OpenZL delivers high compression ratios while preserving high speed, a level of performance that is out of reach for generic compressors.

OpenZL takes a description of your data and builds from it a specialized compressor optimized for your specific format. OpenZL consists of a core library and tools to generate specialized compressors — all compatible with a single universal decompressor. It is designed for engineers that deal with large quantities of specialized datasets (like AI workloads for example) and require high speed for their processing pipelines.

• OpenZL @ GitHub.

Related contents:

• Introducing OpenZL: An Open Source Format-Aware Compression Framework @ Engineering at Meta.

StyleX is the styling system for ambitious user interfaces.

StyleX is a JavaScript library for defining styles for optimized user interfaces.

• StyleX @ GitHub.

Related contents:

• Either Tailwind is CSS-in-JS or StyleX isn’t @ Naman.
• A breakdown of style solutions for 2025 @ Theo - t3.gg's YouTube.

A Persistent Key-Value Store for Flash and RAM Storage

• RocksDB.

Related contents:

• How we replaced Elasticsearch and MongoDB with Rust and RocksDB @ Radar.

Yoga is a cross-platform layout engine which implements Flexbox.

Build flexible layouts on any platform with a highly optimized open source layout engine designed with speed, size, and ease of use in mind.

Yoga @ GitHub.

Making Threads Work in Code.

Unofficial, Reverse-Engineered Node.js/TypeScript client for Meta's Threads. Supports Read and Write. Web UI Included.

Threads API @ GitHub.

Segment Anything Model (SAM): a new AI model from Meta AI that can "cut out" any object, in any image, with a single click.

SAM is a promptable segmentation system with zero-shot generalization to unfamiliar objects and images, without the need for additional training.

Segment Anything @ GitHub

ImageBind One Embedding Space to Bind Them All.

PyTorch implementation and pretrained models for ImageBind. For details, see the paper: ImageBind: One Embedding Space To Bind Them All.

ImageBind learns a joint embedding across six different modalities - images, text, audio, depth, thermal, and IMU data. It enables novel emergent applications ‘out-of-the-box’ including cross-modal retrieval, composing modalities with arithmetic, cross-modal detection and generation.

A large-scale build tool. The successor to Buck. Ready for users ∈ {C++, Python, Rust, Erlang, OCaml}.

Buck2, a large scale, fast, reliable, and extensible build tool developed and used by Meta. Buck2 supports a variety of languages on many platforms.

Buck2 @ GitHub.