Mathijs Vogelzang
@thijser.bsky.social
Tech, Kotlin, Typescript, Startups, Ethereum / Base
Creating things @ appbrain.com / reallywrite.com / bluefacts.app
Creating things @ appbrain.com / reallywrite.com / bluefacts.app
Cool to use duckdb to present, and even more cool stuff coming up for duckdb!
January 27, 2026 at 7:57 PM
Cool to use duckdb to present, and even more cool stuff coming up for duckdb!
I tried 3 different AI models to build a speech-to-markdown app with #svelte. Interesting to see that Gemini and Claude kind of messed up but Cursor did great. www.apptornado.com/blog/buildin...
SpeechDown: Building a speech-to-markdown app with three coding agents
I tested three different LLM coding agents head-to-head on the same task. What I found surprised me.
www.apptornado.com
January 7, 2026 at 11:55 AM
I tried 3 different AI models to build a speech-to-markdown app with #svelte. Interesting to see that Gemini and Claude kind of messed up but Cursor did great. www.apptornado.com/blog/buildin...
Reposted by Mathijs Vogelzang
I am working on a SQL tool ("SQG") for @duckdb.org and #sqlite. SQG can generate typesafe code from SQL queries. Currently for Typescript, Java JDBC and Java @arrow.apache.org API.
We created it while working on @bluefacts.app, I hope others find it useful aswell !
We created it while working on @bluefacts.app, I hope others find it useful aswell !
GitHub - sqg-dev/sqg: Generate typesafe code from SQL queries
Generate typesafe code from SQL queries. Contribute to sqg-dev/sqg development by creating an account on GitHub.
github.com
January 6, 2026 at 2:15 PM
I am working on a SQL tool ("SQG") for @duckdb.org and #sqlite. SQG can generate typesafe code from SQL queries. Currently for Typescript, Java JDBC and Java @arrow.apache.org API.
We created it while working on @bluefacts.app, I hope others find it useful aswell !
We created it while working on @bluefacts.app, I hope others find it useful aswell !
Reposted by Mathijs Vogelzang
I admire the Dutch for many reasons, one of which is that they celebrate the New Year with doughnuts. I’ve taken a leaf out of their book, and so Oliebollen, the doughnuts in question, are #RecipeOfTheDay.
And Happy New Year! www.nigella.com/recipes/new-...
And Happy New Year! www.nigella.com/recipes/new-...
New Year Doughnuts - Oliebollen
You can’t set foot in the Netherlands in the festive period without encountering these Dutch doughnuts, even though it’s on New Year’s Eve that they are most traditionally eaten; indeed, it’s said tha...
www.nigella.com
December 31, 2025 at 12:54 PM
I admire the Dutch for many reasons, one of which is that they celebrate the New Year with doughnuts. I’ve taken a leaf out of their book, and so Oliebollen, the doughnuts in question, are #RecipeOfTheDay.
And Happy New Year! www.nigella.com/recipes/new-...
And Happy New Year! www.nigella.com/recipes/new-...
I performed one mother-of-all-commits in our repo last year 😅 (that means > 1,000 files changed, in this case it was a big restructuring of the folder structure of a part of our codebase)
December 19, 2025 at 1:19 PM
I performed one mother-of-all-commits in our repo last year 😅 (that means > 1,000 files changed, in this case it was a big restructuring of the folder structure of a part of our codebase)
The @atproto.com git repo year in review! Steady stream of commits throughout the year.
@matthieu.bsky.team has the most commits and the top filetypes are .ts, .md and .json files.
Generated with gitrewind.dev
@matthieu.bsky.team has the most commits and the top filetypes are .ts, .md and .json files.
Generated with gitrewind.dev
December 18, 2025 at 7:15 PM
The @atproto.com git repo year in review! Steady stream of commits throughout the year.
@matthieu.bsky.team has the most commits and the top filetypes are .ts, .md and .json files.
Generated with gitrewind.dev
@matthieu.bsky.team has the most commits and the top filetypes are .ts, .md and .json files.
