Loco is a batteries-included, Rails-inspired web framework for Rust, built on Axum, Sea-ORM, and Tera. It provides a full-stack MVC architecture with built-in authentication (JWT, API tokens, magic links), background job processing (Redis, Postgres, SQLite queues), mailer (SMTP/stub), caching (in-memory, Redis), storage (local, S3, Azure, GCS), cron scheduling, and code generation via CLI. The framework emphasizes convention over configuration and includes an interactive project generator (`loco new`) that scaffolds complete SaaS or API apps with optional React frontend. It also ships an agent skill system (`.claude/skills/loco/`) for AI-assisted development, alongside a dedicated evaluation harness for measuring code-generation quality. The repository contains two example applications (`demo`, `reference_spa`), a code generation crate (`loco-gen`), a project scaffolding crate (`loco-new`), an Astro documentation website, and an integrated eval framework. The codebase is well-structured with clean trait abstractions, extensive snapshot testing, and a clear separation between generated and hand-written model code. It is actively maintained with recent commits, responsive issue triage, and regular releases tracked in a detailed CHANGELOG.
Bamboo is a mature, well-architected Elixir library for composing and delivering emails through adapters. It provides a clean functional API for building email structs, a powerful address normalization system via the `Bamboo.Formatter` protocol, and built-in adapters for Mailgun, Mandrill, SendGrid, local in-memory storage, and testing. The library supports background delivery, email interceptors, attachments, plug-based preview of sent emails, and comprehensive test helpers. Production code is separated from optional Phoenix view integration (extracted to bamboo_phoenix). The architecture uses behaviours for adapters and delivery strategies, making it extensible. It is actively maintained, with recent commits and CI passing on Elixir 1.17-1.19.
Nette Mail is a standalone PHP library for creating and sending emails with support for SMTP, sendmail, DKIM signing, and fallback mechanisms. It provides a clean API for composing emails with HTML/text bodies, attachments, embedded images, and automatic text alternative generation. The architecture follows a modular design with separate concerns for message creation (Message/MimePart), sending (multiple Mailer implementations), signing (DkimSigner), and HTML processing (HtmlComposer, CssInliner). The library is framework-agnostic but integrates well with Nette DI and Tracy debugging tools.