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GitHub stats

Active projects

Currently I'm actively working on the following projects.

Project Further actions Features & Maintenance
DeviceMarketingNames Features & Maintenance
device_marketing_names Features & Maintenance
device_identifiers Features & Maintenance
on_upgrade Features & Maintenance

Other self-created repositories may exist on this account and may be picked up later again, but until further notice all not mentioned repositories are currently on hold.

Forked projects 🔀

During my development I use numerous awesome libraries and tools out there and if I find stuff that's not working or if I have ideas to optimize things I submit those as PRs. I helped with the following libraries / frameworks / tools, among others.

Organization projects 🏢

Beside private projects I participate in open source projects supported by my employer.

Project Organization My status Position
deltachat-android Delta Chat Inactive Developer
flutter-deltachat-core OX Software GmbH Inactive Maintainer / lead
ox-coi OX Software GmbH Inactive Maintainer / lead

Used languages and tech 🔧

I'm using different languages and tech to develop my software. I adapt to new solutions and ideas as often as possible, to stay up to date with current developments. Currently I'm using the following tech stacks.

GitHub language stats

  • Desktop + UI: Dart + Flutter
  • Android: Dart + Flutter and Kotlin (Java only for legacy code)
  • Server: Kotlin (Java only for legacy code)
  • Shell / consoles: Bash and Dart
  • Web: Hugo static side generator

I'm currently trying to focus on Dart + Flutter for all UI driven projects and on Kotlin for the server development. Java is only used for legacy code.


  1. on_upgrade Public

    Local upgrade checker plugin for Flutter.

    Dart 1

  2. Marketing device name lookup package for Flutter. Supports Android, iOS and web.

    Dart 3

  3. Marketing device name lookups for Android and iOS.

    Kotlin 1

  4. A simple Hugo theme for documentation and best practices websites.


  5. Dart and Flutter best practices for developers, from developers.


  6. The source for


206 contributions in the last year

Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Mon Wed Fri
Activity overview

Contribution activity

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