Generated with gitrewind.dev
Fun project I've been working on: see your git repo's year in history -- git rewind!
gitrewind.dev
gitrewind.dev
gitrewind.dev
December 18, 2025 at 4:08 PM
Fun project I've been working on: see your git repo's year in history -- git rewind!
gitrewind.dev
gitrewind.dev
Reposted by Mathijs Vogelzang
The 2025 @adventofcode.bsky.social is right around the corner, and we don't plan to be left out in the cold!
blog.gitbutler.com/advent-of-co...
blog.gitbutler.com/advent-of-co...
Advent of Code!
GitButler is excited to officially participate in this year's Advent of Code! Join our team as we tackle 25 days of clever programming puzzles and showcase how GitButler makes solving daily challenges...
blog.gitbutler.com
November 26, 2025 at 2:52 PM
The 2025 @adventofcode.bsky.social is right around the corner, and we don't plan to be left out in the cold!
blog.gitbutler.com/advent-of-co...
blog.gitbutler.com/advent-of-co...
Reposted by Mathijs Vogelzang
Zohran Mamdani (@zohrankmamdani.bsky.social) is gaining more followers than Bluesky @bsky.app itself! 🤯🚀
The Top 1000 Users with the Most Followers Added in the Last 24 Hours | BlueFacts
View the trending users on Bluesky by total number of followers added in the last 24 hours, updated daily.
bluefacts.app
November 6, 2025 at 10:01 AM
Zohran Mamdani (@zohrankmamdani.bsky.social) is gaining more followers than Bluesky @bsky.app itself! 🤯🚀
Reposted by Mathijs Vogelzang
Serious take: the solution to Safe Browsing false positives like the Immich one is passkeys.
Phishing regularly upends people's lives. The Safe Browsing cat-and-mouse with all its opaque false positives will be necessary until we roll out phishing-resistant auth.
Phishing regularly upends people's lives. The Safe Browsing cat-and-mouse with all its opaque false positives will be necessary until we roll out phishing-resistant auth.
October 23, 2025 at 12:34 PM
Serious take: the solution to Safe Browsing false positives like the Immich one is passkeys.
Phishing regularly upends people's lives. The Safe Browsing cat-and-mouse with all its opaque false positives will be necessary until we roll out phishing-resistant auth.
Phishing regularly upends people's lives. The Safe Browsing cat-and-mouse with all its opaque false positives will be necessary until we roll out phishing-resistant auth.
Reposted by Mathijs Vogelzang
Fun idea:
Use this site to find your account's score and then find a matching review out there on the web for any game of your choosing.
bluefacts.app
For me? It's Pokemon Yellow as reviewed by Gamespot.
Use this site to find your account's score and then find a matching review out there on the web for any game of your choosing.
bluefacts.app
For me? It's Pokemon Yellow as reviewed by Gamespot.
September 25, 2025 at 2:51 AM
Fun idea:
Use this site to find your account's score and then find a matching review out there on the web for any game of your choosing.
bluefacts.app
For me? It's Pokemon Yellow as reviewed by Gamespot.
Use this site to find your account's score and then find a matching review out there on the web for any game of your choosing.
bluefacts.app
For me? It's Pokemon Yellow as reviewed by Gamespot.
Haha, other answers in this thread are also great
August 31, 2025 at 8:34 AM
Haha, other answers in this thread are also great
I created a word cloud of the one liners of the companies in the last few @ycombinator.bsky.social batches. #AI is very strong.
August 21, 2025 at 1:19 PM
I created a word cloud of the one liners of the companies in the last few @ycombinator.bsky.social batches. #AI is very strong.
Reposted by Mathijs Vogelzang
Reposted by Mathijs Vogelzang
The singularity is awesome
June 28, 2025 at 5:19 PM
The singularity is awesome
Reposted by Mathijs Vogelzang
We continued an existing, but somewhat outdated awesome-bluesky list here: github.com/bluefacts-ap...
What are your favorite tools to use with BlueSky?
What are your favorite tools to use with BlueSky?
GitHub - bluefacts-app/awesome-bluesky: An awesome list of tools and resources for BlueSky
An awesome list of tools and resources for BlueSky - bluefacts-app/awesome-bluesky
github.com
June 13, 2025 at 10:46 AM
We continued an existing, but somewhat outdated awesome-bluesky list here: github.com/bluefacts-ap...
