Bart Kozal

@_bkzl

Amsterdam, The Netherlands
bkzl.co
Joined December 2011
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  1. Pinned Tweet
    Sep 23

    Checkers for iMessage, the app with over 150 000 unique downloads that I made 2 years ago for the release of iOS10 is open source now under the GNU GPL-3.0 license. GitHub: Indie Hackers: App Store:

    5 likes
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  2. Sep 20

    I plan to start working again on Coypu in October. The first step will be the migration of existing code base to TypeScript and React. We keep the project open source and free.

    1 reply 5 likes
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  3. Sep 20

    I have been working on another side project (for gamers) for several weeks. It's going to be public soon™. I'm pretty happy about it.

    3 likes
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  4. Sep 20

    Checkers for iMessage (over 150k+ users in the App Store) will be open sourced on Sunday, and I don't plan any further releases.

    3 likes
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  5. Sep 20

    I plan major releases for vue-float-label and vue-fraction-grid. They will be mostly about optimizing production bundles and fixing compatibility issues with the latest Vue.js version. No further plans.

    1 like
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  6. Sep 20

    Echotags will get a maintenance update to fix iOS12 and iPhone X issues.

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  7. Sep 20

    Jottings and Hocus-Pocus are definitely done for me. I have no plans to do anything regarding them (code is already open sourced).

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  8. Sep 20

    👋 I have some updates regarding my (and ) open source and side projects.

    1 reply 3 likes
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  9. Retweeted
    Sep 3

    Coypu is a text-editor-like weekly planner for macOS, Windows & Linux by and 🙌 -

    7 retweets 23 likes
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  10. Retweeted
    Aug 2

    EclecticIQ is looking for senior UI engineers (React) in Amsterdam: People like to work here:

    9 retweets 12 likes
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  11. Retweeted
    Jul 11

    Hi, I'm Jeff and I'm an Engineering Manager at and I'd like to talk a little bit about open source, humans, and general empathy

    34 replies 798 retweets 1,678 likes
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  12. Retweeted
    Jul 1

    I miss the useless web. I miss your grandpa’s blog. I miss weird web art projects that trolled me. I miss fan pages for things like hippos. I wish I didn’t feel like the web was collapsing into just a few sites plus a thousand resumes.

    357 replies 2,617 retweets 13,009 likes
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  13. Retweeted
    Jun 14

    I wrote an article about redesigning the feedback form at

    2 retweets 3 likes
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  14. Jun 12

    razzle + react-loadable + typescript is really neat 🤩

    1 reply 3 likes
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  15. Retweeted
    May 29

    It's my birthday! 🎊 Today marks 5 years since React was open sourced. 🎂 Feeling grateful to have had a chance to help change UI development.

    182 replies 2,798 retweets 9,667 likes
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  16. May 18

    Toolbar button for Safari to open videos in the Picture-in-Picture mode on any website.

    3 likes
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  17. May 17

    I made this simple, open source app to practice major scales: . Maybe someone else find it useful too! :)

    4 likes
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  18. Apr 21

    Open sourcing some of my old projects: - - -

    3 likes
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  19. Retweeted
    Mar 1

    We just posted our 5400-line Player class (C#) from Celeste in all its messy, mostly-undocumented glory. This is the code that handles Player input/movement/states. Maybe it'll interest you if you're curious how some part of that works!

    128 replies 1,115 retweets 3,070 likes
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  20. Mar 4

    Responsive loading placeholders

    4 likes
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