine for Rust compatible with Jinja/Jinja2

  • pipsi 1,994 ★

    pip script installer

  • similar 1,310 ★

    A high level diffing library for rust based on diffs

  • pluginbase 1,139 ★

    A simple but flexible plugin system for Python.

All repositories →

Technology breakdown

Derived from repository languages and topics - horizontal bars, never a pie.

Languages

  • Rust 47%
  • Go 19%
  • TypeScript 13%
  • JavaScript 8%
  • Python 7%
  • Shell 2%

Tools

  • Vscode Extension 100%

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Contact
Experience
Education

201
Public repos
Owned, non-fork
23K
Total stars
Across all repos
11K
Contributions
Past 12 months
188
Pull requests
Opened this year
272
Public gists
Snippets shared
18 y
Account age
Since 2008
100 %
Profile score
Completeness

Repository explorer

→

Name Language Stars Forks Size Updated

Coding statistics

→
Largest repository
11.0 MB
insta
Smallest repository
3 KB
python-regex-scanner
Oldest repository
Apr 26, 2010
classy
Newest repository
May 9, 2026
pi-llamacpp
Most starred
2,943 ★
insta
Most forked
212 forks
agent-stuff
Most watched
42 watchers
pipsi
Longest description
108 characters
systemfd
Most open issues
56 open
insta

Contribution patterns

→

By year

  • 2026
    4,544
  • 2025
    4,245
  • 2024
    3,091
  • 2023
    3,738
  • 2022
    1,818
  • 2021
    1,164

By day of week

  • Sun
    858
  • Mon
    1,082
  • Tue
    1,125
  • Wed
    984
  • Thu
    1,029
  • Fri
    919
  • Sat
    717

Best coding day: Tue

By month (last 12)

  • Sep
    449
  • Oct
    547
  • Nov
    347
  • Dec
    662
  • Jan
    980
  • Feb
    578
  • Mar
    635
  • Apr
    564
  • May
    454
  • Jun
    384
  • Jul
    675
  • Aug
    274

GitHub journey

→
  1. April 2008

    Joined GitHub

    Created the @mitsuhiko account.

  2. April 2010

    Created first repository

    Published classy, the oldest repository still on the account.

  3. April 2010

    First starred repository

    classy is the earliest-created repository to have earned stars.

  4. February 2012

    Reached 10 repositories

    python-modernize was the 10th public repository created.

  5. May 2026

    Latest repository

    pi-llamacpp is the most recently created repository.

  6. June 2026

    Most productive year: 2026

    4,544 contributions recorded in 2026, more than any other year on record.

Developer evolution

Your GitHub career, year by year.

 →
2010

Started with Python.

Python Vim Script
Repos this year
6
Total repos
6
Stars, as of today
1.9k
flask-oauth
2011

Went deeper into Python.

Python
Repos this year
3
Total repos
9
Stars, as of today
2.5k
flask-pastebin
2012

Went deeper into Python.

Python
Repos this year
1
Total repos
10
Stars, as of today
3.0k
python-modernize
2013

Shifted from Python to JavaScript.

JavaScript
Repos this year
1
Total repos
11
Stars, as of today
3.2k
timesched
2014

Shifted from JavaScript to Python.

Python
Repos this year
5
Total repos
16
Stars, as of today
7.2k
pipsi
2015

Went deeper into Python.

Python
Repos this year
2
Total repos
18
Stars, as of today
7.8k
platter
2017

Went deeper into Python.

Python
Repos this year
1
Total repos
19
Stars, as of today
8.0k
snaek
2018

Shifted from Python to Rust.

Rust
Repos this year
4
Total repos
23
Stars, as of today
9.2k
systemfd
2019

Went deeper into Rust.

Rust
Repos this year
2
Total repos
25
Stars, as of today
13k
insta
2020

Shifted from Rust to Go.

Go Rust
Repos this year
2
Total repos
27
Stars, as of today
13k
idasen-control
2021

Shifted from Go to Rust.

Rust
Repos this year
4
Total repos
31
Stars, as of today
18k
Contributions
1,164
minijinja
2022

Shifted from Rust to CSS.

CSS Rust
Repos this year
2
Total repos
33
Stars, as of today
19k
Contributions
1,818
teetty
2023

Shifted from CSS to Rust.

Rust
Repos this year
1
Total repos
34
Stars, as of today
19k
Contributions
3,738
self-replace
2025

Shifted from Rust to Go.

Go TypeScript
Repos this year
4
Total repos
38
Stars, as of today
23k
Contributions
4,245
agent-stuff
2026

Shifted from Go to TypeScript.

TypeScript
Repos this year
2
Total repos
40
Stars, as of today
23k
Contributions
4,544
pi-ds4

Built from mitsuhiko’s public, non-fork repositories. Star totals reflect current counts, not historical snapshots.

Achievements

7 / 9 unlocked

Explorer
Created repositories in 8 or more languages
Builder
More than 50 public repositories
Open Source Enthusiast
100+ stars received across all repositories
Consistent
A 100-day-or-longer contribution streak
Documentation Hero
5 or more repositories with a detailed description
Popular
500 or more followers
Prolific Committer
1,000 or more commits in the past 12 months
Long Timer
5 or more years on GitHub
Star Collector
Starred 100 or more repositories

Open source activity

22,924
Stars received
145
Repositories starred
1,987
Forks received
71
Issues opened
Past 12 months
188
Pull requests opened
Past 12 months
26
Reviews given
Past 12 months
272
Public gists

Language evolution

The primary languages of repositories created each year.

2010
  • Python
  • Vim Script
2011
  • Python
2012
  • Python
2013
  • JavaScript
2014
  • Python
2015
  • Python
2017
  • Python
2018
  • Rust
2019
  • Rust
2020
  • Go
  • Rust
2021
  • Rust
2022
  • CSS
  • Rust
2023
  • Rust
2025
  • Go
  • TypeScript
2026
  • TypeScript

Repository growth

Repositories created per year, and the running total.

6 repositories created in 2010 3 repositories created in 2011 1 repositories created in 2012 1 repositories created in 2013 5 repositories created in 2014 2 repositories created in 2015 1 repositories created in 2017 4 repositories created in 2018 2 repositories created in 2019 2 repositories created in 2020 4 repositories created in 2021 2 repositories created in 2022 1 repositories created in 2023 4 repositories created in 2025 2 repositories created in 2026 6 total repositories by end of 2010 9 total repositories by end of 2011 10 total repositories by end of 2012 11 total repositories by end of 2013 16 total repositories by end of 2014 18 total repositories by end of 2015 19 total repositories by end of 2017 23 total repositories by end of 2018 25 total repositories by end of 2019 27 total repositories by end of 2020 31 total repositories by end of 2021 33 total repositories by end of 2022 34 total repositories by end of 2023 38 total repositories by end of 2025 40 total repositories by end of 2026 2010 2011 2012 2013 2014 2015 2017 2018 2019 2020 2021 2022 2023 2025 2026 40 0
Created that year Cumulative total

Language tree

Built automatically from repository languages and topics.

Programming Languages →
  • Rust
  • Go
  • TypeScript
  • JavaScript
  • Python
  • Shell
Tooling →
  • Vscode Extension 1