go-actor is a Go library implementing the Actor model for concurrent programming. It provides core abstractions: Actor (with Start/Stop), Worker (defining work via DoWork), and Mailbox for message passing. The library enables building concurrent systems without mutexes by leveraging goroutines and channels. Key features include non-blocking message sends (by default), combinable actors for collective lifecycle management, and pluggable mailbox modes (internal queue or Go channel wrapper). The design emphasizes zero-overhead composition, graceful shutdown, and compatibility with Go's scheduler. The codebase is well-tested, actively maintained, and follows modern Go practices with rigorous CI/linting.
Collision is a desktop application for generating and verifying cryptographic hashes of files. Built with Crystal, GTK 4, and libadwaita, it provides a clean GUI interface to calculate MD5, SHA-1, SHA-256, SHA-512, Blake3, CRC32, and Adler32 hashes. The application features concurrent hash calculation using Crystal's fiber system, a Nautilus extension for file manager integration, and proper handling of Flatpak sandboxed environments. It follows a modular architecture with separate concerns for UI, core functionality, and application logic.