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Alexandre Mutel

@xoofx@mastodon.social

mastodon 4.7.0-beta.1

VP of Engineering at DataGalaxy, C#/.NET, OSS, lang/compilers, GPU/sound, performance/SIMD/HPC, architecture 🏎️
Microsoft MVP, ex-demoscene PC/Amiga, ex-Unity 🎆
Veggie 🌿, opinions are my own

Supporting freedom for 🇺🇦 and 🇵🇸

He/him/his

0 Followers

0 Following

8 Posts

Joined October 29, 2022

Website:

https://xoofx.github.io

GitHub:

https://github.com/xoofx/

Location:

France , near Grenoble

Posts

Alexandre Mutel @xoofx@mastodon.social · Apr 16, 2026

Replying to @simoncropp@hachyderm.io

@simoncropp@hachyderm.io Congrats, well deserved!

Alexandre Mutel @xoofx@mastodon.social · Mar 18, 2026

Replying to @neilhenning@mastodon.gamedev.place

@neilhenning@mastodon.gamedev.place Good read! We should try to have a chat over video at some point?!

Alexandre Mutel @xoofx@mastodon.social · Mar 14, 2026

Replying to @soltes@mastodon.social

@soltes@mastodon.social I'm using also mainly VS Code + Codex, but even there, the experience is really poor. GitHub copilot for example has a better handling of the overall experience (tooling output, sub-agents...etc.), it can use cheaper models for some discovery phase...etc. Codex is brute force, it fills your context, but it calls a bunch of tools, it does not provide lots of update (when it search for files...etc.). It depends on the model (Codex 5.3 was better than 5.2, 5.4 is in between maybe...)

Alexandre Mutel @xoofx@mastodon.social · Mar 14, 2026

Replying to @wolfpld@mastodon.gamedev.place

@wolfpld@mastodon.gamedev.place yeah, the squad I was referring is https://github.com/bradygaster/squad

Alexandre Mutel @xoofx@mastodon.social · Mar 14, 2026

What's your favorite AI Coding agent CLI/GUI that can use Codex / Copilot subscriptions?

* Codex is pretty bad from my experience
* Copilot is quite better
* OpenCode I haven't tried recently but I have heard good things.
* Squad, quite good, from a multi-agent perspective, used at work, haven't setup it at home

Any others that you would recommend?

Alexandre Mutel @xoofx@mastodon.social · Mar 04, 2026

Another old project of mine, Tomlyn, just got a major refresh with the 1.0 release: https://xoofx.github.io/Tomlyn/ - a solid, modern foundation for working with TOML in .NET.

Coding agents made it possible to reach this level of polish in my spare time. It's also pretty liberating to ship it, feel the accomplishment, and move on.

#dotnet

xoofx.github.io

Tomlyn

Tomlyn High-performance TOML 1.1 for .NET: lexer/parser, roundtrippable syntax tree, and a System.Text.Json-style object serializer. Get started Serialization Low-level APIs GitHub dotnet add package

Alexandre Mutel @xoofx@mastodon.social · Feb 09, 2026

Heya! 🥳 I just released XenoAtom.Logging https://github.com/XenoAtom/XenoAtom.Logging a performance-first structured logging runtime for .NET focused on zero allocations on the hot path! 🚀

Bonus: it integrates nicely with XenoAtom.Terminal.UI: https://xenoatom.github.io/terminal/docs/logging/ ✨

#dotnet

GitHub

GitHub - XenoAtom/XenoAtom.Logging: Zero-alloc structured logging for .NET - fast formatters, rich t

Zero-alloc structured logging for .NET - fast formatters, rich terminal visuals, production-ready file & JSON sinks. - XenoAtom/XenoAtom.Logging

Alexandre Mutel @xoofx@mastodon.social · Nov 06, 2025

Replying to @daniel_collin@mastodon.gamedev.place

@daniel_collin@mastodon.gamedev.place Arnaud should come to the Fedi!

Alexandre Mutel

Posts

Tomlyn

GitHub - XenoAtom/XenoAtom.Logging: Zero-alloc structured logging for .NET - fast formatters, rich t

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