SWI-Prolog won 2025 Alain Comerauer Prize

I was completely surprised to hear that the Alain Comerauer Price was presented to me for SWI-Prolog. It is a great honour. I have acknowledged all contributors I could think of in the short period I had to prepare my speech. Thank you all, contributors as well as users!

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Thrilled for you, Jan! You truly earned this prize. Keep inspiring us!

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Amazing and well-deserved Jan! Congratulations :smiling_face:

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That’s amazing !
Congratulation @jan and thank you for your work on SWI-Prolog!

Well deserved. Congrats!

Big congratulations Jan, very well deserved!

Congratulations Jan, very well deserved :clinking_beer_mugs:

Congratulations Jan!!!

As an occasional contributor: Congratulations! …
Working with @jan to add or update some functionalities – which involved digging into the guts of SWI-Prolog – has been one of the most pleasant experiences in my programming life … @jan has been amazingly patient, responsive, helpful. (Also, I’ve been pleasantly surprised by almost every design decision I’ve seen; I can’t say that for a lot of code I’ve worked on over the years.)

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Wow, congrats Jan!

Congratulations on the award, and thank you for always being there with advice and support.

Very well deserved, due to constant, expert, understanding support, development and advise. Congrats! And please keep it going.

Congratulations! Well deserved!

Besides my own, congratulations also on behalf of GPT5 which thanks to SWI-Prolog’s web presence is now a great Prolog co-worker!

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Nice one ! Well done Jan, well deserved.

Congrats! Well deserved.

Congratulations Jan! Very well deserved. Thank you for your hard work!

I have a problem with the title: SWI-Prolog didn’t win, you did Jan. Too modest.

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Without a lot of involvement of users and contributors SWI-Prolog would never have got popular and I would not have won anything. Besides making a system, no matter how beautiful, without users is (to me) no fun.

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