skalibs is a package centralizing the free software / open source C development files used for building all software at skarnet.org: it contains essentially general-purpose libraries. You will need to install skalibs if you plan to build skarnet.org software. The point is that you won't have to download and compile big libraries, and care about portability issues, every time you need to build a package: do it only once.

This is the GNU Objective-C compiler, which compiles Objective-C on platforms supported by the gcc compiler.

uWSGI presents a complete stack for networked/clustered web applications, implementing message/object passing, caching, RPC and process management. It is designed to be fully modular. This means that different plugins can be used in order to add compatibility with tons of different technology on top of the same core.

This package contains the OpenCV (Open Computer Vision) deep neural network module.

TileDB allows you to store and access very large multi-dimensional array data, the data currency of Data Science.

This package contains the OpenCV (Open Computer Vision) Feature Detection and Descriptor Extraction runtime libraries.