What are your favorite tools to use with BlueSky?
What are your favorite tools to use with BlueSky?
Reposted by Mathijs Vogelzang
saw this cool Bluesky user growth dashboard on reddit, apparently the 7-day trend has been red for awhile but it's green at the moment
bluefacts.app/bluesky-user...
bluefacts.app/bluesky-user...
June 9, 2025 at 12:20 PM
saw this cool Bluesky user growth dashboard on reddit, apparently the 7-day trend has been red for awhile but it's green at the moment
bluefacts.app/bluesky-user...
bluefacts.app/bluesky-user...
Reposted by Mathijs Vogelzang
Everyone should try this because it’s pretty cool. @bluefacts.app 🔄
June 6, 2025 at 6:30 PM
Everyone should try this because it’s pretty cool. @bluefacts.app 🔄
Reposted by Mathijs Vogelzang
The Bluesky user growth page finally shows something green!
Daily likes are growing again (last 7days vs 7days before).
Daily likes are growing again (last 7days vs 7days before).
Bluesky User Growth and Active Users
See how activity and usage of Bluesky has been growing over time. How many users are currently active? How many posts are posted daily on Bluesky?
bluefacts.app
June 6, 2025 at 3:33 PM
The Bluesky user growth page finally shows something green!
Daily likes are growing again (last 7days vs 7days before).
Daily likes are growing again (last 7days vs 7days before).
Just updated my Java dataframe test & benchmark. @andrus.adamchik.org contributed an implementation for DFLib, which is now the fastest Java dataframe (not counting @duckdb.org which is much faster, but doesn't give you the dataframe syntax)
github.com/mathijs81/ja...
github.com/mathijs81/ja...
June 5, 2025 at 6:04 PM
Just updated my Java dataframe test & benchmark. @andrus.adamchik.org contributed an implementation for DFLib, which is now the fastest Java dataframe (not counting @duckdb.org which is much faster, but doesn't give you the dataframe syntax)
github.com/mathijs81/ja...
github.com/mathijs81/ja...
Reposted by Mathijs Vogelzang
Scott Pelley—American author and reporter for CBS News for more than 31 years, did not hold back
May 27, 2025 at 3:32 AM
Scott Pelley—American author and reporter for CBS News for more than 31 years, did not hold back
Reposted by Mathijs Vogelzang
BlueFacts is launching on ProductHunt today! www.producthunt.com/posts/bluefa...
We'd love your feedback and upvotes ❤️
#buildinpublic
We'd love your feedback and upvotes ❤️
#buildinpublic
BlueFacts - Bluesky trends and insights | Product Hunt
We built BlueFacts to make Bluesky easier to explore—see who’s trending, what posts are hot, and discover interesting accounts. There’s also a feed builder and profile insights. It’s free and continuo...
www.producthunt.com
May 27, 2025 at 7:10 AM
BlueFacts is launching on ProductHunt today! www.producthunt.com/posts/bluefa...
We'd love your feedback and upvotes ❤️
#buildinpublic
We'd love your feedback and upvotes ❤️
#buildinpublic
Reposted by Mathijs Vogelzang
New: keep track of user and post growth on Bluesky. Currently the volume is declining a little bit, let's get it growing again!
bluefacts.app/bluesky-user...
bluefacts.app/bluesky-user...
May 26, 2025 at 3:43 PM
New: keep track of user and post growth on Bluesky. Currently the volume is declining a little bit, let's get it growing again!
bluefacts.app/bluesky-user...
bluefacts.app/bluesky-user...
Reposted by Mathijs Vogelzang
We've launched our site on Fazier, check it out and give us an upvote if you like 😊
fazier.com/launches/blu...
fazier.com/launches/blu...
BlueFacts - Bluesky Trends and Insights | Fazier
Discover interesting people and trends on Bluesky
fazier.com
May 20, 2025 at 11:45 AM
We've launched our site on Fazier, check it out and give us an upvote if you like 😊
fazier.com/launches/blu...
fazier.com/launches/blu...